Java GUI 绘制

import java.awt.Graphics;
import java.awt.Image;

import javax.swing.ImageIcon;
import javax.swing.JFrame;
import javax.swing.JPanel;

public class SolidRectangle extends JPanel {
private Image img=new ImageIcon("image/背景.png").getImage();
public static void main(String[] a) {
JFrame f = new JFrame();
f.setTitle("绘制图片");
f.setSize(400, 400);
f.add(new SolidRectangle());
f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
f.setVisible(true);
}
public void paint(Graphics g) {
//给模版绘制图片背景
g.drawImage(img, 0, 0, null);
g.drawString("给模版绘制图片背景", 100, 100);
}
}

运行结果：