Bug 80673 Package explorer using working sets does not display source folders correctly on project creation
Using I200412081200 Do the following steps: - Open new java project wizard and enter a name - set the location to the workpace and use the project folder as root - click next - click on "Add folder" and enter a name - on the following dialog, click "no" - click finish We just created a source folder, but the icon displayed in the package explorer looks like a normal folder (which is not on the classpath).
org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/workingsets/OthersWorkingSetUpdater.java
private boolean contains(IWorkingSet[] workingSets, IWorkingSet workingSet) {
			for (int i= 0; i < workingSets.length; i++) {
				if (workingSets[i] == workingSet)
					return true;
			}
			return false;
		}
	}
	private IPropertyChangeListener fWorkingSetListener;
	
	/**
	 * {@inheritDoc}
	 */
	public void add(IWorkingSet workingSet) {
		Assert.isTrue(fWorkingSet == null);
		fWorkingSet= workingSet;
	}
	
	/**
	 * {@inheritDoc}
	 */
	public boolean remove(IWorkingSet workingSet) {
		Assert.isTrue(fWorkingSet == workingSet);
		fWorkingSet= null;
		return true;
	}
	
	/**
	 * {@inheritDoc}
	 */