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Scientific Calculator Using Java , swing and awt with source code

Scientific Calculator using java

Introduction :

The Scientific Calculator is a Java-based desktop application designed to handle a wide range of mathematical operations, including basic arithmetic and advanced functions like trigonometry, logarithms, and square roots. This software aims to provide users with a reliable and efficient tool for performing calculations, whether for academic, professional, or personal use. It features a simple, user-friendly interface, supports error handling, and ensures precise results. The project is ideal for students, professionals, or anyone who needs a practical, easy-to-use calculator.

Features:

  • Basic Arithmetic Operations: Handles addition, subtraction, multiplication, and division for everyday calculations.
  • Advanced Mathematical Functions: Supports trigonometric functions (sine, cosine, tangent), logarithms, square roots, and more.
  • User-Friendly Interface: A clean and intuitive design for easy navigation, making it accessible to all users.
  • Error Handling: Provides real-time feedback for invalid inputs, such as division by zero or incorrect formulas.
  • Precision: Delivers accurate results, ideal for scientific calculations and complex mathematical problems.
  • Customizable: Can be easily modified to add more advanced features as needed.

Required Packages

This Java project utilizes the following modules and packages:

  1. java.awt: Provides classes for creating graphical user interface (GUI) elements, such as layouts, components, and containers.

  2. javax.swing: Contains classes for building GUI components like buttons, text areas, and windows, specifically designed for modern Java desktop applications.

  3. java.awt.event: Includes classes for handling events, such as button clicks or user input actions.

  4. java.math: Offers classes like BigInteger and BigDecimal for precise mathematical operations, used in this program for handling factorial calculations.

  5. java.text: Provides classes for formatting and parsing numbers, text, and other data, used here for displaying large factorial results in a readable format.

How to Run the Code:

To run the Calculator.java code, follow these steps:

Prerequisites

  1. Java Development Kit (JDK): Ensure the JDK is installed on your system.

    • To check, open a terminal/command prompt and run:
      java -version

      If it’s not installed, download it from Oracle’s Java website or an open-source version like OpenJDK.

  2. Text Editor or IDE: Use a text editor (e.g., Notepad++) or an IDE (e.g., IntelliJ IDEA, Eclipse, or VS Code) to view and edit the code if needed.

Steps to Compile and Run the Program

1. Save the Code

  • Save the provided code in a file named Calculator.java. The filename must match the class name (Calculator) for successful compilation.

2. Open Terminal/Command Prompt

  • Navigate to the directory where the Calculator.java file is saved.

3. Compile the Code

  • Run the following command to compile the Java file:
    javac Calculator.java
    • If there are no errors, a Calculator.class file will be generated in the same directory.

4. Run the Program

  • Execute the compiled program with this command:
    java Calculator
    • A graphical user interface (GUI) calculator will appear.

How to Use the Calculator

  1. Use the GUI buttons to perform calculations:

    • Basic operations: Addition (+), subtraction (-), multiplication (*), division (/).
    • Advanced functions: Trigonometry (sin, cos, tan), logarithms (ln, log), factorial (x!), and more.

  2. View results in the text area at the top.

 

Code Explanation :

1. Imports

  • The program imports packages for GUI creation (java.awt, javax.swing), event handling (java.awt.event), and advanced math operations (java.math, java.text).

2. Class Declaration

  • The Calculator class:
    • Extends JFrame to create the main calculator window.
    • Implements ActionListener to respond to button clicks.

3. GUI Layout

  • Panels (JPanel[] row):

    • Used to group the display and buttons for better organization.
    • Row 0 is for the display, and rows 1–7 hold buttons.

  • Buttons (JButton[] button):

    • 35 buttons are dynamically created for numbers, operations, and functions.
    • Each button gets text from buttonString and is set to listen for click events via addActionListener.

  • Display (JTextArea display):

    • Shows input/output text.
    • Positioned at the top and set to be uneditable.

4. Constructor (Calculator())

  • Sets up the GUI window:
    • Defines size, layout (GridLayout), and look (NimbusLookAndFeel).
  • Dynamically initializes panels and buttons, then adds them to the window.

5. Helper Methods

  1. setDesign(): Applies a modern look to the GUI.
  2. clear(): Resets the display and variables.
  3. del(): Deletes the last digit or character in the display.
  4. getFactorial(): Computes factorial using BigInteger for large values.
  5. getResult(): Executes the selected operation and updates the display.

