naotsugu opened a new issue, #4646:
URL: https://github.com/apache/netbeans/issues/4646
### Apache NetBeans version
Apache NetBeans 15
### What happened
An exception is raised if an attribute is specified in the JavaDoc to be
trimmed.
```
java.lang.StringIndexOutOfBoundsException: begin 0, end 7, length 6
at java.base/java.lang.String.checkBoundsBeginEnd(String.java:4604)
at java.base/java.lang.String.substring(String.java:2707)
at
org.netbeans.modules.java.editor.base.javadoc.JavadocImports.processDocTreeNode(JavadocImports.java:824)
at
org.netbeans.modules.java.editor.base.javadoc.JavadocImports.access$100(JavadocImports.java:81)
at
org.netbeans.modules.java.editor.base.javadoc.JavadocImports$1.scan(JavadocImports.java:135)
at
org.netbeans.modules.java.editor.base.javadoc.JavadocImports$1.scan(JavadocImports.java:117)
at com.sun.source.util.DocTreeScanner.scanAndReduce(DocTreeScanner.java:88)
at com.sun.source.util.DocTreeScanner.scan(DocTreeScanner.java:103)
at com.sun.source.util.DocTreeScanner.visitReturn(DocTreeScanner.java:419)
```
### How to reproduce
An exception will be thrown if a character containing spaces such as `{@ `
is present in the JavaDoc.
```
/**
* {@
*/
```
Note that this character contains spaces.
The following incorrect trim process is the cause.
org.netbeans.modules.java.editor.base.javadoc.JavadocImports.java
```java
int errorBodyLength = body.trim().substring(0,
body.length()).trim().length();
```
I do not understand the intent of the above, but I speculate that the
following is appropriate.
```java
int errorBodyLength = body.trim().length();
```
Added in this pull.
[https://github.com/apache/netbeans/pull/2954](https://github.com/apache/netbeans/pull/2954)
### Did this work correctly in an earlier version?
Apache NetBeans 12.4
### Operating System
MacOS 12.5.1
### JDK
OpenJDK 64-Bit Server VM Corretto-18.0.0.37.1
### Apache NetBeans packaging
Apache NetBeans binary zip
### Anything else
_No response_
### Are you willing to submit a pull request?
Yes
### Code of Conduct
Yes
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