黑马程序员+对Java中匿名内部类总结

来源：互联网发布：办公室内设计软件编辑：程序博客网时间：2024/04/29 01:00

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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 snew 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 stubdialog.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 stubSystem.out.println("返回");}});set=new Button("设置");set.addActionListener(new ActionListener(){public void actionPerformed(ActionEvent e) {// TODO Auto-generated method stubSystem.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

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