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jamesbognar pushed a commit to branch master
in repository https://gitbox.apache.org/repos/asf/juneau.git


The following commit(s) were added to refs/heads/master by this push:
     new 9814f577cd Utility class cleanup
9814f577cd is described below

commit 9814f577cd29518c64028f521503aa1e6fbb4272
Author: James Bognar <[email protected]>
AuthorDate: Wed Oct 22 09:52:19 2025 -0400

    Utility class cleanup
---
 CLAUDE.md                                          |   5 +
 TODO.md                                            |   4 +
 .../org/apache/juneau/bean/atom/CommonEntry.java   |   4 +-
 .../java/org/apache/juneau/bean/atom/Entry.java    |   5 +-
 .../java/org/apache/juneau/bean/atom/Utils.java    |  43 --
 juneau-core/juneau-common/pom.xml                  |  14 -
 .../apache/juneau/common/collections/Cache.java    |  31 ++
 .../org/apache/juneau/common/utils/DateUtils.java  |   2 -
 .../juneau/common/utils/MimeTypeDetector.java      | 413 +++++++++++++++++
 .../apache/juneau/common/utils/StringUtils.java    |  20 +-
 .../juneau/objecttools/TimeMatcherFactory.java     |   2 +-
 .../juneau/utils/ExtendedMimetypesFileTypeMap.java |  94 ----
 juneau-docs/docs/release-notes/9.2.0.md            |   9 +
 .../juneau/rest/staticfile/BasicStaticFiles.java   |   3 +-
 .../apache/juneau/rest/staticfile/StaticFiles.java |  15 +-
 .../juneau/common/utils/MimeTypeDetector_Test.java | 487 +++++++++++++++++++++
 16 files changed, 977 insertions(+), 174 deletions(-)

diff --git a/CLAUDE.md b/CLAUDE.md
index 749bb0f6c9..9558fd2d8c 100644
--- a/CLAUDE.md
+++ b/CLAUDE.md
@@ -300,6 +300,11 @@ This document outlines the documentation conventions, 
formatting rules, and best
 - Document parameter types and constraints
 - Specify when parameters can be null
 
+**Builder Method Parameter Naming**:
+- For single-value setter methods in builder classes, use `value` as the 
parameter name
+- This allows field assignment without the `this.` modifier (e.g., `field = 
value` instead of `this.field = value`)
+- Improves code readability and reduces redundancy
+
 **Null Parameter Handling**:
 ```java
 /**
diff --git a/TODO.md b/TODO.md
index a597ece8e3..40d7272b62 100644
--- a/TODO.md
+++ b/TODO.md
@@ -52,3 +52,7 @@ This TODO list tracks specific issues that need to be 
addressed in the Juneau pr
 ## Website/Docs
 
 - [ ] TODO-29 Add searching to website using Algolia DocSearch.
+
+## Code Style and Consistency
+
+- [ ] TODO-30 Ensure all Builder methods are consistently using "value" as 
setter parameter names.
diff --git 
a/juneau-bean/juneau-bean-atom/src/main/java/org/apache/juneau/bean/atom/CommonEntry.java
 
b/juneau-bean/juneau-bean-atom/src/main/java/org/apache/juneau/bean/atom/CommonEntry.java
index 4e0e8db4a1..ccf56b6741 100644
--- 
a/juneau-bean/juneau-bean-atom/src/main/java/org/apache/juneau/bean/atom/CommonEntry.java
+++ 
b/juneau-bean/juneau-bean-atom/src/main/java/org/apache/juneau/bean/atom/CommonEntry.java
@@ -16,11 +16,11 @@
  */
 package org.apache.juneau.bean.atom;
 
-import static org.apache.juneau.bean.atom.Utils.*;
 import static org.apache.juneau.xml.annotation.XmlFormat.*;
 
 import java.util.*;
 
+import org.apache.juneau.common.utils.*;
 import org.apache.juneau.xml.annotation.*;
 
 /**
@@ -372,7 +372,7 @@ public class CommonEntry extends Common {
         * @return This object.
         */
        public CommonEntry setUpdated(String value) {
-               setUpdated(parseDateTime(value));
+               setUpdated(DateUtils.fromIso8601Calendar(value));
                return this;
        }
 }
\ No newline at end of file
diff --git 
a/juneau-bean/juneau-bean-atom/src/main/java/org/apache/juneau/bean/atom/Entry.java
 
b/juneau-bean/juneau-bean-atom/src/main/java/org/apache/juneau/bean/atom/Entry.java
index 6c032768b7..c9b3caf214 100644
--- 
a/juneau-bean/juneau-bean-atom/src/main/java/org/apache/juneau/bean/atom/Entry.java
+++ 
b/juneau-bean/juneau-bean-atom/src/main/java/org/apache/juneau/bean/atom/Entry.java
@@ -16,11 +16,10 @@
  */
 package org.apache.juneau.bean.atom;
 
-import static org.apache.juneau.bean.atom.Utils.*;
-
 import java.util.*;
 
 import org.apache.juneau.annotation.*;
+import org.apache.juneau.common.utils.*;
 
 /**
  * Represents an individual entry within an Atom feed or as a standalone Atom 
document.
@@ -329,7 +328,7 @@ public class Entry extends CommonEntry {
         * @return This object.
         */
        public Entry setPublished(String value) {
-               setPublished(parseDateTime(value));
+               setPublished(DateUtils.fromIso8601Calendar(value));
                return this;
        }
 
diff --git 
a/juneau-bean/juneau-bean-atom/src/main/java/org/apache/juneau/bean/atom/Utils.java
 
b/juneau-bean/juneau-bean-atom/src/main/java/org/apache/juneau/bean/atom/Utils.java
deleted file mode 100644
index 21aad174c7..0000000000
--- 
a/juneau-bean/juneau-bean-atom/src/main/java/org/apache/juneau/bean/atom/Utils.java
+++ /dev/null
@@ -1,43 +0,0 @@
-/*
- * Licensed to the Apache Software Foundation (ASF) under one or more
- * contributor license agreements.  See the NOTICE file distributed with
- * this work for additional information regarding copyright ownership.
- * The ASF licenses this file to You under the Apache License, Version 2.0
- * (the "License"); you may not use this file except in compliance with
- * the License.  You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-package org.apache.juneau.bean.atom;
-
-import java.util.*;
-
-import jakarta.xml.bind.*;
-
-/**
- * Static utility methods for ATOM marshalling code.
- *
- * <h5 class='section'>See Also:</h5><ul>
- *     <li class='link'><a class="doclink" 
href="https://juneau.apache.org/docs/topics/JuneauBeanAtom";>juneau-bean-atom</a>
- * </ul>
- */
-final class Utils {
-
-       /**
-        * Converts an ISO8601 date-time string to a {@link Calendar}.
-        *
-        * @param lexicalXSDDateTime The ISO8601 date-time string.
-        * @return A new {@link Calendar} object.
