好友列表 swing 代码我抄的新人赚点积分下东西

[java]代码库

import javax.swing.*;
import java.awt.*;
import java.awt.event.*;
import javax.swing.event.*;
import java.util.List;
import javax.swing.JList;
import javax.swing.border.*;
import java.util.Vector;

public class ListRenderingTest
{
	private JFrame mainWin = new JFrame("好友列表");
	private String[] friends = new String[]{
		"孙悟空","弗利萨","皮克大魔王","克林","贝吉塔"
	};
	//定义一个JList对象
	private JList friendsList = new JList(friends);
	public void init(){
		//设置该JList使用ImageCellRenderer作为列表项绘制器
		friendsList.setCellRenderer(new ImageCellRenderer());
		mainWin.add(new JScrollPane(friendsList));
		mainWin.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
		mainWin.pack();
		mainWin.setVisible(true);
	}
	public static void main(String[] args){
		new ListRenderingTest().init();
	}
}
//
class ImageCellRenderer extends JPanel implements ListCellRenderer
{
	private ImageIcon icon ;
	private String name;
	//定义绘制单元格时背景色
	private Color background;
	//前景色
	private Color foreground;

	public Component getListCellRendererComponent(JList list,
		Object value,int index,boolean isSelected,boolean cellHasFocus){
		icon = new ImageIcon("ImageIcon2/"+value+".gif");
		name = value.toString();
		background = isSelected ? list.getSelectionBackground() : list.getBackground();
		foreground = isSelected ? list.getSelectionForeground() : list.getForeground();
		//返回该JPanel对象作为列表项绘制器
		return this;
	}
	//重写paintComponent()方法，改变JPanel的外观
	public void paintComponent(Graphics g){
		int imageWidth = icon.getImage().getWidth(null);
		int imageHeight = icon.getImage().getHeight(null);
		g.setColor(background);
		g.fillRect(0,0,getWidth(),getHeight());
		g.setColor(foreground);
		//绘制好友图标
		g.drawImage(icon.getImage(),getWidth()/2 - imageWidth/2,10,null);
		g.setFont(new Font("SansSerif",Font.BOLD,18));
		//绘制好友用户名
		g.drawString(name,getWidth()/2 - name.length()*10,imageHeight+30);
	}
	//通过该方法来设置该ImageCellRendderer的最佳大小
	public Dimension getPreferredSize(){
		return new Dimension(60,80);
	}
}

[代码运行效果截图]

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