[笔记] 疯狂JAVA讲义（第3版）第12章 Swing编程

//获取当前支持的LAF（LookAndFeel）
import javax.swing.UIManager;
import java.swing.*;
public class AlllLookAndFeel
{
public static void main(String[] args) {
System.out.println(“可用LAF”);
for(UIManager.LookAndFeelInfo info:
UIManager.getInstalledLookAndFeels()){
System.out.println(info.getName()+" "+info);
}
}
}

//使用Swing组件创建窗口，功能基本没实现。实现了右键改变窗口风格
import java.awt.BorderLayout;
import java.awt.event.InputEvent;
import java.awt.event.ActionListener;
import javax.swing.Box;
import javax.swing.ButtonGroup;
import javax.swing.Icon;
import javax.swing.ImageIcon;
import javax.swing.JButton;
import javax.swing.JCheckBox;
import javax.swing.JCheckBoxMenuItem;
import javax.swing.JComboBox;
import javax.swing.JFrame;
import javax.swing.JList;
import javax.swing.JMenu;
import javax.swing.JMenuBar;
import javax.swing.JMenuItem;
import javax.swing.JPanel;
import javax.swing.JPopupMenu;
import javax.swing.JRadioButton;
import javax.swing.JRadioButtonMenuItem;
import javax.swing.JScrollPane;
import javax.swing.JTextArea;
import javax.swing.JTextField;
import javax.swing.KeyStroke;
import javax.swing.SwingUtilities;
import javax.swing.UIManager;
public class SwingComponent
{
JFrame f = new JFrame(“测试”);
Icon okIcon = new ImageIcon(“ico/ok.png”);
JButton ok = new JButton(“确认”,okIcon);
JRadioButton male = new JRadioButton(“男”,true);
JRadioButton female = new JRadioButton(“女”,false);
ButtonGroup bg = new ButtonGroup();
JCheckBox married = new JCheckBox(“是否已婚？”,false);
String[] colors = new String[]{“红”,“黄”,“蓝”};
JComboBox<String> colorChooser = new JComboBox<>(colors);
JList<String> colorList = new JList<>(colors);
JTextArea ta = new JTextArea(8,20);
JTextField name = new JTextField(40);
JMenuBar mb = new JMenuBar();
JMenu file = new JMenu(“文件”);
JMenu edit = new JMenu(“编辑”);
Icon newIcon = new ImageIcon(“D://TEST//java//ch12//ico//new.png”);
JMenuItem newItem = new JMenuItem(“新建”,newIcon);
Icon saveIcon = new ImageIcon(“D://TEST//java//ch12//ico//save.png”);
JMenuItem saveItem = new JMenuItem(“保存”,saveIcon);
Icon exitIcon = new ImageIcon(“D://TEST//java//ch12//ico//exit.png”);
JMenuItem exitItem = new JMenuItem(“退出”,exitIcon);
JCheckBoxMenuItem autoWrap = new JCheckBoxMenuItem(“自动换行”);
JMenuItem copyItem = new JMenuItem(“复制”,new ImageIcon(“D://TEST//java//ch12//ico//copy.png”));
JMenuItem pasteItem = new JMenuItem(“粘贴”,new ImageIcon(“D://TEST//java//ch12//ico//paste.png”));
JMenu format = new JMenu(“格式”);
JMenuItem commentItem = new JMenuItem(“注释”);
JMenuItem cancelItem = new JMenuItem(“取消注释”);
JPopupMenu pop = new JPopupMenu();
ButtonGroup flavorGroup = new ButtonGroup();
JRadioButtonMenuItem metalItem = new JRadioButtonMenuItem(“Metal”,true);
JRadioButtonMenuItem nimbuslItem = new JRadioButtonMenuItem(“Nimbus”);
JRadioButtonMenuItem windowsItem = new JRadioButtonMenuItem(“Windows”);
JRadioButtonMenuItem classicItem = new JRadioButtonMenuItem(“Classic”);
JRadioButtonMenuItem motifItem = new JRadioButtonMenuItem(“Motif”);
public void init()
{
JPanel bottom = new JPanel();
bottom.add(name);
bottom.add(ok);
f.add(bottom,BorderLayout.SOUTH);
JPanel checkPanel = new JPanel();
checkPanel.add(colorChooser);
bg.add(male);
bg.add(female);
checkPanel.add(male);
checkPanel.add(female);
checkPanel.add(married);
Box topLeft = Box.createVerticalBox();
JScrollPane taJsp = new JScrollPane(ta);
topLeft.add(taJsp);
topLeft.add(checkPanel);
Box top = Box.createHorizontalBox();
top.add(topLeft);
top.add(colorList);
f.add(top);
newItem.setAccelerator(KeyStroke.getKeyStroke(‘N’, InputEvent.CTRL_DOWN_MASK));//java 9后不推荐使用CTRL_MASK
newItem.addActionListener(e->ta.append(“用户单击了"新建菜单”\n"));
file.add(newItem);
file.add(saveItem);
file.add(exitItem);
edit.add(autoWrap);
edit.addSeparator();
edit.add(copyItem);
edit.add(pasteItem);
commentItem.setToolTipText(“将代码注释起来”);
format.add(commentItem);
format.add(cancelItem);
edit.add(new JMenuItem("-"));
edit.add(format);
mb.add(file);
mb.add(edit);
f.setJMenuBar(mb);
flavorGroup.add(metalItem);
flavorGroup.add(nimbuslItem);
flavorGroup.add(windowsItem);
flavorGroup.add(classicItem);
flavorGroup.add(motifItem);
pop.add(metalItem);
pop.add(nimbuslItem);
pop.add(windowsItem);
pop.add(classicItem);
pop.add(motifItem);
ActionListener flavorListener = e->{
try{
switch (e.getActionCommand()) {
case “Metal风格”:
changeFlavor(1);
break;
case “Nimbus风格”:
changeFlavor(2);
case “Windows风格”:
changeFlavor(3);
case “Windows经典风格”:
changeFlavor(4);
case “Motif风格”:
changeFlavor(5);
default:
break;
}
}
catch(Exception ee){
ee.printStackTrace();
}
};
metalItem.addActionListener(flavorListener);
nimbuslItem.addActionListener(flavorListener);
windowsItem.addActionListener(flavorListener);
classicItem.addActionListener(flavorListener);
motifItem.addActionListener(flavorListener);
ta.setComponentPopupMenu(pop);
f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
f.pack();
f.setVisible(true);
}
private void changeFlavor(int flavor) throws Exception{
switch(flavor){
case 1:
UIManager.setLookAndFeel(“javax.swing.plaf.metal.MetalLookAndFeel”);
break;
case 2:
UIManager.setLookAndFeel(“javax.swing.plaf.nimbus.NimbusLookAndFeel”);
break;
case 3:
UIManager.setLookAndFeel(“com.sun.java.swing.plaf.motif.MotifLookAndFeel”);
break;
case 4:
UIManager.setLookAndFeel(“com.sun.java.swing.plaf.windows.WindowsLookAndFeel”);
break;
case 5:
UIManager.setLookAndFeel(“com.sun.java.swing.plaf.windows.WindowsClassicLookAndFeel”);
break;
}
SwingUtilities.updateComponentTreeUI(f.getContentPane());
SwingUtilities.updateComponentTreeUI(mb);
SwingUtilities.updateComponentTreeUI(pop);
}
public static void main(String[] args) {
new SwingComponent().init();
}
}