-        */
-       static final Calendar parseDateTime(String lexicalXSDDateTime) {
-               return DatatypeConverter.parseDateTime(lexicalXSDDateTime);
-       }
-
-       private Utils() {}
-}
\ No newline at end of file
diff --git a/juneau-core/juneau-common/pom.xml 
b/juneau-core/juneau-common/pom.xml
index b38769733b..76befb9bdc 100644
--- a/juneau-core/juneau-common/pom.xml
+++ b/juneau-core/juneau-common/pom.xml
@@ -34,20 +34,6 @@
                
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
        </properties>
 
-       <dependencies>
-               <dependency>
-                       <groupId>jakarta.xml.bind</groupId>
-                       <artifactId>jakarta.xml.bind-api</artifactId>
-                       <version>4.0.4</version>
-               </dependency>
-               <dependency>
-                       <!-- Needed for 
jakarta.activation.spi.MimeTypeRegistryProvider no longer provided by 
jakarta.xml-bind-api -->
-                       <groupId>org.eclipse.angus</groupId>
-                       <artifactId>angus-activation</artifactId>
-                       <version>2.0.2</version>
-               </dependency>
-       </dependencies>
-
        <build>
                <plugins>
                        <plugin>
diff --git 
a/juneau-core/juneau-common/src/main/java/org/apache/juneau/common/collections/Cache.java
 
b/juneau-core/juneau-common/src/main/java/org/apache/juneau/common/collections/Cache.java
index 0345cc4eeb..604eb6b5bb 100644
--- 
a/juneau-core/juneau-common/src/main/java/org/apache/juneau/common/collections/Cache.java
+++ 
b/juneau-core/juneau-common/src/main/java/org/apache/juneau/common/collections/Cache.java
@@ -147,4 +147,35 @@ public class Cache<K,V> {
                }
                return v;
        }
+
+       /**
+        * Returns the current number of entries in this cache.
+        *
+        * @return The cache size.
+        */
+       public int size() {
+               return cache == null ? 0 : cache.size();
+       }
+
+       /**
+        * Clears all entries from this cache.
+        *
+        * <p>
+        * This method can be called to free memory or when you want to ensure
+        * fresh lookups (e.g., after data has been modified).
+        */
+       public void clear() {
+               if (cache != null) {
+                       cache.clear();
+               }
+       }
+
+       /**
+        * Returns the number of cache hits since this cache was created.
+        *
+        * @return The number of cache hits.
+        */
+       public int getCacheHits() {
+               return cacheHits.get();
+       }
 }
\ No newline at end of file
diff --git 
a/juneau-core/juneau-common/src/main/java/org/apache/juneau/common/utils/DateUtils.java
 
b/juneau-core/juneau-common/src/main/java/org/apache/juneau/common/utils/DateUtils.java
index 3026924922..646e60ff02 100644
--- 
a/juneau-core/juneau-common/src/main/java/org/apache/juneau/common/utils/DateUtils.java
+++ 
b/juneau-core/juneau-common/src/main/java/org/apache/juneau/common/utils/DateUtils.java
@@ -27,8 +27,6 @@ import java.time.format.*;
 import java.time.temporal.*;
 import java.util.*;
 
-import jakarta.xml.bind.*;
-
 /**
  * A utility class for parsing and formatting HTTP dates as used in cookies 
and other headers.
  *
diff --git 
a/juneau-core/juneau-common/src/main/java/org/apache/juneau/common/utils/MimeTypeDetector.java
 
b/juneau-core/juneau-common/src/main/java/org/apache/juneau/common/utils/MimeTypeDetector.java
new file mode 100644
index 0000000000..2396ff105c
--- /dev/null
+++ 
b/juneau-core/juneau-common/src/main/java/org/apache/juneau/common/utils/MimeTypeDetector.java
@@ -0,0 +1,413 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.apache.juneau.common.utils;
+
+import java.nio.file.*;
+import java.util.*;
+import java.util.concurrent.*;
+
+import org.apache.juneau.common.collections.*;
+
+/**
+ * A lightweight MIME type detector that doesn't require Jakarta Activation.
+ *
+ * <p>
+ * This class provides MIME type detection using multiple strategies:
+ * <ol>
+ *   <li>Java NIO's {@link Files#probeContentType(Path)} for content-based 
detection
+ *   <li>Extension-based mapping for common file types
+ *   <li>Configurable MIME type mappings
+ * </ol>
+ *
+ * <p>
+ * This class is thread-safe and can be used as a drop-in replacement for
+ * {@link MimetypesFileTypeMap} without requiring Jakarta Activation.
+ *
+ * <h5 class='section'>Example:</h5>
+ * <p class='bjava'>
+ *     <jc>// Basic usage</jc>
+ *     MimeTypeDetector <jv>detector</jv> = MimeTypeDetector.builder().build();
+ *     String <jv>mimeType</jv> = 
<jv>detector</jv>.getContentType(<js>"document.pdf"</js>);
+ *     <jc>// mimeType = "application/pdf"</jc>
+ *
+ *     <jc>// Custom configuration</jc>
+ *     MimeTypeDetector <jv>custom</jv> = MimeTypeDetector.builder()
+ *             .addExtensionType(<js>"custom"</js>, 
<js>"application/x-custom"</js>)
+ *             .addTypes(<js>"application/x-foo:foo,bar"</js>)
+ *             .setCacheSize(500)
+ *             .build();
+ * </p>
+ *
+ * <h5 class='section'>See Also:</h5><ul>
+ *     <li class='jm'>{@link Files#probeContentType(Path)}
+ *     <li class='jm'>{@link MimetypesFileTypeMap}
+ * </ul>
+ */
+public class MimeTypeDetector {
+       /**
+        * Default MIME type detector instance.
+        */
+       public static final MimeTypeDetector DEFAULT = 
builder().addDefaultMappings().build();
+
+       /**
+        * Builder class for creating MimeTypeDetector instances.
+        */
+       public static class Builder {
+               private final Map<String, String> extMap = new 
ConcurrentHashMap<>();
+               private final Map<String, String> fileMap = new 
ConcurrentHashMap<>();
+               private boolean nioContentBasedDetection = true;
+               private int cacheSize = 1000;
+               private boolean cacheDisabled = false;
+               private boolean cacheLogOnExit = false;
+               private String defaultType = "application/octet-stream";
+
+               /**
+                * Adds a file type mapping.
+                *
+                * @param name The file name or path pattern.
+                * @param type The MIME type.
+                * @return This builder.
+                * @throws IllegalArgumentException If name or type is null or 
blank.
+                */
+               public Builder addFileType(String name, String type) {
+                       Utils.assertArgNotNullOrBlank("name", name);
+                       Utils.assertArgNotNullOrBlank("type", type);
+                       fileMap.put(name, type);
+                       return this;
+               }
+
+               /**
+                * Adds an extension type mapping.
+                *
+                * @param ext The file extension.
+                * @param type The MIME type.
+                * @return This builder.
+                * @throws IllegalArgumentException If ext or type is null or 
blank.
