import javax.swing.*;import java.awt.Dimension;public class JSplitPaneDemo{ public static void main (String[] args) {    JButton button = new JButton ("button");  JLabel label = new JLabel ("label");    JSplitPane splitPane = new JSplitPane ();  splitPane.setOneTouchExpandable (true);//是该分隔面板的分隔条显示出箭头  splitPane.setContinuousLayout (true);  splitPane.setPreferredSize (new Dimension (500,600));//设置大小  splitPane.setOrientation (JSplitPane.HORIZONTAL_SPLIT);  splitPane.setLeftComponent (button);//same as: splitPane.setTopComponent(button);  splitPane.setRightComponent (label);//same as: splitPane.setBottomComponent(label);  splitPane.setDividerSize (5);//设置分隔条的粗细  splitPane.setDividerLocation(200);//设置分隔条的位置，基于setPreferredSize方法中的值，           //此处为200/500，大概在中间靠左   JFrame frame = new JFrame ("JSplitPanelDemo");  frame.setDefaultCloseOperation (JFrame.EXIT_ON_CLOSE);  frame.setVisible (true);  frame.setContentPane (splitPane);  frame.pack ();//此方法必须在加载splitPane之后调用 }}

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