Bug 197113 Project Explorer drag and drop selection not working properly
Create a new java project. Open Project Explorer. Create 2 new classes - Test1 and Test2. Close the java code editors. Select Test1.java in the project explorer. Select Test2.java by doing a mouse down only (so Test1.java still appears highlighted) then drag Test2.java into the code editor area ()- Test1.java is displayed. This only occurs in the Project Explorer, the package explorer works fine.
bundles/org.eclipse.ui.navigator/src/org/eclipse/ui/navigator/CommonViewer.java
* @see CommonDropAdapter
	 */
	protected void initDragAndDrop() {
		
		int operations = DND.DROP_COPY | DND.DROP_MOVE;
		CommonDragAdapter dragAdapter = new CommonDragAdapter(contentService,
				this);
		addDragSupport(operations, dragAdapter.getSupportedDragTransfers(),
				dragAdapter);
		CommonDropAdapter dropAdapter = new CommonDropAdapter(contentService,
				this);
		addDropSupport(operations, dropAdapter.getSupportedDropTransfers(),
				dropAdapter);
	}
	/*
	 * (non-Javadoc)
	 * 
	 * @see org.eclipse.jface.viewers.AbstractTreeViewer#createTreeItem(org.eclipse.swt.widgets.Widget,
	 *      java.lang.Object, int)
	 */
	protected void createTreeItem(Widget parent, final Object element, int index) {
		try {
			super.createTreeItem(parent, element, index);
		} catch (Exception ex) {
			ex.printStackTrace();
		} catch (Error e) {
			e.printStackTrace();
		}
	}
	/*