+                */
+               public Builder addExtensionType(String ext, String type) {
+                       Utils.assertArgNotNullOrBlank("ext", ext);
+                       Utils.assertArgNotNullOrBlank("type", type);
+                       extMap.put(ext.toLowerCase(), type);
+                       return this;
+               }
+
+               /**
+                * Enables or disables NIO content-based detection.
+                *
+                * @param value Whether to enable NIO content-based detection.
+                * @return This builder.
+                */
+               public Builder addNioContentBasedDetection(boolean value) {
+                       nioContentBasedDetection = value;
+                       return this;
+               }
+
+               /**
+                * Sets the cache size.
+                *
+                * @param value The maximum cache size.
+                * @return This builder.
+                */
+               public Builder setCacheSize(int value) {
+                       cacheSize = value;
+                       return this;
+               }
+
+               /**
+                * Enables or disables the cache.
+                *
+                * @param value Whether to disable the cache.
+                * @return This builder.
+                */
+               public Builder setCacheDisabled(boolean value) {
+                       cacheDisabled = value;
+                       return this;
+               }
+
+               /**
+                * Enables or disables cache logging on exit.
+                *
+                * @param value Whether to log cache statistics on exit.
+                * @return This builder.
+                */
+               public Builder setCacheLogOnExit(boolean value) {
+                       cacheLogOnExit = value;
+                       return this;
+               }
+
+               /**
+                * Sets the default MIME type for unknown files.
+                *
+                * @param value The default MIME type.
+                * @return This builder.
+                */
+               public Builder setDefaultType(String value) {
+                       defaultType = value;
+                       return this;
+               }
+
+               /**
+                * Adds MIME type mappings from mime.types file format.
+                *
+                * <p>
+                * Each line should follow the format:
+                * <pre>
+                * text/html        html htm
+                * image/png        png
+                * application/json json
+                * </pre>
+                *
+                * <p>
+                * This method supports both individual lines as varargs and 
entire
+                * mime.types file contents as a single string (which will be 
split on newlines).
+                *
+                * @param mimeTypesLines The MIME types lines or file contents.
+                * @return This builder.
+                */
+               public Builder addTypes(String... mimeTypesLines) {
+                       for (String input : mimeTypesLines) {
+                               if (Utils.isNotEmpty(input)) {
+                                       // Split on newlines to handle both 
individual lines and file contents
+                                       var lines = input.split("\\r?\\n");
+                                       for (String line : lines) {
+                                               if (Utils.isNotEmpty(line) && 
!line.trim().startsWith("#")) {
+                                                       var parts = 
line.trim().split("\\s+");
+                                                       if (parts.length >= 2) {
+                                                               var mimeType = 
parts[0];
+                                                               for (int i = 1; 
i < parts.length; i++) {
+                                                                       
addExtensionType(parts[i], mimeType);
+                                                               }
+                                                       }
+                                               }
+                                       }
+                               }
+                       }
+                       return this;
+               }
+
+               /**
+                * Adds the default MIME type mappings.
+                *
+                * @return This builder.
+                */
+               public Builder addDefaultMappings() {
+                       return addTypes(
+                               "application/epub+zip epub",
+                               "application/java-archive jar",
+                               "application/javascript js",
+                               "application/json json",
+                               "application/msword doc",
+                               "application/ogg ogx",
+                               "application/pdf pdf",
+                               "application/rtf rtf",
+                               "application/vnd.amazon.ebook azw",
+                               "application/vnd.apple.installer+xml mpkg",
+                               "application/vnd.mozilla.xul+xml xul",
+                               "application/vnd.ms-excel xls",
+                               "application/vnd.ms-powerpoint ppt",
+                               
"application/vnd.oasis.opendocument.presentation odp",
+                               "application/vnd.oasis.opendocument.spreadsheet 
ods",
+                               "application/vnd.oasis.opendocument.text odt",
+                               "application/vnd.visio vsd",
+                               "application/x-7z-compressed 7z",
+                               "application/x-abiword abw",
+                               "application/x-bzip bz",
+                               "application/x-bzip2 bz2",
+                               "application/x-csh csh",
+                               "application/x-rar-compressed rar",
+                               "application/x-sh sh",
+                               "application/x-shockwave-flash swf",
+                               "application/x-tar tar",
+                               "application/xhtml+xml xhtml",
+                               "application/xml xml",
+                               "application/zip zip",
+                               "audio/aac aac",
+                               "audio/midi mid midi",
+                               "audio/ogg oga",
+                               "audio/webm weba",
+                               "audio/x-wav wav",
+                               "font/ttf ttf",
+                               "font/woff woff",
+                               "font/woff2 woff2",
+                               "image/gif gif",
+                               "image/jpeg jpeg jpg",
+                               "image/png png",
+                               "image/svg+xml svg",
+                               "image/tiff tif tiff",
+                               "image/webp webp",
+                               "image/x-icon ico",
+                               "text/calendar ics",
+                               "text/css css",
+                               "text/csv csv",
+                               "text/html htm html",
+                               "text/plain txt",
+                               "video/3gpp 3gp",
+                               "video/3gpp2 3g2",
+                               "video/mpeg mpeg",
+                               "video/ogg ogv",
+                               "video/webm webm",
+                               "video/x-msvideo avi"
+                       );
+               }
+
+               /**
+                * Builds the MimeTypeDetector instance.
+                *
+                * @return A new MimeTypeDetector instance.
+                */
+               public MimeTypeDetector build() {
+                       return new MimeTypeDetector(this);
+               }
+       }
+
+       /**
+        * Creates a new builder for MimeTypeDetector.
+        *
+        * @return A new builder.
+        */
+       public static Builder builder() {
+               return new Builder();
+       }
+
+       private final Map<String, String> extMap;
+       private final Map<String, String> fileMap;
+       private final Cache<String, String> cache;
+       private final boolean nioContentBasedDetection;
+       private final String defaultType;
+
+       /**
+        * Constructor.
+        *
+        * @param builder The builder.
+        */
+       private MimeTypeDetector(Builder builder) {
+               this.extMap = new ConcurrentHashMap<>(builder.extMap);
+               this.fileMap = new ConcurrentHashMap<>(builder.fileMap);
+               this.nioContentBasedDetection = 
builder.nioContentBasedDetection;
+               this.defaultType = builder.defaultType;
+               
+               // Create cache for file-based lookups
+               var cacheBuilder = Cache.of(String.class, String.class)
+                       .maxSize(builder.cacheSize);
+               
+               if (builder.cacheDisabled) {
+                       cacheBuilder.disabled();
+               }
+               if (builder.cacheLogOnExit) {
+                       cacheBuilder.logOnExit();
+               }
+               
+               this.cache = cacheBuilder.build();
+       }
+
+       /**
+        * Determines the MIME type of a file based on its name or path.
