初学java之触发响应事件举例子

设置一个触发响应事件?

比如消息框.....

 1 package hello;

 2 import javax.swing.*;

 3 import project.readerListen;

 4 import java.awt.*;

 5 import java.awt.event.*;

 6 class WindGrid extends  JFrame{

 7

 8     JTextField text;

 9     ActionListener listener;

10

11     public WindGrid(String title)

12     {

13       setTitle(title);

14       init();

15       setBounds(40,50,260,270);

16       setVisible(true);

17       setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

18     }

19

20     void init()

21     {

22       text = new JTextField(10);

23       listener = new ReaderListen();  //自定义的 那个类

24       setLayout(new FlowLayout());

25       text.addActionListener(listener);

26       add(new Label("输入蚊子 "));

27       add(text);

28     }

29

30 }

31 public class test {

32     public static void main(String args[])

33     {

34       new WindGrid("第一个窗口");

35     }

36 }

 1 package hello;

 2

 3 import java.awt.event.ActionEvent;

 4 import java.awt.event.ActionListener;

 5 import javax.swing.*;

 6 public class ReaderListen extends JFrame implements ActionListener

 7 {

 8

 9     public void actionPerformed(ActionEvent e)

10     {

11     // TODO Auto-generated method stub

12         JFrame myjframe;

13         myjframe = new JFrame();

14         JTextArea mytest;

15         mytest =new JTextArea(e.getActionCommand(),8,9);

16         myjframe.add(mytest);

17         myjframe.setBounds(20, 30, 200, 300);

18         myjframe.setVisible(true);

19

20     }

21 }