package 常用组件之JButton



import java.awt.event.ActionEvent

import java.awt.event.ActionListener

import java.awt.event.WindowAdapter

import java.awt.event.WindowEvent



import javax.swing.JButton

import javax.swing.JFrame

import javax.swing.JLabel

import javax.swing.JPanel



public class TestJButton {



　　public static void main(String[] args) {

　　　　new MyFrame()

　　}

}



class MyFrame extends JFrame-JButton package of commonly used components　import java.awt.event.ActionEvent　import java.awt.event.ActionListener　import java.awt.event.WindowAdapter　import java.awt.event.WindowEvent　import javax.swing.JButton　import javax.swing.JFrame　import javax.swing.JLabel　import javax.swing.JPanel　public class TestJButton {public static void main (String [] args) {new MyFrame () }} class MyFrame extends JFrame