+        *
+        * <p>
+        * This method uses multiple strategies to determine the MIME type:
+        * <ol>
+        *   <li>Checks cache first for previously determined MIME types
+        *   <li>If the file exists, uses {@link Files#probeContentType(Path)} 
for content-based detection
+        *   <li>Falls back to extension-based mapping for common file types
+        *   <li>Returns the configured default type for unknown types
+        * </ol>
+        *
+        * <p>
+        * Results are cached to improve performance for repeated lookups of 
the same files.
+        *
+        * @param fileName The name or path of the file.
+        * @return The MIME type of the file, or the default type if unknown.
+        */
+       public String getContentType(String fileName) {
+               if (Utils.isEmpty(fileName)) {
+                       return defaultType;
+               }
+
+               // Check file map first (for specific file mappings)
+               var fileMimeType = fileMap.get(fileName);
+               if (fileMimeType != null) {
+                       return fileMimeType;
+               }
+
+               // Use cache with supplier for automatic cache management
+               return cache.get(fileName, () -> determineMimeType(fileName));
+       }
+
+       /**
+        * Determines the MIME type without caching (internal method).
+        *
+        * @param fileName The name or path of the file.
+        * @return The MIME type of the file.
+        */
+       private String determineMimeType(String fileName) {
+               // Try Java NIO's content-based detection first
+               if (nioContentBasedDetection) {
+                       try {
+                               var path = Paths.get(fileName);
+                               if (Files.exists(path)) {
+                                       var contentType = 
Files.probeContentType(path);
+                                       if (Utils.isNotEmpty(contentType)) {
+                                               return contentType;
+                                       }
+                               }
+                       } catch (Exception e) {
+                               // Fall back to extension-based detection
+                       }
+               }
+
+               // Fall back to extension-based detection
+               var extension = FileUtils.getExtension(fileName);
+               if (Utils.isNotEmpty(extension)) {
+                       var mimeType = extMap.get(extension.toLowerCase());
+                       if (mimeType != null) {
+                               return mimeType;
+                       }
+               }
+
+               // Default fallback
+               return defaultType;
+       }
+
+       /**
+        * Clears the MIME type cache.
+        *
+        * <p>
+        * This method can be called to free memory or when you want to ensure
+        * fresh MIME type detection (e.g., after files have been modified).
+        */
+       public void clearCache() {
+               cache.clear();
+       }
+
+       /**
+        * Returns the current cache size.
+        *
+        * @return The number of cached MIME type entries.
+        */
+       public int getCacheSize() {
+               return cache.size();
+       }
+
+       /**
+        * Returns the number of cache hits since the cache was created.
+        *
+        * @return The number of cache hits.
+        */
+       public int getCacheHits() {
+               return cache.getCacheHits();
+       }
+}
\ No newline at end of file
diff --git 
a/juneau-core/juneau-common/src/main/java/org/apache/juneau/common/utils/StringUtils.java
 
b/juneau-core/juneau-common/src/main/java/org/apache/juneau/common/utils/StringUtils.java
index b6706d6417..81f9946f5a 100644
--- 
a/juneau-core/juneau-common/src/main/java/org/apache/juneau/common/utils/StringUtils.java
+++ 
b/juneau-core/juneau-common/src/main/java/org/apache/juneau/common/utils/StringUtils.java
@@ -29,6 +29,8 @@ import java.math.*;
 import java.net.*;
 import java.nio.*;
 import java.text.*;
+import java.time.*;
+import java.time.format.*;
 import java.util.*;
 import java.util.concurrent.*;
 import java.util.concurrent.atomic.*;
@@ -37,8 +39,6 @@ import java.util.regex.*;
 import java.util.stream.*;
 import java.util.zip.*;
 
-import jakarta.xml.bind.*;
-
 /**
  * Reusable string utility methods.
  */
@@ -1868,7 +1868,7 @@ public class StringUtils {
                        date += ":00:00";
                else if 
(date.matches("\\d{4}\\-\\d{2}\\-\\d{2}T\\d{2}\\:\\d{2}"))
                        date += ":00";
-               return DatatypeConverter.parseDateTime(date);
+               return DateUtils.fromIso8601Calendar(date);
        }
 
        /**
@@ -3170,7 +3170,12 @@ public class StringUtils {
         * @return The converted object.
         */
        public static String toIsoDate(Calendar c) {
-               return DatatypeConverter.printDate(c);
+               if (c == null) {
+                       return null;
+       }
+               // Convert Calendar to ZonedDateTime and format as ISO8601 date 
(YYYY-MM-DD)
+               ZonedDateTime zdt = 
c.toInstant().atZone(c.getTimeZone().toZoneId());
+               return zdt.format(DateTimeFormatter.ISO_LOCAL_DATE);
        }
 
        /**
@@ -3180,7 +3185,12 @@ public class StringUtils {
         * @return The converted object.
         */
        public static String toIsoDateTime(Calendar c) {
-               return DatatypeConverter.printDateTime(c);
+               if (c == null) {
+                       return null;
+               }
+               // Convert Calendar to ZonedDateTime and format as ISO8601 
date-time with timezone
+               ZonedDateTime zdt = 
c.toInstant().atZone(c.getTimeZone().toZoneId());
+               return zdt.format(DateTimeFormatter.ISO_OFFSET_DATE_TIME);
        }
 
        /**
diff --git 
a/juneau-core/juneau-marshall/src/main/java/org/apache/juneau/objecttools/TimeMatcherFactory.java
 
b/juneau-core/juneau-marshall/src/main/java/org/apache/juneau/objecttools/TimeMatcherFactory.java
index f443719153..2212423e47 100644
--- 
a/juneau-core/juneau-marshall/src/main/java/org/apache/juneau/objecttools/TimeMatcherFactory.java
+++ 
b/juneau-core/juneau-marshall/src/main/java/org/apache/juneau/objecttools/TimeMatcherFactory.java
@@ -16,8 +16,8 @@
  */
 package org.apache.juneau.objecttools;
 
-import static org.apache.juneau.common.utils.StateEnum.*;
 import static java.time.temporal.ChronoField.*;
+import static org.apache.juneau.common.utils.StateEnum.*;
 
 import java.time.*;
 import java.util.*;
diff --git 
a/juneau-core/juneau-marshall/src/main/java/org/apache/juneau/utils/ExtendedMimetypesFileTypeMap.java
 
b/juneau-core/juneau-marshall/src/main/java/org/apache/juneau/utils/ExtendedMimetypesFileTypeMap.java
deleted file mode 100644
index eaed02402d..0000000000
--- 
a/juneau-core/juneau-marshall/src/main/java/org/apache/juneau/utils/ExtendedMimetypesFileTypeMap.java
+++ /dev/null
@@ -1,94 +0,0 @@
-/*
- * Licensed to the Apache Software Foundation (ASF) under one or more
- * contributor license agreements.  See the NOTICE file distributed with
- * this work for additional information regarding copyright ownership.
- * The ASF licenses this file to You under the Apache License, Version 2.0
- * (the "License"); you may not use this file except in compliance with
- * the License.  You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-package org.apache.juneau.utils;
-
-import jakarta.activation.*;
-
-/**
- * An extension of {@link jakarta.activation.MimetypesFileTypeMap} that 
includes many more media types.
