Java加载图片抛出异常

Question

Java加载图片显示Exception in thread "AWT-EventQueue-0" java.lang.NullPointerException: Cannot invoke "java怎么解决？无论是相对路径还是绝对路径都不行

package draw;

import javax.swing.*;
import java.awt.*;


public class DrawCircle extends JFrame{//JFrame对应窗口，可以理解成是一个画框
    //定义一个面板
    private myPanel mp =null;

    public static void main(String[] args) {
        new DrawCircle();

    }
    public DrawCircle(){
        mp=new myPanel();
        this.add(mp);
        this.setSize(1000,1000);
        this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        this.setVisible(true);

    }

}

//1、先定义一个面板MyPanel,继承JPanel类
class myPanel extends JPanel{
    @Override
    public void paint(Graphics g) {
        super.paint(g);//调用父类的方法完成初始化
        Image image = Toolkit.getDefaultToolkit().getImage(myPanel.class.getResource("/pg2.jpg"));
        g.drawImage(image,10,10,870,490,this);

    }
}

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Answer 1

小细节