Bug 66439 Copy of Class causes update error in package explorer
RC1 RHEL JDK 1.4.2_02 Motif I have experienced a problem where I copy a java file and paste it into the same package, accepting the default new name (CopyOfClass.java) However, the package view does not list the class, but it does list 2 instances of the last class in the package (note that I am using the hierarchical view). The file is aparently inserted in the correct location, but the name->class mapping is incorrect: clicking on classes that appear before where the new class should be inserted brings up the correct class, but clicking on classes that appear after the inserted class brings up a different class than the one selected. Restarting eclipse causes the problem to go away
bundles/org.eclipse.jface/src/org/eclipse/jface/viewers/AbstractTreeViewer.java
boolean removeAll = false;
		boolean addDummy = false;
		Object data = item.getData();
		if (data != null && equals(element, data)) {
			
			if (hasPlus != needsPlus) {
				if (needsPlus)
					addDummy = true;
				else
					removeAll = true;
			}
		} else {
			
			removeAll = true;
			addDummy = needsPlus;
			
			setExpanded(item, false);
		}
		if (removeAll) {
			
			Item[] items = getItems(item);
			for (int i = 0; i < items.length; i++) {
				if (items[i].getData() != null)
					disassociate(items[i]);
				items[i].dispose();
			}
		}
		if (addDummy)
			newItem(item, SWT.NULL, -1); 
	}