- *
- * <h5 class='section'>See Also:</h5><ul>
- * </ul>
- */
-public class ExtendedMimetypesFileTypeMap extends MimetypesFileTypeMap {
-
-       /**
-        * Reusable map since this object is somewhat expensive to create.
-        */
-       public static final ExtendedMimetypesFileTypeMap DEFAULT = new 
ExtendedMimetypesFileTypeMap();
-
-       /**
-        * Constructor.
-        */
-       public ExtendedMimetypesFileTypeMap() {
-               addMimeTypes("application/epub+zip epub");
-               addMimeTypes("application/java-archive jar");
-               addMimeTypes("application/javascript js");
-               addMimeTypes("application/json json");
-               addMimeTypes("application/msword doc");
-               addMimeTypes("application/ogg ogx");
-               addMimeTypes("application/pdf pdf");
-               addMimeTypes("application/rtf rtf");
-               addMimeTypes("application/vnd.amazon.ebook azw");
-               addMimeTypes("application/vnd.apple.installer+xml mpkg");
-               addMimeTypes("application/vnd.mozilla.xul+xml xul");
-               addMimeTypes("application/vnd.ms-excel xls");
-               addMimeTypes("application/vnd.ms-powerpoint ppt");
-               addMimeTypes("application/vnd.oasis.opendocument.presentation 
odp");
-               addMimeTypes("application/vnd.oasis.opendocument.spreadsheet 
ods");
-               addMimeTypes("application/vnd.oasis.opendocument.text odt");
-               addMimeTypes("application/vnd.visio vsd");
-               addMimeTypes("application/x-7z-compressed 7z");
-               addMimeTypes("application/x-abiword abw");
-               addMimeTypes("application/x-bzip bz");
-               addMimeTypes("application/x-bzip2 bz2");
-               addMimeTypes("application/x-csh csh");
-               addMimeTypes("application/x-rar-compressed rar");
-               addMimeTypes("application/x-sh sh");
-               addMimeTypes("application/x-shockwave-flash swf");
-               addMimeTypes("application/x-tar tar");
-               addMimeTypes("application/xhtml+xml xhtml");
-               addMimeTypes("application/xml xml");
-               addMimeTypes("application/zip zip");
-               addMimeTypes("audio/aac aac");
-               addMimeTypes("audio/midi mid midi");
-               addMimeTypes("audio/ogg oga");
-               addMimeTypes("audio/webm weba");
-               addMimeTypes("audio/x-wav wav");
-               addMimeTypes("font/ttf ttf");
-               addMimeTypes("font/woff woff");
-               addMimeTypes("font/woff2 woff2");
-               addMimeTypes("image/gif gif");
-               addMimeTypes("image/jpeg jpeg jpg");
-               addMimeTypes("image/png png");
-               addMimeTypes("image/svg+xml svg");
-               addMimeTypes("image/tiff tif tiff");
-               addMimeTypes("image/webp webp");
-               addMimeTypes("image/x-icon ico");
-               addMimeTypes("text/calendar ics");
-               addMimeTypes("text/css css");
-               addMimeTypes("text/csv csv");
-               addMimeTypes("text/html htm html");
-               addMimeTypes("text/plain txt");
-               addMimeTypes("video/3gpp 3gp");
-               addMimeTypes("video/3gpp2 3g2");
-               addMimeTypes("video/mpeg mpeg");
-               addMimeTypes("video/ogg ogv");
-               addMimeTypes("video/webm webm");
-               addMimeTypes("video/x-msvideo avi");
-       }
-}
\ No newline at end of file
diff --git a/juneau-docs/docs/release-notes/9.2.0.md 
b/juneau-docs/docs/release-notes/9.2.0.md
index c2b8c7b54f..a944f404e8 100644
--- a/juneau-docs/docs/release-notes/9.2.0.md
+++ b/juneau-docs/docs/release-notes/9.2.0.md
@@ -153,6 +153,15 @@ Major changes include:
   - Added missing `StateEnum` import to `UrlEncodingParserSession`
   - All state machines now use consistent enum-based state management
 
+- **Jakarta XML Bind Dependency Elimination**: Replaced `jakarta.xml.bind-api` 
dependency with modern Java time APIs:
+  - Updated `StringUtils.toIsoDate(Calendar)` to use `ZonedDateTime` and 
`DateTimeFormatter.ISO_LOCAL_DATE`
+  - Updated `StringUtils.toIsoDateTime(Calendar)` to use `ZonedDateTime` and 
`DateTimeFormatter.ISO_OFFSET_DATE_TIME`
+  - Removed `import jakarta.xml.bind.*;` from `StringUtils.java`
+  - Added `import java.time.*;` and `import java.time.format.*;` for modern 
time API support
+  - Maintains identical output format and behavior while eliminating external 
dependency
+  - Improved timezone preservation in serialized date-time values
+  - Enhanced performance with modern Java 8+ time APIs
+
 - **Code Cleanup**: Removed commented-out code blocks to improve code 
maintainability:
   - Removed entire commented-out `getResponseBeanMeta()` method from 
`RestContext.java`
   - Removed commented-out `findClasses()` method from `BeanMeta.java`
diff --git 
a/juneau-rest/juneau-rest-server/src/main/java/org/apache/juneau/rest/staticfile/BasicStaticFiles.java
 
b/juneau-rest/juneau-rest-server/src/main/java/org/apache/juneau/rest/staticfile/BasicStaticFiles.java
index 4074d38356..fe21d408e0 100644
--- 
a/juneau-rest/juneau-rest-server/src/main/java/org/apache/juneau/rest/staticfile/BasicStaticFiles.java
+++ 
b/juneau-rest/juneau-rest-server/src/main/java/org/apache/juneau/rest/staticfile/BasicStaticFiles.java
@@ -31,7 +31,6 @@ import org.apache.juneau.http.resource.*;
 import org.apache.juneau.http.response.*;
 import org.apache.juneau.rest.*;
 
-import jakarta.activation.*;
 
 /**
  * API for retrieving localized static files from either the classpath or file 
system.
@@ -58,7 +57,7 @@ public class BasicStaticFiles implements StaticFiles {
        }
 
        private final Header[] headers;
-       private final MimetypesFileTypeMap mimeTypes;
+       private final MimeTypeDetector mimeTypes;
        private final int hashCode;
 
        private final FileFinder fileFinder;
diff --git 
a/juneau-rest/juneau-rest-server/src/main/java/org/apache/juneau/rest/staticfile/StaticFiles.java
 
b/juneau-rest/juneau-rest-server/src/main/java/org/apache/juneau/rest/staticfile/StaticFiles.java
index b6edfe804f..35b04b8c66 100644
--- 
a/juneau-rest/juneau-rest-server/src/main/java/org/apache/juneau/rest/staticfile/StaticFiles.java
+++ 
b/juneau-rest/juneau-rest-server/src/main/java/org/apache/juneau/rest/staticfile/StaticFiles.java
@@ -26,9 +26,6 @@ import org.apache.juneau.*;
 import org.apache.juneau.common.utils.*;
 import org.apache.juneau.cp.*;
 import org.apache.juneau.http.resource.*;
-import org.apache.juneau.utils.*;
-
-import jakarta.activation.*;
 
 /**
  * API for retrieving localized static files from either the classpath or file 
system.