6. Event Handling

  • The actionPerformed method handles button clicks:
    • Unary Operations: sin, cos, tan, ln, etc., work on the current input.
    • Binary Operations: Addition, subtraction, multiplication, division, etc., store operands and await the second input.
    • Special Operations: Factorial (x!), reciprocal (1/x), and trigonometric functions are calculated immediately.
    • The equal button (=) calls getResult() to compute and display the final result.

7. Execution

  • Main Method:
    • Creates an instance of Calculator, which automatically initializes and displays the GUI.

Source Code:

				
					import java.awt.EventQueue;

import javax.swing.JFrame;
import javax.swing.JTextField;
import javax.swing.JLabel;
import java.awt.Font;
import java.awt.Color;
import javax.swing.JButton;
import java.awt.event.ActionListener;
import java.awt.event.ActionEvent;
import javax.swing.JSeparator;
import javax.swing.JRadioButton;
import javax.swing.JRadioButtonMenuItem;
import javax.swing.ButtonGroup;
import javax.swing.JToggleButton;

import java.awt.BorderLayout;
import java.awt.Component;
import javax.swing.SwingConstants;

public class calculator {

	private JFrame frame;
	private JTextField textField;
	
	double first;
	double second;
	double result;
	String operation;
	String answer;
	private final ButtonGroup buttonGroup = new ButtonGroup();
	

	/**
	 * Launch the application.
	 */
	public static void main(String[] args) {
		EventQueue.invokeLater(new Runnable() {
			public void run() {
				try {
					calculator window = new calculator();
					window.frame.setVisible(true);
				} catch (Exception e) {
					e.printStackTrace();
				}
			}
		});
	}

	/**
	 * Create the application.
	 */
	public calculator() {
		initialize();
	}

	/**
	 * Initialize the contents of the frame.
	 */
	private void initialize() {
		frame = new JFrame();
		frame.getContentPane().setFont(new Font("Tahoma", Font.BOLD, 20));
		frame.getContentPane().setLayout(null);
		
		JLabel lblNewLabel = new JLabel("SCIENTIFIC CALCULATOR");
		lblNewLabel.setFont(new Font("Tahoma", Font.BOLD, 22));
		lblNewLabel.setBounds(40, 10, 313, 57);
		frame.getContentPane().add(lblNewLabel);
		
		textField = new JTextField();
		textField.setEnabled(false);
		textField.setFont(new Font("Tahoma", Font.BOLD, 21));
		textField.setBounds(10, 77, 366, 89);
		frame.getContentPane().add(textField);
		textField.setColumns(10);
		
		JButton btnXy = new JButton("X^Y");
		btnXy.setEnabled(false);
		btnXy.addActionListener(new ActionListener() {
			public void actionPerformed(ActionEvent e) {
				first=Double.parseDouble(textField.getText());
				textField.setText("");
				operation="X^Y";
			}
		});
		btnXy.setFont(new Font("Tahoma", Font.PLAIN, 15));
		btnXy.setBounds(10, 298, 64, 37);
		frame.getContentPane().add(btnXy);
		
		JButton btnX = new JButton("X^3");
		btnX.setEnabled(false);
		btnX.addActionListener(new ActionListener() {
			public void actionPerformed(ActionEvent e) {
				double a =(Double.parseDouble(textField.getText()));
				a=a*a*a;
				textField.setText("");
				textField.setText(textField.getText()+a);
			}
		});
		btnX.setFont(new Font("Tahoma", Font.PLAIN, 15));
		btnX.setBounds(10, 343, 64, 37);
		frame.getContentPane().add(btnX);
		
		JButton bcc = new JButton("X^2");
		bcc.setEnabled(false);
		bcc.addActionListener(new ActionListener() {
			public void actionPerformed(ActionEvent e) {
				double a =(Double.parseDouble(textField.getText()));
				a=a*a;
				textField.setText("");
				textField.setText(textField.getText()+a);
			}
		
		});
		bcc.setFont(new Font("Tahoma", Font.PLAIN, 15));
		bcc.setBounds(10, 390, 64, 37);
		frame.getContentPane().add(bcc);
		
		JButton btt = new JButton("n!");
		btt.setEnabled(false);
		btt.addActionListener(new ActionListener() {
			public void actionPerformed(ActionEvent e) {
				double a=Double.parseDouble(textField.getText());
				double fact=1;
				while(a!=0)
				{
					fact=fact*a;
					a--;
				}
				textField.setText("");
				textField.setText(textField.getText()+fact);	
				
