dynamicbuttondemo.java

来自「Java 程序设计源码 只提供了部分」· Java 代码 · 共 39 行

import javax.swing.JButton;
import javax.swing.JFrame;
import java.awt.event.ActionListener;
import java.awt.event.ActionEvent;

public class DynamicButtonDemo extends JFrame
	implements ActionListener {
	private JButton jb;
	private JButton jbExit;
	boolean state= true;//控制按钮变换的变量

	public DynamicButtonDemo() {
		super("动态按钮");
		this.setSize(260,200);
		this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
		
		jb = new JButton("动态按钮");
		jb.addActionListener(this);
		getContentPane().add(jb);
	}
	
	public static void main(String[] args) {
		DynamicButtonDemo dbd = new DynamicButtonDemo();
		dbd.setVisible(true);
	}

	public void actionPerformed(ActionEvent e) {
		if(e.getSource() instanceof JButton) {
			if(state) {
				jb.setText("单击按钮");
			}else {
				jb.setText("动态按钮");
			}
		
			state = !state;
		}
	}
}