Name: gm110360			Date: 10/11/2002


FULL PRODUCT VERSION :
java version "1.4.1"
Java(TM) 2 Runtime Environment, Standard Edition (build 1.4.1-b21)
Java HotSpot(TM) Client VM (build 1.4.1-b21, mixed mode)

FULL OPERATING SYSTEM VERSION : Windows NT Version 4.0




A DESCRIPTION OF THE PROBLEM :

The method getResource from the class Class run only
outside a jar file when the file is a directory.

STEPS TO FOLLOW TO REPRODUCE THE PROBLEM :
1. Create the class file from this source:

2. Create a directory with the name data where the class
file is.

3. execute the program(should be ok)

4. create a jar containing this class file, and the
directory

5. execute the jar file(should be ko)




EXPECTED VERSUS ACTUAL BEHAVIOR :

Outside a jar file:

url = file:/E:/bugJar/example/classes/data
url = file:/E:/bugJar/example/classes/data/
url = file:/E:/bugJar/example/classes/data//

when the data directory is inside a jar file:

url = null
url = null
url = null

notice that with a file(ie data is a file), it's ok.

Conclusion: impossible to test if a directory exists in a
jar file.




REPRODUCIBILITY :
This bug can be reproduced always.

---------- BEGIN SOURCE ----------
import java.net.URL;

public class bugJar
{

  public bugJar()
  {
    String dataStr = "data";
    URL url = bugJar.class.getResource(dataStr);
    System.out.println("url = "+url); // OK without jar
    dataStr = dataStr+"/";
    url = bugJar.class.getResource(dataStr);
    System.out.println("url = "+url); // OK without jar
    dataStr = dataStr+"\\";
    url = bugJar.class.getResource(dataStr);
    System.out.println("url = "+url); // OK without jar
  }

  public static void main(String args[])
  {
    new bugJar();
  }
}

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

CUSTOMER WORKAROUND :


use the API java.util.jar to explicitly open the jar file.
(Review ID: 165652) 
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