example_5_1.java

来自「主要是对于JAVA的编程的基本语言 希望能够帮得上你。」· Java 代码 · 共 37 行

package swing;

import java.awt.Dimension;
import java.awt.FlowLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;

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

public class Example_5_1 {

	static JLabel lblWelcome;
	
	public static void main(String[] args) {
		JFrame frame=new JFrame("我的Swing程序");
		JButton btnOK=new JButton("确定");
		JButton btnCancel=new JButton("取消");
		lblWelcome=new JLabel("欢迎使用Swing编写窗口程序");
		frame.getContentPane().add(btnOK,"North");
		frame.getContentPane().add(lblWelcome);
		frame.getContentPane().add(btnCancel,"South");
		//frame.getContentPane().setLayout(new FlowLayout());
		frame.setSize(new Dimension(250,200));
		frame.setVisible(true);
		
		//注册监听器并编写事件处理代码
		btnOK.addActionListener(new ActionListener(){
			public void actionPerformed(ActionEvent e) {				
				lblWelcome.setText("Welcome to our class!");
			}			
		});
	}

}