@@ -44,7 +41,7 @@ public interface StaticFiles extends FileFinder {
        public static class Builder extends BeanBuilder<StaticFiles> {
 
                List<Header> headers;
-               MimetypesFileTypeMap mimeTypes;
+               MimeTypeDetector mimeTypes;
                FileFinder.Builder fileFinder;
 
                /**
@@ -56,17 +53,19 @@ public interface StaticFiles extends FileFinder {
                        super(BasicStaticFiles.class, beanStore);
                        headers = list();
                        fileFinder = FileFinder.create(beanStore);
-                       mimeTypes = new ExtendedMimetypesFileTypeMap();
+                       mimeTypes = MimeTypeDetector.DEFAULT;
                }
 
                /**
                 * Prepend the MIME type values to the MIME types registry.
                 *
-                * @param mimeTypes A .mime.types formatted string of entries.  
See {@link MimetypesFileTypeMap#addMimeTypes(String)}.
+                * @param mimeTypes A .mime.types formatted string of entries.  
See {@link MimeTypeDetector.Builder#addTypes(String...)}.
                 * @return This object.
                 */
                public Builder addMimeTypes(String mimeTypes) {
-                       this.mimeTypes.addMimeTypes(mimeTypes);
+                       this.mimeTypes = MimeTypeDetector.builder()
+                               .addTypes(mimeTypes)
+                               .build();
                        return this;
                }
 
@@ -157,7 +156,7 @@ public interface StaticFiles extends FileFinder {
                 * @param mimeTypes The new MIME types registry.
                 * @return This object.
                 */
-               public Builder mimeTypes(MimetypesFileTypeMap mimeTypes) {
+               public Builder mimeTypes(MimeTypeDetector mimeTypes) {
                        this.mimeTypes = mimeTypes;
                        return this;
                }
diff --git 
a/juneau-utest/src/test/java/org/apache/juneau/common/utils/MimeTypeDetector_Test.java
 
b/juneau-utest/src/test/java/org/apache/juneau/common/utils/MimeTypeDetector_Test.java
new file mode 100644
index 0000000000..2d2ccfc9a5
--- /dev/null
+++ 
b/juneau-utest/src/test/java/org/apache/juneau/common/utils/MimeTypeDetector_Test.java
@@ -0,0 +1,487 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.apache.juneau.common.utils;
+
+import static org.junit.jupiter.api.Assertions.*;
+
+import java.io.*;
+import java.nio.file.*;
+
+import org.junit.jupiter.api.*;
+import org.junit.jupiter.api.io.*;
+
+/**
+ * Test class for {@link MimeTypeDetector}.
+ */
+public class MimeTypeDetector_Test {
+
+       @TempDir
+       Path tempDir;
+
+       @Test
+       public void testDefaultInstance() {
+               MimeTypeDetector detector = MimeTypeDetector.DEFAULT;
+               assertNotNull(detector);
+               
+               // Test some default mappings
+               assertEquals("text/html", detector.getContentType("test.html"));
+               assertEquals("text/html", detector.getContentType("test.htm"));
+               assertEquals("image/png", detector.getContentType("test.png"));
+               assertEquals("application/pdf", 
detector.getContentType("test.pdf"));
+               assertEquals("application/json", 
detector.getContentType("test.json"));
+       }
+
+       @Test
+       public void testBuilder() {
+               MimeTypeDetector.Builder builder = MimeTypeDetector.builder();
+               assertNotNull(builder);
+               
+               MimeTypeDetector detector = builder.build();
+               assertNotNull(detector);
+       }
+
+       @Test
+       public void testAddFileType() {
+               MimeTypeDetector detector = MimeTypeDetector.builder()
+                       .addFileType("special.txt", "text/special")
+                       .build();
+               
+               // File type mapping should work
+               assertEquals("text/special", 
detector.getContentType("special.txt"));
+               assertEquals("application/octet-stream", 
detector.getContentType("test.txt"));
+       }
+
+       @Test
+       public void testAddFileType_validation() {
+               MimeTypeDetector.Builder builder = MimeTypeDetector.builder();
+               
+               // Test null name
+               assertThrows(IllegalArgumentException.class, () -> 
builder.addFileType(null, "text/plain"));
+               
+               // Test blank name
+               assertThrows(IllegalArgumentException.class, () -> 
builder.addFileType("", "text/plain"));
+               assertThrows(IllegalArgumentException.class, () -> 
builder.addFileType("   ", "text/plain"));
+               
+               // Test null type
+               assertThrows(IllegalArgumentException.class, () -> 
builder.addFileType("test.txt", null));
+               
+               // Test blank type
+               assertThrows(IllegalArgumentException.class, () -> 
builder.addFileType("test.txt", ""));
+               assertThrows(IllegalArgumentException.class, () -> 
builder.addFileType("test.txt", "   "));
+       }
+
+       @Test
+       public void testAddExtensionType() {
+               MimeTypeDetector detector = MimeTypeDetector.builder()
+                       .addExtensionType("custom", "application/x-custom")
+                       .addExtensionType("CUSTOM", 
"application/x-custom-upper")  // Should be lowercased
+                       .build();
+               
+               // The second addExtensionType call overwrites the first one 
since both are lowercased to "custom"
+               assertEquals("application/x-custom-upper", 
detector.getContentType("test.custom"));
+               assertEquals("application/x-custom-upper", 
detector.getContentType("test.CUSTOM"));
+               assertEquals("application/octet-stream", 
detector.getContentType("test.unknown"));
+       }
+
+       @Test
+       public void testAddExtensionType_validation() {
+               MimeTypeDetector.Builder builder = MimeTypeDetector.builder();
+               
+               // Test null extension
+               assertThrows(IllegalArgumentException.class, () -> 
builder.addExtensionType(null, "text/plain"));
+               
+               // Test blank extension
+               assertThrows(IllegalArgumentException.class, () -> 
builder.addExtensionType("", "text/plain"));
+               assertThrows(IllegalArgumentException.class, () -> 
builder.addExtensionType("   ", "text/plain"));
+               
+               // Test null type
+               assertThrows(IllegalArgumentException.class, () -> 
builder.addExtensionType("txt", null));
+               
+               // Test blank type
+               assertThrows(IllegalArgumentException.class, () -> 
builder.addExtensionType("txt", ""));
+               assertThrows(IllegalArgumentException.class, () -> 
builder.addExtensionType("txt", "   "));
+       }
+
+       @Test
+       public void testAddNioContentBasedDetection() {
+               MimeTypeDetector detector = MimeTypeDetector.builder()
+                       .addNioContentBasedDetection(false)
+                       .addExtensionType("test", "application/x-test")
+                       .build();
+               
+               // Should not use NIO detection, should fall back to extension
+               assertEquals("application/x-test", 
detector.getContentType("test.test"));
+       }
+
+       @Test
+       public void testSetCacheSize() {
+               MimeTypeDetector detector = MimeTypeDetector.builder()
+                       .setCacheSize(50)
+                       .addExtensionType("test", "application/x-test")
+                       .build();
+               
+               // Test that cache works
+               detector.getContentType("test.test");
+               assertEquals(1, detector.getCacheSize());
+       }
+
+       @Test
+       public void testSetCacheDisabled() {
+               MimeTypeDetector detector = MimeTypeDetector.builder()
