/**
 *　在面板中繪制字符串
 */

import javax.swing.JFrame;
import java.awt.Toolkit;
import java.awt.Image;
import java.awt.Dimension;
import java.awt.Container;
import java.awt.Graphics;
import javax.swing.JPanel;

public class DrawStringTest
{
	public static void main(String[] args)
	{
		BlankFrame frame = new BlankFrame();
		frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
		frame.show();
	} 
}

/**
 *　這是定制自己的框架
 */
class BlankFrame extends JFrame
{
	private static final int WIDTH = 300;
	private static final int HEIGHT = 200;
	public BlankFrame()
	{
		Container con = getContentPane();//得到了內(nèi)容窗格
		
		Toolkit kit = Toolkit.getDefaultToolkit();
		Dimension screenSize = kit.getScreenSize();
		int width = screenSize.width;
		int height = screenSize.height;
		int x = (width - WIDTH)/2;
		int y = (height - HEIGHT)/2;
		setLocation(x, y);//設(shè)置坐標起點
		setSize(WIDTH, HEIGHT);//設(shè)置框架的大小
		Image image = kit.getImage("duke.gif");// duke.gif為圖像文件名
		setIconImage(image);//設(shè)置框架圖標
		setTitle("這是我美化的框架");
		setResizable(false);
		
		StringPanel panel = new StringPanel();//得到定制的面板
		con.add(panel);//將面板添加到內(nèi)容窗格中
	}
}

/**
 *　這是繼承了JPanel面板類，它重載了繪制的方法
 */
class StringPanel extends JPanel
{
	public static final int WIDTH = 75;
	public static final int HEIGHT = 100;
	
	public void paintComponent(Graphics g)
	{
		super.paintComponent(g);
		g.drawString("我可以顯示出我的文本了", WIDTH, HEIGHT);
	}
}