Bug 15656 Two differerent Views are called "packages"
There are two different views called Packages - one in the Java Browsing perspective and one in the Java Perspective. This is very confusing for someone trying to get one of the using Show V
org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/browsing/PackagesView.java
/**
	 * Adds filters the viewer of this part.
	 */
	protected void addFilters() {
		super.addFilters();
		getViewer().addFilter(new EmptyInnerPackageFilter());
		getViewer().addFilter(new NonJavaElementFilter());
		getViewer().addFilter(new LibraryFilter());
		
		JavaElementPatternFilter patternFilter= new JavaElementPatternFilter();
		patternFilter.setPatterns(new String[] {"CVS", "*.CVS"}); 
		getViewer().addFilter(patternFilter);
	}
	protected ILabelProvider createLabelProvider() {
		return new AppearanceAwareLabelProvider(
						AppearanceAwareLabelProvider.DEFAULT_TEXTFLAGS | JavaElementLabels.P_COMPRESSED,
						AppearanceAwareLabelProvider.DEFAULT_IMAGEFLAGS | JavaElementImageProvider.SMALL_ICONS,
						AppearanceAwareLabelProvider.getDecorators(true, null)
						);
	}