			}
		});
		btt.setFont(new Font("Tahoma", Font.PLAIN, 21));
		btt.setBounds(10, 437, 64, 37);
		frame.getContentPane().add(btt);
		
		JButton btnPlusMinus = new JButton("+/-");
		btnPlusMinus.setEnabled(false);
		btnPlusMinus.addActionListener(new ActionListener() {
			public void actionPerformed(ActionEvent e) {
				double a=Double.parseDouble(String.valueOf(textField.getText()));
				a=a*(-1);
				textField.setText(String.valueOf(a)); // String.valueOf gives integer value from string
			}
		});
		btnPlusMinus.setFont(new Font("Tahoma", Font.PLAIN, 19));
		btnPlusMinus.setBounds(10, 484, 64, 37);
		frame.getContentPane().add(btnPlusMinus);
		
		JButton btnEx = new JButton("e^x");
		btnEx.setEnabled(false);
		btnEx.addActionListener(new ActionListener() {
			public void actionPerformed(ActionEvent e) {
				double a =Math.exp(Double.parseDouble(textField.getText()));
				textField.setText("");
				textField.setText(textField.getText()+a);
			}
		});
		btnEx.setFont(new Font("Tahoma", Font.PLAIN, 15));
		btnEx.setBounds(84, 209, 64, 37);
		frame.getContentPane().add(btnEx);
		
		JButton btnLog = new JButton("Log");
		btnLog.setEnabled(false);
		btnLog.addActionListener(new ActionListener() {
			public void actionPerformed(ActionEvent e) {
				double a =Math.log(Double.parseDouble(textField.getText()));
				textField.setText("");
				textField.setText(textField.getText()+a);
			}
		});
		btnLog.setFont(new Font("Tahoma", Font.PLAIN, 17));
		btnLog.setBounds(84, 251, 64, 37);
		frame.getContentPane().add(btnLog);
		
		JButton btnPercent = new JButton("%");
		btnPercent.setEnabled(false);
		btnPercent.addActionListener(new ActionListener() {
			public void actionPerformed(ActionEvent e) {
				first=Double.parseDouble(textField.getText());
				textField.setText("");
				operation="%";          //holds the operation to be done
			}
		});
		btnPercent.setFont(new Font("Tahoma", Font.BOLD, 21));
		btnPercent.setBounds(84, 298, 64, 37);
		frame.getContentPane().add(btnPercent);
		
		JButton btn7 = new JButton("7");
		btn7.setEnabled(false);
		btn7.addActionListener(new ActionListener() {
			public void actionPerformed(ActionEvent e) {
				String number=textField.getText()+btn7.getText();//to get the number from the user
				textField.setText(number);//setting text to next field
			}
		});
		btn7.setFont(new Font("Tahoma", Font.BOLD, 21));
		btn7.setBounds(84, 343, 64, 37);
		frame.getContentPane().add(btn7);
		
		JButton btn4 = new JButton("4");
		btn4.setEnabled(false);
		btn4.addActionListener(new ActionListener() {
			public void actionPerformed(ActionEvent e) {
				String number=textField.getText()+btn4.getText();//to get the number from the user
				textField.setText(number);//setting text to next field
			}
		});
		btn4.setFont(new Font("Tahoma", Font.BOLD, 21));
		btn4.setBounds(84, 390, 64, 37);
		frame.getContentPane().add(btn4);
		
		JButton btn1 = new JButton("1");
		btn1.setEnabled(false);
		btn1.addActionListener(new ActionListener() {
			public void actionPerformed(ActionEvent e) {
				String number=textField.getText()+btn1.getText();//to get the number from the user
				textField.setText(number);//setting text to next field
			}
		});
		btn1.setFont(new Font("Tahoma", Font.BOLD, 21));
		btn1.setBounds(84, 437, 64, 37);
		frame.getContentPane().add(btn1);
		
		JButton btn0 = new JButton("0");
		btn0.setEnabled(false);
		btn0.addActionListener(new ActionListener() {
			public void actionPerformed(ActionEvent e) {
				String number=textField.getText()+btt.getText();//to get the number from the user
				textField.setText(number);//setting text to next field
			}
		});
		btn0.setFont(new Font("Tahoma", Font.BOLD, 21));
		btn0.setBounds(84, 484, 138, 37);
		frame.getContentPane().add(btn0);
		
