paneltest.java.bak

java中图形用户界面的设计

//JPanel面板
import javax.swing.*;
import java.awt.*;
public class PanelTest
{
	public static void main(String args[])
	{
		 myFrame Frame1 = new myFrame("JPanel Text");
		 Frame1.show();
	   Frame1.pack();
	}
}

class MyPanel extends JPanel
{
	String str;
	MyPanel(String str)
	{
		this.str = str;
	}
	
	public void paintComponent(Graphics g)
	{
		super.paintComponent(g);
		g.drawString(str,50,50);
	}
}

class myFrame extends JFrame
{
	MyPanel panel1,panel2,panel3;
	myFrame(String str)
	{
		super(str);
		setSize(300,200);
		
		panel1 = new MyPanel("Panel1");
		panel2 = new MyPanel("Panel2");
		panel3 = new MyPanel("Panel3");
		Container Conpane = getContentPane();
		Conpane.add(panel1,BorderLayout.NORTH);
		Conpane.add(panel2,BorderLayout.SOUTH);
		Conpane.add(panel3,BorderLayout.CENTER);
				
		addWindowListener(new WindowAdapter()
		{
			public void windowClosing(WindowEvent e)
			{
				System.exit(0);
			}
		});
	}
}