scrollpanedemo.java

来自「java2应用开发指南第一版」· Java 代码 · 共 31 行

//ScrollPaneDemo.java
import java.awt.event.*;
import javax.swing.*;

public class ScrollPaneDemo extends JFrame 
{
	public ScrollPaneDemo() {
		//设置框架窗体标题
		super("JScrollPane Demo");
		ImageIcon img = new ImageIcon("earth.jpg");
		
		JScrollPane sp = new JScrollPane();
		sp.getViewport().add(new JLabel(img));
		getContentPane().add(sp);
		//显示框架窗体
		setSize(300,250);
		setVisible(true);
	}

  //程序的入口方法
	public static void main(String[] args) {
		ScrollPaneDemo frame=new ScrollPaneDemo();
		//设置框架窗体的事件监听(关闭窗体事件)
		frame.addWindowListener(new WindowAdapter(){
			public void windowClosing(WindowEvent e)
			{
				System.exit(0);
			}
		});		
	}
}