程式碼示例：

import java.awt.Graphics;

import java.awt.Image;

import javax.swing.JPanel;

public class ImgPanel extends JPanel {

private static final long serialVersionUID = 1L;

private Image imgBack;

private boolean backResize;

/**

* 構造方法

* @param arg0 背景圖片 Image 類

* @param arg1 背景圖片是否根據Panel大小自行縮放

*/

public ImgPanel(Image arg0, boolean arg1) {

imgBack = arg0;

backResize = arg1;

}

protected void paintComponent(Graphics g) {

if (backResize) {

g.drawImage(imgBack, 0, 0, getWidth(), getHeight(), null);

} else {

g.drawImage(imgBack, (getWidth()-imgBack.getWidth(null))/2, (getHeight()-imgBack.getHeight(null))/2, null);

}

}

}