solved by using java languge in oop in GUI

Note: You can use the following code:

package com.mycompany.mavenproject2;

import java.awt.event.*;

import javax.swing.*;

import java.awt.*;

class NewClass extends JFrame implements ActionListener {

static JFrame f;

static JTextField l;

String s0, s1, s2;

NewClass() {

s0 = s1 = s2 = "";

}

public static void main(String args[]) {

f = new JFrame("calculator");

try {

UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName());

}

catch (Exception e) {

System.err.println(e.getMessage());

}

NewClass c = new NewClass();

l = new JTextField(16);

l.setEditable(false);

JButton b0, b1, b2, b3, b4, b5, b6, b7, b8, b9, ba, bs, bd, bm, be, beq, beq1;

b0 = new JButton("0"); b1 = new JButton("1"); b2 = new JButton("2"); b3 = new JButton("3"); b4 = new JButton("4"); b5 = new JButton("5"); b6 = new JButton("6"); b7 = new JButton("7"); b8 = new JButton("8"); b9 = new JButton("9");

beq1 = new JButton("=");

ba = new JButton("+"); bs = new JButton("-"); bd = new JButton(""); bm = new JButton(""); beq = new JButton("C");

be = new JButton(".");

JPanel p = new JPanel();

bm.addActionListener(c); bd.addActionListener(c); bs.addActionListener(c); ba.addActionListener(c); b9.addActionListener(c); b8.addActionListener(c); b7.addActionListener(c); b6.addActionListener(c); b5.addActionListener(c); b4.addActionListener(c); b3.addActionListener(c); b2.addActionListener(c); b1.addActionListener(c); b0.addActionListener(c); be.addActionListener(c); beq.addActionListener(c); beq1.addActionListener(c);

p.add(l); p.add(ba); p.add(b1); p.add(b2); p.add(b3); p.add(bs); p.add(b4); p.add(b5); p.add(b6); p.add(bm);

p.add(b7); p.add(b8); p.add(b9); p.add(bd); p.add(be); p.add(b0); p.add(beq); p.add(beq1);

f.add(p);

f.setSize(200, 220);

f.show(); }

public void actionPerformed(ActionEvent e) {

String s = e.getActionCommand();

if ((s.charAt(0) >= '0' && s.charAt(0)

s2 = s2 + s; else

s0 = s0 + s;

l.setText(s0 + s1 + s2);

}

else if (s.charAt(0) == 'C') {

s0 = s1 = s2 = "";

l.setText(s0 + s1 + s2);

}

else if (s.charAt(0) == '=') {

double te;

if (s1.equals("+"))

te = (Double.parseDouble(s0) + Double.parseDouble(s2));

else if (s1.equals("-"))

te = (Double.parseDouble(s0) - Double.parseDouble(s2));

else if (s1.equals("/"))

te = (Double.parseDouble(s0) / Double.parseDouble(s2));

else

te = (Double.parseDouble(s0) * Double.parseDouble(s2));

l.setText(s0 + s1 + s2 + "=" + te);

s0 = Double.toString(te);

s1 = s2 = ""; }

else {

if (s1.equals("") || s2.equals(""))

s1 = s; else {

double te;

if (s1.equals("+"))

te = (Double.parseDouble(s0) + Double.parseDouble(s2));

else if (s1.equals("-"))

te = (Double.parseDouble(s0) - Double.parseDouble(s2));

else if (s1.equals("/"))

te = (Double.parseDouble(s0) / Double.parseDouble(s2));

else

te = (Double.parseDouble(s0) * Double.parseDouble(s2));

s0 = Double.toString(te);

s1 = s;

s2 = "";

}

l.setText(s0 + s1 + s2);

}}}

Generally, an unexpected or unwanted event which can occur either at compile-time or run-time in application code that can interrupt execution of program is known as exceptions in Java. Use exceptions to develop a simple calculator to handle all unwanted events during compile time as well as during execution of the program. You are required to use Java Swing components to create a simple calculator with only +, -, /, * operations and then implement exception handling to the program 9