标签：des style class blog code java
（一）Swing概述
将Swing组件按功能来分:
->顶层容器: JFrame、JApplet、JDialog和JWindow
->中间容器: JPanel、JScrollPane、JSplitPane、JToolBar等
->特殊容器:在用户界面上具有特殊作用的中间容器,如JInternalFrame、JRootPane、JLayeredPane和JDestopPane等
->基本组件:实现人机交互的组件,如JButton、JComboBox、JList、JMenu、JSlider等
->不可编辑信息的显示组件:向用户显示不可编辑信息的组件,如JLabel、JProgressBar和JToolTip等
->可编辑信息的显示组件:向用户显示能被编辑的格式化信息的组件,如JTable、JTextArea和JTextField等
->特殊对话框组件:可以直接产生特殊对话框的组件,如JColorChooser和JFileChooser等
Swing 提供了多种独立于各种平台的LAF（Look And Feel）,为了获取获取当前JRE所支持的LAF,可以借助于UIManager的getInstalledLookAndFeels()方法,如下程序所示:
import javax.swing.UIManager;
public class AllLookAndFeel
{
public static void main(String[] args)
{
System.out.println("当前系统可用的所有LAF:");
for(UIManager.LookAndFeelInfo info : UIManager.getInstalledLookAndFeels())
{
System.out.println(info.getName() + "---->"+info);
}
}
}
//运行结果:
当前系统可用的所有LAF:
Metal---->javax.swing.UIManager$LookAndFeelInfo[Metal javax.swing.plaf.metal.MetalLookAndFeel]
Nimbus---->javax.swing.UIManager$LookAndFeelInfo[Nimbus javax.swing.plaf.nimbus.NimbusLookAndFeel]
CDE/Motif---->javax.swing.UIManager$LookAndFeelInfo[CDE/Motif com.sun.java.swing.plaf.motif.MotifLookAndFeel]
Windows---->javax.swing.UIManager$LookAndFeelInfo[Windows com.sun.java.swing.plaf.windows.WindowsLookAndFeel]
Windows Classic---->javax.swing.UIManager$LookAndFeelInfo[Windows Classic com.sun.java.swing.plaf.windows.WindowsClassicLookAndFeel]
下面程序示范了使用Swing组件来创建窗口应用,该窗口里包含了菜单、右键菜单以及基本AWT组件的Swing实现。
import java.awt.BorderLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.InputEvent;
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
{
private JFrame f = new JFrame("测试");
//定义一个按钮,并为之指定图标
private Icon okIcon = new ImageIcon("ico/ok.png");
private JButton ok = new JButton("确认",okIcon);
//定义一个单选按钮,初始处于选中状态
private JRadioButton male = new JRadioButton("男",true);
//定义一个单选按钮,初始处于没有选择状态
private JRadioButton female = new JRadioButton("女",false);
//定义一个ButtonGroup,用于将上面两个JRadioButton组合在一起
private ButtonGroup bg = new ButtonGroup();
//定义一个复选框,初始处于没有选择状态
private JCheckBox married = new JCheckBox("是否已婚?",false);
private String[] colors = new String[]{"红色","绿色","蓝色"};
//定义一个下拉选择框
private JComboBox colorChooser = new JComboBox(colors);
//定义一个列表选择框
private JList colorList = new JList(colors);
//定义一个8行、20列的多行文本域
private JTextArea ta = new JTextArea(8,20);
//定义一个40列的单行文本域
private JTextField name = new JTextField(40);
private JMenuBar mb = new JMenuBar();
private JMenu file = new JMenu("文件");
private JMenu edit = new JMenu("编辑");
//创建"新建"菜单项,并为之指定图标
private Icon newIcon = new ImageIcon("ico/new.png");
private JMenuItem newItem = new JMenuItem("新建",newIcon);
//创建"保存"菜单项,并为之指定图标
private Icon saveIcon = new ImageIcon("ico/save.png");
private JMenuItem saveItem = new JMenuItem("保存",saveIcon);
//创建"退出"菜单项
private Icon exitIcon = new ImageIcon("ico/exit.png");
private JMenuItem exitItem = new JMenuItem("退出",exitIcon);
private JCheckBoxMenuItem autoWrap = new JCheckBoxMenuItem("自动换行 ");
//创建"复制"菜单项,并为之指定图标
private JMenuItem copyItem = new JMenuItem("复制",new ImageIcon("ico/copy.png"));
//创建"粘贴"菜单项,并为之指定图标
private JMenuItem pasteItem = new JMenuItem("粘贴",new ImageIcon("ico/paste.png"));
private JMenu format = new JMenu("格式");
private JMenuItem commentItem = new JMenuItem("注释");
private JMenuItem cancelItem = new JMenuItem("取消注释");
//定义一个右键菜单用于设置程序风格
private JPopupMenu pop = new JPopupMenu();
//用于组合3个风格菜单项的ButtonGroup
private ButtonGroup flavorGroup = new ButtonGroup();
//创建5个单选按钮,用于设定程序的外观风格
private JRadioButtonMenuItem metalItem = new JRadioButtonMenuItem("Metal风格",true);
private JRadioButtonMenuItem nimbusItem = new JRadioButtonMenuItem("Nimbus风格");
private JRadioButtonMenuItem windowsItem = new JRadioButtonMenuItem("Windows风格");
private JRadioButtonMenuItem classicItem = new JRadioButtonMenuItem("Windows经典风格");
