Bug 30412 ClassCastException selecting package in java browsing perspective
Build: I20030122 I have the java browsing perspective open. I selected a package in the packages view, and there was an error trying to open the type browsing view. I can't seem to reproduce it, but hopefully the stack trace will be useful. The result was that the types view could not be initialized (the view contained an error message saying it could not be created.
org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/browsing/JavaBrowsingPart.java
ICompilationUnit cu= getCompilationUnit(workingCopy);
		if (cu != null)
			return ((IWorkingCopy)cu).getOriginal(workingCopy);
		return null;
	}
	/**
	 * Returns the compilation unit for the given java element.
	 * 
	 * @param	element the java element whose compilation unit is searched for
	 * @return	the compilation unit of the given java element
	 */
	protected static ICompilationUnit getCompilationUnit(IJavaElement element) {
		if (element == null)
			return null;
			
		if (element instanceof IMember)
			return ((IMember) element).getCompilationUnit();
		
		int type= element.getElementType();
		if (IJavaElement.COMPILATION_UNIT == type)
			return (ICompilationUnit) element;
		if (IJavaElement.CLASS_FILE == type)
			return null;
			
		return getCompilationUnit(element.getParent());
	}
	/**
	 * Converts the given Java element to one which is suitable for this
	 * view. It takes into account wether the view shows working copies or not.
	 *