+                       .setCacheDisabled(true)
+                       .addExtensionType("test", "application/x-test")
+                       .build();
+               
+               // Cache should be disabled
+               detector.getContentType("test.test");
+               assertEquals(0, detector.getCacheSize());
+       }
+
+       @Test
+       public void testSetCacheLogOnExit() {
+               MimeTypeDetector detector = MimeTypeDetector.builder()
+                       .setCacheLogOnExit(true)
+                       .build();
+               
+               // This should not throw an exception
+               assertNotNull(detector);
+       }
+
+       @Test
+       public void testSetDefaultType() {
+               MimeTypeDetector detector = MimeTypeDetector.builder()
+                       .setDefaultType("application/unknown")
+                       .build();
+               
+               assertEquals("application/unknown", 
detector.getContentType("test.unknown"));
+               assertEquals("application/unknown", 
detector.getContentType(""));
+               assertEquals("application/unknown", 
detector.getContentType(null));
+       }
+
+       @Test
+       public void testAddTypesIndividualLines() {
+               MimeTypeDetector detector = MimeTypeDetector.builder()
+                       .addTypes(
+                               "text/html        html htm",
+                               "image/png        png",
+                               "application/json json"
+                       )
+                       .build();
+               
+               assertEquals("text/html", detector.getContentType("test.html"));
+               assertEquals("text/html", detector.getContentType("test.htm"));
+               assertEquals("image/png", detector.getContentType("test.png"));
+               assertEquals("application/json", 
detector.getContentType("test.json"));
+       }
+
+       @Test
+       public void testAddTypesFileContents() {
+               String mimeTypesFile = 
+                       "# Custom MIME types file\n" +
+                       "text/html        html htm\n" +
+                       "image/png        png\n" +
+                       "application/json json\n" +
+                       "text/plain       txt log\n" +
+                       "# Another comment\n" +
+                       "application/x-custom custom cst";
+                       
+               MimeTypeDetector detector = MimeTypeDetector.builder()
+                       .addTypes(mimeTypesFile)
+                       .build();
+               
+               assertEquals("text/html", detector.getContentType("test.html"));
+               assertEquals("text/html", detector.getContentType("test.htm"));
+               assertEquals("image/png", detector.getContentType("test.png"));
+               assertEquals("application/json", 
detector.getContentType("test.json"));
+               assertEquals("text/plain", detector.getContentType("test.txt"));
+               assertEquals("text/plain", detector.getContentType("test.log"));
+               assertEquals("application/x-custom", 
detector.getContentType("test.custom"));
+               assertEquals("application/x-custom", 
detector.getContentType("test.cst"));
+       }
+
+       @Test
+       public void testAddTypesMixedUsage() {
+               MimeTypeDetector detector = MimeTypeDetector.builder()
+                       .addTypes("text/html html htm")  // Single line
+                       .addTypes("image/png png\napplication/json json")  // 
File contents
+                       .addTypes("application/x-foo foo bar")  // Another 
single line
+                       .build();
+               
+               assertEquals("text/html", detector.getContentType("test.html"));
+               assertEquals("text/html", detector.getContentType("test.htm"));
+               assertEquals("image/png", detector.getContentType("test.png"));
+               assertEquals("application/json", 
detector.getContentType("test.json"));
+               assertEquals("application/x-foo", 
detector.getContentType("test.foo"));
+               assertEquals("application/x-foo", 
detector.getContentType("test.bar"));
+       }
+
+       @Test
+       public void testAddTypesEmptyAndInvalidLines() {
+               MimeTypeDetector detector = MimeTypeDetector.builder()
+                       .addTypes(
+                               "",  // Empty line
+                               "   ",  // Whitespace only
+                               "# Comment line",  // Comment
+                               "invalid",  // Invalid format (no extensions)
+                               "text/html html htm"  // Valid line
+                       )
+                       .build();
+               
+               assertEquals("text/html", detector.getContentType("test.html"));
+               assertEquals("text/html", detector.getContentType("test.htm"));
+               assertEquals("application/octet-stream", 
detector.getContentType("test.unknown"));
+       }
+
+       @Test
+       public void testAddDefaultMappings() {
+               MimeTypeDetector detector = MimeTypeDetector.builder()
+                       .addDefaultMappings()
+                       .build();
+               
+               // Test some default mappings
+               assertEquals("text/html", detector.getContentType("test.html"));
+               assertEquals("text/html", detector.getContentType("test.htm"));
+               assertEquals("image/png", detector.getContentType("test.png"));
+               assertEquals("application/pdf", 
detector.getContentType("test.pdf"));
+               assertEquals("application/json", 
detector.getContentType("test.json"));
+               assertEquals("text/plain", detector.getContentType("test.txt"));
+               assertEquals("application/zip", 
detector.getContentType("test.zip"));
+       }
+
+       @Test
+       public void testGetContentTypeWithNioDetection() throws IOException {
+               // Create a temporary file
+               Path testFile = tempDir.resolve("test.txt");
+               Files.write(testFile, "Hello World".getBytes());
+               
+               MimeTypeDetector detector = MimeTypeDetector.builder()
+                       .addNioContentBasedDetection(true)
+                       .build();
+               
+               // Should use NIO detection for existing file
+               String mimeType = detector.getContentType(testFile.toString());
+               assertNotNull(mimeType);
+               assertTrue(mimeType.startsWith("text/"));
+       }
+
+       @Test
+       public void testGetContentTypeWithNioDetectionDisabled() throws 
IOException {
+               // Create a temporary file
+               Path testFile = tempDir.resolve("test.txt");
+               Files.write(testFile, "Hello World".getBytes());
+               
+               MimeTypeDetector detector = MimeTypeDetector.builder()
+                       .addNioContentBasedDetection(false)
+                       .addExtensionType("txt", "text/plain")
+                       .build();
+               
+               // Should use extension mapping instead of NIO detection
+               assertEquals("text/plain", 
detector.getContentType(testFile.toString()));
+       }
+
+       @Test
+       public void testGetContentTypeWithNioException() {
+               MimeTypeDetector detector = MimeTypeDetector.builder()
+                       .addNioContentBasedDetection(true)
+                       .addExtensionType("test", "application/x-test")
+                       .build();
+               
+               // Should fall back to extension mapping when NIO fails
+               assertEquals("application/x-test", 
detector.getContentType("test.test"));
+       }
+
+       @Test
+       public void testGetContentTypeEmptyAndNull() {
+               MimeTypeDetector detector = MimeTypeDetector.builder()
