《Java2图形设计卷II：Swing》配套光盘源码

				import java.awt.*;
				import java.awt.event.*;
				import javax.swing.*;
				
				public class Test extends JApplet {
					public Test() {
						Container contentPane = getContentPane();
						JButton left, right;
						JSplitPane sp = new JSplitPane();
						ControlPanel cp = new ControlPanel(sp);
				
						contentPane.setLayout(new BorderLayout());
						contentPane.add(sp, BorderLayout.CENTER);
						contentPane.add(cp, BorderLayout.NORTH);
				
						left = (JButton)sp.getTopComponent();
						right = (JButton)sp.getBottomComponent();
				
						System.out.println("left button minimum size: " + 
									left.getMinimumSize());
						System.out.println("right button minimum size: " + 
									right.getMinimumSize());
				
					}
				}
				
				class ControlPanel extends JPanel {
					private JSplitPane sp;
				
					public ControlPanel(JSplitPane splitPane) {
						sp = splitPane;
				
						JComboBox dividerSize = new JComboBox();
						JComboBox orientation = new JComboBox();
				
						JCheckBox continuous = new JCheckBox(
													"Continuous Layout");
						JCheckBox oneTouch = new JCheckBox(
													"One Touch Expandable");
				
						Integer initialSize = new Integer(sp.getDividerSize());
						dividerSize.addItem(initialSize.toString());
						dividerSize.addItem("10");
						dividerSize.addItem("20");
						dividerSize.addItem("30");
						dividerSize.addItem("40");
				
						orientation.addItem("horizontal");
						orientation.addItem("vertical");
				
						int initialOrientation = sp.getOrientation();
						if(initialOrientation == JSplitPane.HORIZONTAL_SPLIT)
							orientation.setSelectedItem("horizontal");
						else
							orientation.setSelectedItem("vertical");
				
						boolean initialContinuousLayout = sp.isContinuousLayout();
						if(initialContinuousLayout)
							continuous.setSelected(true);
				
						add(oneTouch);
						add(continuous);
						add(new JLabel("Divider Size:"));
						add(dividerSize);
						add(new JLabel("Orientation:"));
						add(orientation);
				
						oneTouch.addItemListener(new ItemListener() {
							public void itemStateChanged(ItemEvent e) {
								if(e.getStateChange() == ItemEvent.SELECTED)
									sp.setOneTouchExpandable(true);
								else
									sp.setOneTouchExpandable(false);
							}
						});
						continuous.addItemListener(new ItemListener() {
							public void itemStateChanged(ItemEvent e) {
								if(e.getStateChange() == ItemEvent.SELECTED)
									sp.setContinuousLayout(true);
								else
									sp.setContinuousLayout(false);
							}
						});
						dividerSize.addItemListener(new ItemListener() {
							public void itemStateChanged(ItemEvent e) {
								JComboBox combo = (JComboBox)e.getSource();
								String s = (String)combo.getSelectedItem();
				
								sp.setDividerSize(Integer.parseInt(s));
							}
						});
						orientation.addItemListener(new ItemListener() {
							public void itemStateChanged(ItemEvent e) {
								JComboBox combo = (JComboBox)e.getSource();
								String s = (String)combo.getSelectedItem();
				
								if(s.equals("horizontal"))
									sp.setOrientation(
											JSplitPane.HORIZONTAL_SPLIT);
								else
									sp.setOrientation(JSplitPane.VERTICAL_SPLIT);
							}
						});
					}
				}