Snapping JSplitPane Divider，jsplitpanedivider,/** * MySwin

Snapping JSplitPane Divider，jsplitpanedivider,/** * MySwin

/** * MySwing: Advanced Swing Utilites * Copyright (C) 2005  Santhosh Kumar T * <p/> * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2.1 of the License, or (at your option) any later version. * <p/> * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU * Lesser General Public License for more details. */public class SnapSplitPaneDividerDemo extends JFrame{    public SnapSplitPaneDividerDemo(){        super("Snap Divider - santhosh.tekuri@gmail.com");        setDefaultCloseOperation(EXIT_ON_CLOSE);        JTree tree = new JTree();        tree.expandRow(1);        JSplitPane split = new JSplitPane(JSplitPane.HORIZONTAL_SPLIT, new JScrollPane(tree), new JScrollPane(new JTextArea(15, 50))){            // overridden to mape divider snap while dragging            public void setDividerLocation(int location){                Dimension prefSize = getLeftComponent().getPreferredSize();                int pref = (getOrientation()==HORIZONTAL_SPLIT ? prefSize.width : prefSize.height) + getDividerSize()/2;                super.setDividerLocation(Math.abs(pref-location)<=10 ? pref : location);            }        };        split.setContinuousLayout(true);        getContentPane().add(split);        pack();    }    public static void main(String[] args){        new SnapSplitPaneDividerDemo().setVisible(true);    }}//该片段来自于http://byrx.net