package testsystem;

import java.awt.*;
import javax.swing.*;
import java.awt.event.*;
public class first
{
    public static void main(String[] args) {
    Frame demoFrame=new Frame();
    Label lab=new Label("0.",Label.RIGHT);
    Panel pn=new Panel();
    demoFrame.setSize(400,300);
    demoFrame.setLocation(300,300);
    demoFrame.setLayout(null);
    pn.setLayout(new GridLayout(4,4));
    String s[]={"7","8","9","/","4","5","6","*","1","2","3","-","0",".","=","+"};
    for(int i=0;i<16;i++)
    {
        pn.add(new Button(s[i]));
    }
    lab.setBackground(Color.orange);
    lab.setBounds(20,30,160,20);
    pn.setBounds(20,60,160,80);
    demoFrame.add(lab);
    demoFrame.add(pn);
    demoFrame.setVisible(true);

    }
}