Bug 31683 Show In doesn't work for class file in rt.jar
I20030611 - create Test project that uses Jar container - open NumberFormat.class - activate Show In... and choose Package Explorer Observe: NumberFormat.class doesn't get revealed.
org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/packageview/PackageExplorerActionGroup.java
delete.run();
		}
		else if (event.keyCode == SWT.BS) {
			if (fUpAction != null && fUpAction.isEnabled()) 
				fUpAction.run();
		}
	}
	
	private IPropertyChangeListener createTitleUpdater() {
		return new IPropertyChangeListener() {
			public void propertyChange(PropertyChangeEvent event) {
				String property= event.getProperty();
				if (IWorkingSetManager.CHANGE_WORKING_SET_NAME_CHANGE.equals(property)) {
					IWorkingSet workingSet= (IWorkingSet)event.getNewValue();
					String workingSetName= null;
					if (workingSet != null)
						workingSetName= workingSet.getName();
					fPart.setWorkingSetName(workingSetName);
					fPart.updateTitle();
				}
			}
		};
	}
	private boolean showCompilationUnitChildren() {
		return PreferenceConstants.getPreferenceStore().getBoolean(PreferenceConstants.SHOW_CU_CHILDREN);
	}
	private boolean doubleClickGoesInto() {
		return PreferenceConstants.DOUBLE_CLICK_GOES_INTO.equals(PreferenceConstants.getPreferenceStore().getString(PreferenceConstants.DOUBLE_CLICK));
	}
}