//BorderLayout布局
//button
import javax.swing.*;
import java.awt.event.*;
import java.awt.*;
public class buttonclass
{
	public static void main(String args[])
	{
		 myFrame Frame1 = new myFrame("My first frame");
		 Frame1.show();
	   Frame1.pack();
	}
}

class myFrame extends JFrame
{
	JButton button1 = new JButton("North");
	JButton button2 = new JButton("south");
	JButton button3 = new JButton("west");
	JButton button4 = new JButton("east");
	JButton button5 = new JButton("center");
	myFrame(String str)
	{
		super(str);
		setSize(300,200);
		
		Container Conpane = getContentPane();
		Conpane.add(button1,BorderLayout.NORTH);
		Conpane.add(button2,BorderLayout.SOUTH);
		Conpane.add(button3,BorderLayout.WEST);
		Conpane.add(button4,BorderLayout.EAST);
		Conpane.add(button5,BorderLayout.CENTER);
		
		addWindowListener(new WindowAdapter()
		{
			public void windowClosing(WindowEvent e)
			{
				System.exit(0);
			}
		});
	}
}