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.....

package hello;
import javax.swing.*;
import project.readerListen;
import java.awt.*;
import java.awt.event.*;
class WindGrid extends  JFrame{
    
    JTextField text;
    ActionListener listener;    
    
    public WindGrid(String title)
    {
      setTitle(title);
      init();
      setBounds(40,50,260,270);
      setVisible(true);    
      setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    }    
    
    void init()
    {
      text = new JTextField(10);
      listener = new ReaderListen();  //自定义的 那个类
      setLayout(new FlowLayout());
      text.addActionListener(listener);
      add(new Label("输入蚊子 "));
      add(text);
    }

}
public class test {
    public static void main(String args[])
    {
      new WindGrid("第一个窗口");    
    }
}

package hello;

import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import javax.swing.*;
public class ReaderListen extends JFrame implements ActionListener 
{

    public void actionPerformed(ActionEvent e)
    {
    // TODO Auto-generated method stub    
        JFrame myjframe;
        myjframe = new JFrame();
        JTextArea mytest;
        mytest =new JTextArea(e.getActionCommand(),8,9);
        myjframe.add(mytest);
        myjframe.setBounds(20, 30, 200, 300);
        myjframe.setVisible(true);
        
    }
}