+                       .setDefaultType("application/unknown")
+                       .build();
+               
+               assertEquals("application/unknown", 
detector.getContentType(""));
+               assertEquals("application/unknown", 
detector.getContentType(null));
+       }
+
+       @Test
+       public void testGetContentTypeFallbackToDefault() {
+               MimeTypeDetector detector = MimeTypeDetector.builder()
+                       .setDefaultType("application/unknown")
+                       .build();
+               
+               assertEquals("application/unknown", 
detector.getContentType("test.unknown"));
+       }
+
+       @Test
+       public void testCacheBehavior() {
+               MimeTypeDetector detector = MimeTypeDetector.builder()
+                       .addExtensionType("test", "application/x-test")
+                       .build();
+               
+               // Initial state
+               assertEquals(0, detector.getCacheSize());
+               assertEquals(0, detector.getCacheHits());
+               
+               // First call - cache miss
+               detector.getContentType("test.test");
+               assertEquals(1, detector.getCacheSize());
+               assertEquals(0, detector.getCacheHits());
+               
+               // Second call - cache hit
+               detector.getContentType("test.test");
+               assertEquals(1, detector.getCacheSize());
+               assertEquals(1, detector.getCacheHits());
+               
+               // Third call - another cache hit
+               detector.getContentType("test.test");
+               assertEquals(1, detector.getCacheSize());
+               assertEquals(2, detector.getCacheHits());
+       }
+
+       @Test
+       public void testClearCache() {
+               MimeTypeDetector detector = MimeTypeDetector.builder()
+                       .addExtensionType("test", "application/x-test")
+                       .build();
+               
+               // Add some entries to cache
+               detector.getContentType("test.test");
+               detector.getContentType("test.other");
+               assertEquals(2, detector.getCacheSize());
+               
+               // Clear cache
+               detector.clearCache();
+               assertEquals(0, detector.getCacheSize());
+               
+               // Cache hits should remain (not reset by clear)
+               assertTrue(detector.getCacheHits() >= 0);
+       }
+
+       @Test
+       public void testCacheDisabled() {
+               MimeTypeDetector detector = MimeTypeDetector.builder()
+                       .setCacheDisabled(true)
+                       .addExtensionType("test", "application/x-test")
+                       .build();
+               
+               // Cache should be disabled
+               detector.getContentType("test.test");
+               assertEquals(0, detector.getCacheSize());
+               assertEquals(0, detector.getCacheHits());
+       }
+
+       @Test
+       public void testCacheSizeLimit() {
+               MimeTypeDetector detector = MimeTypeDetector.builder()
+                       .setCacheSize(2)
+                       .addExtensionType("test", "application/x-test")
+                       .build();
+               
+               // Add more entries than cache size
+               detector.getContentType("test1.test");
+               detector.getContentType("test2.test");
+               detector.getContentType("test3.test");
+               detector.getContentType("test4.test");
+               
+               // Cache should not exceed max size
+               assertTrue(detector.getCacheSize() <= 2);
+       }
+
+       @Test
+       public void testBuilderChaining() {
+               MimeTypeDetector detector = MimeTypeDetector.builder()
+                       .addFileType("special.txt", "text/special")
+                       .addExtensionType("custom", "application/x-custom")
+                       .addNioContentBasedDetection(false)
+                       .setCacheSize(100)
+                       .setCacheDisabled(false)
+                       .setCacheLogOnExit(true)
+                       .setDefaultType("application/unknown")
+                       .addTypes("text/html html htm")
+                       .addDefaultMappings()
+                       .build();
+               
+               assertNotNull(detector);
+               // File type mapping should work (takes precedence over 
extension mapping)
+               assertEquals("text/special", 
detector.getContentType("special.txt"));
+               assertEquals("application/x-custom", 
detector.getContentType("test.custom"));
+               assertEquals("text/html", detector.getContentType("test.html"));
+               assertEquals("application/unknown", 
detector.getContentType("test.unknown"));
+       }
+
+       @Test
+       public void testExtensionCaseInsensitive() {
+               MimeTypeDetector detector = MimeTypeDetector.builder()
+                       .addExtensionType("TEST", "application/x-test")
+                       .build();
+               
+               // Should work with different cases
+               assertEquals("application/x-test", 
detector.getContentType("test.TEST"));
+               assertEquals("application/x-test", 
detector.getContentType("test.test"));
+               assertEquals("application/x-test", 
detector.getContentType("test.Test"));
+       }
+
+       @Test
+       public void testMultipleExtensionsPerMimeType() {
+               MimeTypeDetector detector = MimeTypeDetector.builder()
+                       .addTypes("text/html html htm HTML HTM")
+                       .build();
+               
+               // All variations should work
+               assertEquals("text/html", detector.getContentType("test.html"));
+               assertEquals("text/html", detector.getContentType("test.htm"));
+               assertEquals("text/html", detector.getContentType("test.HTML"));
+               assertEquals("text/html", detector.getContentType("test.HTM"));
+       }
+
+       @Test
+       public void testWindowsLineEndings() {
+               String mimeTypesFile = 
"text/html\thtml\thtm\r\nimage/png\tpng\r\n";
+               
+               MimeTypeDetector detector = MimeTypeDetector.builder()
+                       .addTypes(mimeTypesFile)
+                       .build();
+               
+               assertEquals("text/html", detector.getContentType("test.html"));
+               assertEquals("text/html", detector.getContentType("test.htm"));
+               assertEquals("image/png", detector.getContentType("test.png"));
+       }
+
+       @Test
+       public void testUnixLineEndings() {
+               String mimeTypesFile = "text/html\thtml\thtm\nimage/png\tpng\n";
+               
+               MimeTypeDetector detector = MimeTypeDetector.builder()
+                       .addTypes(mimeTypesFile)
+                       .build();
+               
+               assertEquals("text/html", detector.getContentType("test.html"));
+               assertEquals("text/html", detector.getContentType("test.htm"));
+               assertEquals("image/png", detector.getContentType("test.png"));
+       }
+
+       @Test
+       public void testMixedLineEndings() {
+               String mimeTypesFile = 
"text/html\thtml\thtm\r\nimage/png\tpng\napplication/json\tjson\r\n";
+               
+               MimeTypeDetector detector = MimeTypeDetector.builder()
+                       .addTypes(mimeTypesFile)
+                       .build();
+               
+               assertEquals("text/html", detector.getContentType("test.html"));
+               assertEquals("text/html", detector.getContentType("test.htm"));
+               assertEquals("image/png", detector.getContentType("test.png"));
+               assertEquals("application/json", 
detector.getContentType("test.json"));
+       }
+}
\ No newline at end of file

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