		JButton btnSin = new JButton("Sin");
		btnSin.setEnabled(false);
		btnSin.addActionListener(new ActionListener() {
			public void actionPerformed(ActionEvent e) {
				
				double a =Math.sin(Double.parseDouble(textField.getText()));
				textField.setText("");
				textField.setText(textField.getText()+a);
			}
		});
		btnSin.setFont(new Font("Tahoma", Font.PLAIN, 17));
		btnSin.setBounds(158, 209, 64, 37);
		frame.getContentPane().add(btnSin);
		
		JButton btnSinh = new JButton("Sinh");
		btnSinh.setEnabled(false);
		btnSinh.addActionListener(new ActionListener() {
			public void actionPerformed(ActionEvent e) {
				double a =Math.sinh(Double.parseDouble(textField.getText()));
				textField.setText("");
				textField.setText(textField.getText()+a);
			}
		});
		btnSinh.setFont(new Font("Tahoma", Font.PLAIN, 16));
		btnSinh.setBounds(158, 252, 64, 37);
		frame.getContentPane().add(btnSinh);
		
		JButton btnClear = new JButton("C");
		btnClear.setEnabled(false);
		btnClear.addActionListener(new ActionListener() {
			public void actionPerformed(ActionEvent e) {
				textField.setText(null);//we want our text field to be null when we select clear button
			}
		});
		btnClear.setFont(new Font("Tahoma", Font.BOLD, 21));
		btnClear.setBounds(158, 298, 64, 37);
		frame.getContentPane().add(btnClear);
		
		JButton btn8 = new JButton("8");
		btn8.setEnabled(false);
		btn8.addActionListener(new ActionListener() {
			public void actionPerformed(ActionEvent e) {
				String number=textField.getText()+btn8.getText();//to get the number from the user
				textField.setText(number);//setting text to next field
			}
		});
		btn8.setFont(new Font("Tahoma", Font.BOLD, 21));
		btn8.setBounds(158, 343, 64, 37);
		frame.getContentPane().add(btn8);
		
		JButton btn5 = new JButton("5");
		btn5.setEnabled(false);
		btn5.addActionListener(new ActionListener() {
			public void actionPerformed(ActionEvent e) {
				String number=textField.getText()+btn5.getText();//to get the number from the user
				textField.setText(number);//setting text to next field
			}
		});
		btn5.setFont(new Font("Tahoma", Font.BOLD, 21));
		btn5.setBounds(158, 390, 64, 37);
		frame.getContentPane().add(btn5);
		
		JButton btn2 = new JButton("2");
		btn2.setEnabled(false);
		btn2.addActionListener(new ActionListener() {
			public void actionPerformed(ActionEvent e) {
				String number=textField.getText()+btn2.getText();//to get the number from the user
				textField.setText(number);//setting text to next field
			}
		});
		btn2.setFont(new Font("Tahoma", Font.BOLD, 21));
		btn2.setBounds(158, 437, 64, 37);
		frame.getContentPane().add(btn2);
		
		JButton btnCos = new JButton("Cos");
		btnCos.setEnabled(false);
		btnCos.addActionListener(new ActionListener() {
			public void actionPerformed(ActionEvent e) {
				double a =Math.cos(Double.parseDouble(textField.getText()));
				textField.setText("");
				textField.setText(textField.getText()+a);
			}
		});
		btnCos.setFont(new Font("Tahoma", Font.PLAIN, 17));
		btnCos.setBounds(232, 209, 64, 37);
		frame.getContentPane().add(btnCos);
		
		JButton btnCosh = new JButton("Cosh");
		btnCosh.setEnabled(false);
		btnCosh.addActionListener(new ActionListener() {
			public void actionPerformed(ActionEvent e) {
				double a =Math.cosh(Double.parseDouble(textField.getText()));
				textField.setText("");
				textField.setText(textField.getText()+a);
			}
		});
		btnCosh.setFont(new Font("Tahoma", Font.PLAIN, 14));
		btnCosh.setBounds(232, 252, 64, 37);
		frame.getContentPane().add(btnCosh);
		
