kou commented on code in PR #36422:
URL: https://github.com/apache/arrow/pull/36422#discussion_r1251290913


##########
java/dataset/src/test/java/org/apache/arrow/dataset/TextBasedWriteSupport.java:
##########
@@ -24,17 +24,18 @@
 import java.net.URISyntaxException;
 import java.util.Random;
 
-public class CsvWriteSupport {
+public class TextBasedWriteSupport {
   private final URI uri;
   private final Random random = new Random();
 
-  public CsvWriteSupport(File outputFolder) throws URISyntaxException {
-    uri = new URI("file", outputFolder.getPath() + "/" + "generated-" + 
random.nextLong() + ".csv", null);
+  public TextBasedWriteSupport(File outputFolder, String 
jsonOrCsvFileExtension) throws URISyntaxException {
+    uri = new URI("file", outputFolder.getPath() + File.separator +
+        "generated-" + random.nextLong() + jsonOrCsvFileExtension, null);

Review Comment:
   ```suggestion
     public TextBasedWriteSupport(File outputFolder, String fileExtension) 
throws URISyntaxException {
       uri = new URI("file", outputFolder.getPath() + File.separator +
           "generated-" + random.nextLong() + fileExtension, null);
   ```



##########
java/dataset/src/test/java/org/apache/arrow/dataset/TextBasedWriteSupport.java:
##########
@@ -24,17 +24,18 @@
 import java.net.URISyntaxException;
 import java.util.Random;
 
-public class CsvWriteSupport {
+public class TextBasedWriteSupport {
   private final URI uri;
   private final Random random = new Random();
 
-  public CsvWriteSupport(File outputFolder) throws URISyntaxException {
-    uri = new URI("file", outputFolder.getPath() + "/" + "generated-" + 
random.nextLong() + ".csv", null);
+  public TextBasedWriteSupport(File outputFolder, String 
jsonOrCsvFileExtension) throws URISyntaxException {
+    uri = new URI("file", outputFolder.getPath() + File.separator +
+        "generated-" + random.nextLong() + jsonOrCsvFileExtension, null);
   }
 
-  public static CsvWriteSupport writeTempFile(File outputFolder, String... 
values)
+  public static TextBasedWriteSupport writeTempFile(File outputFolder, String 
jsonOrCsvFileExtension, String... values)

Review Comment:
   ```suggestion
     public static TextBasedWriteSupport writeTempFile(File outputFolder, 
String fileExtension, String... values)
   ```



##########
java/dataset/src/test/java/org/apache/arrow/dataset/TextBasedWriteSupport.java:
##########
@@ -24,17 +24,18 @@
 import java.net.URISyntaxException;
 import java.util.Random;
 
-public class CsvWriteSupport {
+public class TextBasedWriteSupport {
   private final URI uri;
   private final Random random = new Random();
 
-  public CsvWriteSupport(File outputFolder) throws URISyntaxException {
-    uri = new URI("file", outputFolder.getPath() + "/" + "generated-" + 
random.nextLong() + ".csv", null);
+  public TextBasedWriteSupport(File outputFolder, String 
jsonOrCsvFileExtension) throws URISyntaxException {
+    uri = new URI("file", outputFolder.getPath() + File.separator +
+        "generated-" + random.nextLong() + jsonOrCsvFileExtension, null);
   }
 
-  public static CsvWriteSupport writeTempFile(File outputFolder, String... 
values)
+  public static TextBasedWriteSupport writeTempFile(File outputFolder, String 
jsonOrCsvFileExtension, String... values)
       throws URISyntaxException, IOException {
-    CsvWriteSupport writer = new CsvWriteSupport(outputFolder);
+    TextBasedWriteSupport writer = new TextBasedWriteSupport(outputFolder, 
jsonOrCsvFileExtension);

Review Comment:
   ```suggestion
       TextBasedWriteSupport writer = new TextBasedWriteSupport(outputFolder, 
fileExtension);
   ```



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