关于创建图标的程序。新手求教

[疯子霆]

import java.awt.Component;
import java.awt.Container;
import java.awt.Graphics;

import javax.swing.Icon;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.SwingConstants;

public class DrawIcon implements Icon {
private int width;
private int height;
public int getIconHeight(){
return this.height;
}
public int getIconWidth(){
return this.width;
}
public DrawIcon(int width,int height){
this.width=width;
this.height=height;
}

public void paintIcon(Component arg0,Graphics arg1,int x,int y){
arg1.fillOval(x, y, width, height);
}
public static void main(String[] args) {
// TODO 自动生成的方法存根
DrawIcon icon=new DrawIcon(15,15);
JLabel j=new JLabel("测试",icon,SwingConstants.CENTER);
JFrame jf=new JFrame();
Container c=jf.getContentPane();
// 后边再怎么写？ 调用DrawIcon 类 实现程序。。不会了。

}

}