private JRadioButtonMenuItem motifItem = new JRadioButtonMenuItem("Motif风格");
//用于执行界面初始化的init方法
public void init()
{
//创建一个装载文本框、按钮的JPanel
JPanel bottom = new JPanel();
bottom.add(name);
bottom.add(ok);
f.add(bottom,BorderLayout.SOUTH);
//创建一个装载了下拉选择框、三个JCheckBox的JPanel
JPanel checkPanel = new JPanel();
checkPanel.add(colorChooser);
bg.add(male);
bg.add(female);
checkPanel.add(male);
checkPanel.add(female);
checkPanel.add(married);
//创建一个垂直排列组件的Box,盛装多行文本域JPanel
Box topLeft = Box.createVerticalBox();
//使用JScrollPane作为普通组件的JViewPort
JScrollPane taJsp = new JScrollPane(ta);
topLeft.add(taJsp);
topLeft.add(checkPanel);
//创建一个水平排列组件的Box,盛装topLeft、colorList
Box top = Box.createHorizontalBox();
top.add(topLeft);
top.add(colorList);
//将top Box容器添加到窗口的中间
f.add(top);
//下面开始组合菜单,并为菜单添加监听器
//为newItem设置快捷键,设置快捷键时要使用大写字母
newItem.setAccelerator(KeyStroke.getKeyStroke(‘N‘,InputEvent.CTRL_MASK));
newItem.addActionListener(new ActionListener(){
@Override
public void actionPerformed(ActionEvent e)
{
ta.append("用户单击了 新建 菜单\n");
}
});
//为file菜单添加菜单项
file.add(newItem);
file.add(saveItem);
file.add(exitItem);
//为edit菜单添加菜单项
edit.add(autoWrap);
//使用addSeparator方法添加菜单分隔线
edit.addSeparator();
edit.add(copyItem);
edit.add(pasteItem);
//为commentItem组件添加提示信息
commentItem.setToolTipText("将程序代码注释起来");
//为format菜单添加菜单项
format.add(commentItem);
format.add(cancelItem);
//使用添加new JMenuItem("-")的方式不能添加菜单分隔符
edit.add(new JMenuItem("-"));
//将format菜单组合到edit菜单中,从而形成二级菜单
edit.add(format);
//将file、edit菜单添加到mb菜单条中
mb.add(file);
mb.add(edit);
//为f窗口设置菜单条
f.setJMenuBar(mb);
//下面开始组合右键菜单,并安装右键菜单
flavorGroup.add(metalItem);
flavorGroup.add(nimbusItem);
flavorGroup.add(windowsItem);
flavorGroup.add(classicItem);
flavorGroup.add(motifItem);
pop.add(metalItem);
pop.add(nimbusItem);
pop.add(windowsItem);
pop.add(classicItem);
pop.add(motifItem);
//为5个风格菜单创建事件监听器
ActionListener flavorListener = new ActionListener()
{
@Override
public void actionPerformed(ActionEvent e)
{
try
{
switch(e.getActionCommand())
{
case "Metal风格":
{
changeFlavor(1);
break;
}
case "Nimbus风格":
{
changeFlavor(2);
break;
}
case "Windows风格":
{
changeFlavor(3);
break;
}
case "Windows经典风格":
{
changeFlavor(4);
break;
}
case "Motif风格":
{
changeFlavor(5);
break;
}
}
}
catch(Exception ee)
{
ee.printStackTrace();
}
}
};
//为5个风格菜单项添加事件监听器
metalItem.addActionListener(flavorListener);
nimbusItem.addActionListener(flavorListener);
windowsItem.addActionListener(flavorListener);
classicItem.addActionListener(flavorListener);
motifItem.addActionListener(flavorListener);
//调用该方法即可设置右键菜单,无须使用事件机制
ta.setComponentPopupMenu(pop);
//设置关闭窗口时,退出程序
f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
f.pack();
f.setVisible(true);
}
//定义一个方法,用于改变界面风格
private void changeFlavor(int flavor) throws Exception
{
switch(flavor)
{
//设置Metal风格
case 1:
{
UIManager.setLookAndFeel("javax.swing.plaf.metal.MetalLookAndFeel");
break;
}
//设置Nimbus风格
case 2:
{
UIManager.setLookAndFeel("javax.swing.plaf.nimbus.NimbusLookAndFeel");
break;
}
//设置windows风格
case 3:
{
UIManager.setLookAndFeel("com.sun.java.swing.plaf.windows.WindowsLookAndFeel");
break;
}
//设置windows经典风格
case 4:
{
UIManager.setLookAndFeel("Classic com.sun.java.swing.plaf.windows.WindowsClassicLookAndFeel");
break;
}
//设置Motif风格
case 5:
{
UIManager.setLookAndFeel("com.sun.java.swing.plaf.motif.MotifLookAndFeel");
break;
}
}
//更新f窗口内顶级容器以及内部所有组件的UI
SwingUtilities.updateComponentTreeUI(f.getContentPane());
//更新mb菜单条以及内部所有组件的UI
SwingUtilities.updateComponentTreeUI(mb);
//更新pop右键菜单以及内部所有组件的UI
SwingUtilities.updateComponentTreeUI(pop);
}
public static void main(String[] args)
{
//设置Swing窗口视野JAVA风格
new SwingComponent().init();
}
}
第12章-Swing编程 --- Swing概述,搜素材,soscw.com
第12章-Swing编程 --- Swing概述
标签：des style class blog code java
原文地址：http://www.cnblogs.com/xinhuaxuan/p/3784491.html