// Calculator 

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

public class Calculate1 extends JFrame 
{
	JButton button[];
	public Calculate1(String title)
	{
		setTitle(title);
		Container cp = getContentPane();
		cp.setLayout(new GridLayout(5,4,6,6)); 
		button = new JButton[13];
		
		for(int i=1;i<10;i+=1)
		{
			button[i] = new JButton(Integer.toString(i+1));
			cp.add(button[i]);
		}
		
		button[10] = new JButton("+");
		button[11] = new JButton("-");
		
		button[12] = new JButton("Clear");
		
		cp.add(button[10]);	
		cp.add(button[11]);
		cp.add(button[12]);
		
		setSize(150,200);
		setVisible(true);
		
	}
	
	public static void main(String args[])
	{
		Calculate1 fr = new Calculate1("Calculate");
		fr.addWindowListener(new WindowAdapter()
		{
			public void windowClosing(WindowEvent e)
			{
				System.exit(0);
			}
		});
	}
}