最简单的图标创建Java

package StudyGUI;

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

public class TextIcon extends  JFrame implements Icon {
    private int width;
    private int height;
     public TextIcon(){}//设置无参构造
    //是仙女有参构造时应该将参数传上来
    public TextIcon(int width,int height){
         this.width = width;
         this.height = height;
    }//定义有参构造
    public void init(){
      TextIcon textIcon = new TextIcon(15,15);
      JLabel label = new JLabel("这是一个图标",textIcon,SwingConstants.CENTER);
      Container container = getContentPane();
      container.add(label);
      this.setVisible(true);
      this.setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);
    }
    @Override
    public void paintIcon(Component c, Graphics g, int x, int y) {
        g.fillOval(x,y,width,height);
    }

    @Override
    public int getIconWidth() {
        return this.width;
    }

    @Override
    public int getIconHeight() {
        return this.height;
    }

    public static void main(String[] args) {
    new TextIcon().init();
    }
}