替换JFrame窗口左上角图标的方法

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用MyEclipse写了一个JFrame界面，最后发现左上角图标有点碍眼，于是想把它换掉，代码如下：`package com.hbsd.study;

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

public class Test extends JFrame {
public Test(){
super(" Music~");
ImageIcon icon=new ImageIcon(“2.png”);
this.setIconImage(icon.getImage());
this.setBounds(400, 400, 600, 400);
this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
this.setVisible(true);
}
public static void main(String[] args) {
Test test=new Test();
}
}
`