FULL PRODUCT VERSION :
java version "1.6.0_20"
Java(TM) SE Runtime Environment (build 1.6.0_20-b02)
Java HotSpot(TM) Client VM (build 16.3-b01, mixed mode, sharing)

ADDITIONAL OS VERSION INFORMATION :
Microsoft Windows XP [version 5.1.2600]

A DESCRIPTION OF THE PROBLEM :
I can't delete a zip file where I read an entry with the jar protocol.

This bug is probably the same as bug #5041014 but adding a close() method to URLClassLoader described in that bug won't solve this bug.

STEPS TO FOLLOW TO REPRODUCE THE PROBLEM :
Compile and run the following test case:

import java.io.*;
import java.net.URL;
import java.util.UUID;
import java.util.zip.*;

public class ZipFileDeleteTest {
   public static void main(String[] args) throws IOException {
       // Create a zip file
       File testFile = new File(UUID.randomUUID().toString() + ".zip");
       // Write an entry in the zip file
       ZipOutputStream out = new ZipOutputStream(new FileOutputStream(testFile));
       out.putNextEntry(new ZipEntry("test"));
       out.write('a');
       out.closeEntry();
       out.close();
       // Access to the entry with jar: protocol
       URL url = new URL("jar:" + testFile.toURI().toURL() + "!/test");
       InputStream in = url.openStream();
       in.read();
       in.close();
       // Try to delete the zip file
       System.out.println(testFile.delete());
   }
}


EXPECTED VERSUS ACTUAL BEHAVIOR :
EXPECTED -
I expected the program would display "true"
ACTUAL -
The program displayed "false" meaning the file wasn't deleted.
Under Mac OS X and Linux, it displays "true" as expected.

REPRODUCIBILITY :
This bug can be reproduced always.

---------- BEGIN SOURCE ----------
import java.io.*;
import java.net.URL;
import java.util.UUID;
import java.util.zip.*;

public class ZipFileDeleteTest {
   public static void main(String[] args) throws IOException {
       // Create a zip file
       File testFile = new File(UUID.randomUUID().toString() + ".zip");
       // Write an entry in the zip file
       ZipOutputStream out = new ZipOutputStream(new FileOutputStream(testFile));
       out.putNextEntry(new ZipEntry("test"));
       out.write('a');
       out.closeEntry();
       out.close();
       // Access to the entry with jar: protocol
       URL url = new URL("jar:" + testFile.toURI().toURL() + "!/test");
       InputStream in = url.openStream();
       in.read();
       in.close();
       // Try to delete the zip file
       System.out.println(testFile.delete());
   }
}

---------- END SOURCE ----------

CUSTOMER SUBMITTED WORKAROUND :
Probably, not using jar protocol, or using a URLStreamHandler that changes the existing behavior of  sun.net.www.protocol.jar.Handler class.