Error 206 occures on JUnit test in Eclipse

Question

I have a problem when i try to run JUnit test class in Eclipse.

Exception occurred executing command line. Cannot run program "C:\Program Files\Java\jre7\bin\javaw.exe" (in directory "C:\Users\User\Documents\Projects\MyProject"): CreateProcess error=206, The filename or extension is too long

After I received this error I started to search how to fix the problem... However now I generated MANIFEST file that contains all of the jars that i need, but I don't know how to pass the new manifest file to the project and also what to do with the jars in my lib dir?

Thanks in advance!

EDIT:

I have SimpleTest class and TestRunner class

public class SimpleTest {

     @Test
       public void testAssertions() {

          String str1 = new String ("abc");
          String str2 = new String ("abc");

          assertEquals(str1, str2);       
     }
    }

package com.epb.junit;

import org.junit.runner.JUnitCore;
import org.junit.runner.Result;
import org.junit.runner.notification.Failure;

public class TestRunner {
   public static void main(String[] args) {
      Result result = JUnitCore.runClasses(SimpleTest.class);
      for (Failure failure : result.getFailures()) {
         System.out.println(failure.toString());
      }
      System.out.println(result.wasSuccessful());
   }
} 

Nothing interesting here, I just need to know how to pack all of my JAR files which I am using, because they are too many... I made a manifest file with all of them but I don't know how to pass it instead of JAR files.

P.S I am running the test class with Eclipse -> Run As -> JUnit Test option. After the error occured I've made this TestRunner class and I am running it as Java Application but still Error 206. From the things that I read I realized that my Build Path is too long, because there are a lot of JARS so now I'm looking to find a way to shorten this Path and to pack the jars into one. I've tried to export the lib folder into Jar file but it doesn't worked.

EDIT 2

The last thing that I tried just before a moment is to create a "pathing jar" which contains only Manifest.mf file inside it. I put this jar in my project Build Path instead of all other Jars but still no result... now the project has errors for the Built Path...

Answer 1

All you need to do is to follow these steps:

1. Copy your eclipse/plugins/org.eclipse.jdt.launching_3.4.*.jar to a safe place outside of the plugins folder, so that you always have a way to revert.
2. Close Eclipse.
3. Rename the *.jar to *.zip
4. Open the zip file and copy the 4 class files from the attachment to org\eclipse\jdt\internal\launching (replace existing files)
5. Go to META-INF in the zip file and delete all files except MANIFEST.MF
6. Extract MANIFEST.MF to your disk and edit it with a text editor.
7. Remove everything starting from the first "NAME:" entry.
8. Make sure you leave two (2) line break characters at the end of the file!
9. Save the MANIFEST.MF and copy it back into the zip file.
10. Rename the *.zip back to *.jar
11. Replace the modified jar with the jar in you Eclipse/plugin directory!
12. Enjoy!

PS. ATTACHMENT from step 4 can be downloaded from here:

https://bugs.eclipse.org/bugs/attachment.cgi?id=216637

Thanks to Mr.Markus Keller who created those steps!