jlableusedemo.java

JAVA编程思想源代码 值得一下 很难找的

package chapter11;

import java.awt.GridLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;

import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JLabel;

public class JLableUseDemo extends JFrame {

	private static JButton jbt1, jbt2;

	private static JLabel jla;

	public JLableUseDemo() {
		jbt1 = new JButton("button1");
		jbt2 = new JButton("button2");
		jla = new JLabel("TEXT display");
		
		jbt1.addActionListener(new ActionListener() {

			public void actionPerformed(ActionEvent e) {

				jla.setText("press button1");

			}

		});
		jbt2.addActionListener(new ActionListener() {

			public void actionPerformed(ActionEvent e) {
				jla.setText("press button2");

			}

		});
		setLayout(new GridLayout(3, 1));
		add(jla);
		add(jbt1);
		add(jbt2);

	}

	public static void main(String[] args) {

		JLableUseDemo jlud = new JLableUseDemo();
		jlud.setSize(300, 300);
		jlud.setVisible(true);
		jlud.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
	}

}