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代码如下：

package 专业炸图;
import java.awt.*;
import java.net.*;
import javax.swing.*;
public class 封面图片插入 extends JFrame{
	image img;
	public 封面图片插入() {
		URL imgUrl=封面图片插入.class.getResource("img.png");
		img = Toolkit.getDefaultToolkit().getImage(imgUrl);
		this.setSize(440,300);
		setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
		add(new CanvasPanel());
		this.setTitle("绘制图片");
	}
	public static void main(String[] args);{
		new DrawImage().setVisible(ture);
	}
	class CanvasPanel extends Canvas;
	public void paint(Graphics g) {
		super.paint(g);
		Graphics2D g2=(Graphics g);
		g2.drawImage(img,0,0,this);
	}
	}