Bug 17149 Libraries-Path in Java Build Path gets broken
eclipse-version: F1, linux-gtk bug: "Libraries-Path" of external JARs in "Java Build Path" gets broken I observed the following bug: 1) Call the "Java Build Path"-Dialog via selecting a project, "Properties" via right mouse button and then "Java Build Path". 2) Enter a library path via "Add External JARs..." and press "OK" Everything is ok so far. 3) Call the "Java Build Path"-Dialog again: The path to the library I entered before is broken and eclipse does not find the library any more. The path in the project's .classpath-file is ok. example: I created the project "dummy". Tried to add the external JAR "jdom.jar" to the Library-Path. jdom.jar resides in the directory "/home/mike/java/workspace/jdom/build". I selected the path as an "external JAR" . The path is shown correctly in the libraries-list. When I called the "Java Build Path"-Dialog again the path listed in the "Java Build Path"-Dialog / "Libraries" is changed to "home/mike/java/workspace/jdom/build/jdom.jar" (without the first slash). When selecting this entry and clicking on "Edit" the path shown in the "Edit Class Folder"-dialog is "mike/java/workspace/jdom/build/jdom.jar" (without "/home/"). After trying to correct the path manually in the "Edit Class Folder"-dialog the path shown in "Java Build Path"-Dialog / "Libraries" is "dummy/home/mike/java/workspace/jdom/build/jdom.jar". My workaround so far is to create variables for each library and to enter the library paths as variables.
org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/wizards/buildpaths/BuildPathsBlock.java
}
			}
		}
		return false;
	}
	
	public static void removeOldClassfiles(IResource resource) throws CoreException {
		if (resource.isDerived() && "class".equals(resource.getFileExtension())) { 
			resource.delete(false, null);
		}
		if (resource instanceof IContainer) {
			IResource[] members= ((IContainer) resource).members();
			for (int i= 0; i < members.length; i++) {
				removeOldClassfiles(members[i]);
			}
		}
	}
	
	public static IRemoveOldBinariesQuery getRemoveOldBinariesQuery(final Shell shell) {
		return new IRemoveOldBinariesQuery() {
			public boolean doQuery(final IPath oldOutputLocation) throws InterruptedException {
				final int[] res= new int[] { 1 };
				shell.getDisplay().syncExec(new Runnable() {
					public void run() {
						String title= NewWizardMessages.getString("BuildPathsBlock.RemoveBinariesDialog.title"); 
						String message= NewWizardMessages.getFormattedString("BuildPathsBlock.RemoveBinariesDialog.description", oldOutputLocation.toString()); 
						MessageDialog dialog= new MessageDialog(shell, title, null, message, MessageDialog.QUESTION, new String[] { IDialogConstants.YES_LABEL, IDialogConstants.NO_LABEL, IDialogConstants.CANCEL_LABEL }, 2);
						res[0]= dialog.open();
					}
				});