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在学习图形化界面时，我发现监听机制中事件处理时用到匿名内部类，感觉在前面的基础学习中也用到过，我又回去查了一下，果然在Java面向对象中出现过，为此我用思维导图及代码对匿名内部类作了一些总结，由于本人能力有限。可能会有一些不完善或错误的地方，敬请指正，谢谢！
图1 匿名内部类
图2 匿名内部类使用情况
图3 匿名内部类原则
匿名内部类实例
public class GUI {
private Frame frame;
private Panel panel1;
private Panel panel2;
private Button start;
private Button ret;
private Button set;
private Dialog dialog;
private Button ok;
public static void main(String[] args) {
// TODO Auto-generated method s
new GUI();
}
//创建图形化界面
GUI(){
frame=new Frame("萍");
frame.setBounds(900, 200, 300, 400);
panel1=new Panel();
panel1.setBackground(Color.RED);
panel2=new Panel();
panel2.setBackground(Color.BLUE);
frame.add(panel1, BorderLayout.NORTH);
frame.add(panel2, BorderLayout.CENTER);
panel1.setLayout(new FlowLayout());
start=new Button("开始");
start.addActionListener(new ActionListener(){
public void actionPerformed(ActionEvent e) {
// TODO Auto-generated method stub
dialog=new Dialog(frame,"游戏开始",true);
dialog.setLayout(new FlowLayout());
dialog.setBounds(800, 400, 100, 100);
ok=new Button("确定");
dialog.add(ok);
dialog.addWindowListener(new WindowAdapter(){//匿名内部类
public void windowClosing(WindowEvent e){
dialog.setVisible(false);
}
});
ok.addActionListener(new ActionListener(){//匿名内部类
public void actionPerformed(ActionEvent e) {
// TODO Auto-generated method stub
dialog.setVisible(false);
}});
dialog.setVisible(true);
}
});
//可见性必须最后设置
ret=new Button("返回");
ret.addActionListener(new ActionListener(){//匿名内部类
public void actionPerformed(ActionEvent e) {
// TODO Auto-generated method stub
System.out.println("返回");
}
});
set=new Button("设置");
set.addActionListener(new ActionListener(){
public void actionPerformed(ActionEvent e) {
// TODO Auto-generated method stub
System.out.println("设置");
}
});
panel1.add(start);
panel1.add(ret);
panel1.add(set);
frame.addWindowListener(new WindowAdapter(){
public void windowClosing(WindowEvent e){
System.exit(0);
}
});//注册事件监听器
frame.setVisible(true);
}
}
运行结果
