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    public void deleteABookmark() {       if (tree != null) {         if(tree.getLastSelectedPathComponent() != null)  {        	if(tree.getLastSelectedPathComponent() == root)        		return;        	else {        		File delFile = new File("bookmarks/" + tree.getLastSelectedPathComponent().toString());        		if(delFile.exists())        			delFile.delete();                treeModel.removeNodeFromParent((MutableTreeNode)tree.getLastSelectedPathComponent());        	}         }         else return;       }       else return;    }