import java.awt.*;

public class Calculator extends Frame 
{
	TextField tf;
	Button num1;
	Button num2;
	Button num3;
	Button num4;
	Button num5;
	Button num6;
	Button num7;
	Button num8;
	Button num9;
	Button num0;
	
	
	public Calculator()
	{
		
		tf=new TextField();
		
		BorderLayout bl=new BorderLayout();
		setLayout(bl);
		
		add(tf,"North");
		Panel cp=new Panel();
		
		
		GridLayout gl=new GridLayout(5,6,6,6);
		cp.setLayout(gl);

		num1=new Button("1");
		num2=new Button("2");
		num3=new Button("3");
		num4=new Button("4");
		num5=new Button("5");
		num6=new Button("6");
		num7=new Button("7");
		num8=new Button("8");
		num9=new Button("9");
		num0=new Button("0");
		
		
		cp.add(num1);
		cp.add(num2);
		cp.add(num3);
		cp.add(num4);
		cp.add(num5);
		cp.add(num6);
		cp.add(num7);
		cp.add(num8);
		cp.add(num9);
		cp.add(num0);
		
		add(cp,"Center");
		
		setSize(300,300);
		setVisible(true);
	}
	
	public static void main(String[] args)
	{
		Calculator cl=new Calculator();
	}
	
	

}