		JButton btnBackSpace = new JButton("\uF0E7");
		btnBackSpace.setEnabled(false);
		btnBackSpace.addActionListener(new ActionListener() {
			public void actionPerformed(ActionEvent e) {
				String backSpace=null;
				
				if(textField.getText().length()>0)  //checking if length of input string is >than 0
				{
					StringBuilder str= new StringBuilder(textField.getText());
					str.deleteCharAt(textField.getText().length()-1);    //reducing string size by 1
					backSpace=str.toString();                            //display new string to text field
					textField.setText(backSpace);                        //change B to backspace symbol
					
				}
			}
		});
		btnBackSpace.setFont(new Font("Wingdings", Font.PLAIN, 21));
		btnBackSpace.setBounds(232, 298, 64, 37);
		frame.getContentPane().add(btnBackSpace);
		
		JButton btn9 = new JButton("9");
		btn9.setEnabled(false);
		btn9.addActionListener(new ActionListener() {
			public void actionPerformed(ActionEvent e) {
				String number=textField.getText()+btn9.getText();//to get the number from the user
				textField.setText(number);//setting text to next field
			}
		});
		btn9.setFont(new Font("Tahoma", Font.BOLD, 21));
		btn9.setBounds(232, 343, 64, 37);
		frame.getContentPane().add(btn9);
		
		JButton btn6 = new JButton("6");
		btn6.setEnabled(false);
		btn6.addActionListener(new ActionListener() {
			public void actionPerformed(ActionEvent e) {
				String number=textField.getText()+btn6.getText();//to get the number from the user
				textField.setText(number);//setting text to next field
			}
		});
		btn6.setFont(new Font("Tahoma", Font.BOLD, 21));
		btn6.setBounds(232, 390, 64, 37);
		frame.getContentPane().add(btn6);
		
		JButton btn3 = new JButton("3");
		btn3.setEnabled(false);
		btn3.addActionListener(new ActionListener() {
			public void actionPerformed(ActionEvent e) {
				String number=textField.getText()+btn3.getText();//to get the number from the user
				textField.setText(number);//setting text to next field
			}
		});
		btn3.setFont(new Font("Tahoma", Font.BOLD, 21));
		btn3.setBounds(232, 437, 64, 37);
		frame.getContentPane().add(btn3);
		
		JButton btndot = new JButton(".");
		btndot.setEnabled(false);
		btndot.addActionListener(new ActionListener() {
			public void actionPerformed(ActionEvent e) {
				String number=textField.getText()+btndot.getText();//to get the number from the user
				textField.setText(number);//setting text to next field
			}
		});
		btndot.setFont(new Font("Tahoma", Font.BOLD, 24));
		btndot.setBounds(232, 484, 64, 37);
		frame.getContentPane().add(btndot);
		
		JButton btnTan = new JButton("Tan");
		btnTan.setEnabled(false);
		btnTan.addActionListener(new ActionListener() {
			public void actionPerformed(ActionEvent e) {
				double a =Math.tan(Double.parseDouble(textField.getText()));
				textField.setText("");
				textField.setText(textField.getText()+a);
			}
		});
		btnTan.setFont(new Font("Tahoma", Font.PLAIN, 17));
		btnTan.setBounds(306, 209, 64, 37);
		frame.getContentPane().add(btnTan);
		
		JButton btnTanh = new JButton("Tanh");
		btnTanh.setEnabled(false);
		btnTanh.addActionListener(new ActionListener() {
			public void actionPerformed(ActionEvent e) {
				double a =Math.tanh(Double.parseDouble(textField.getText()));
				textField.setText("");
				textField.setText(textField.getText()+a);
			}
		});
		btnTanh.setFont(new Font("Tahoma", Font.PLAIN, 13));
		btnTanh.setBounds(306, 252, 64, 37);
		frame.getContentPane().add(btnTanh);
		
		JButton btnAdd = new JButton("+");
		btnAdd.setEnabled(false);
		btnAdd.addActionListener(new ActionListener() {
			public void actionPerformed(ActionEvent e) {
				first=Double.parseDouble(textField.getText());
				textField.setText("");
				operation="+";              //holds operation to be done
			
			}
		});
		btnAdd.setFont(new Font("Tahoma", Font.BOLD, 21));
		btnAdd.setBounds(306, 298, 64, 37);
		frame.getContentPane().add(btnAdd);
		
		JButton btnSub = new JButton("-");
		btnSub.setEnabled(false);
		btnSub.addActionListener(new ActionListener() {
			public void actionPerformed(ActionEvent e) {
			first=Double.parseDouble(textField.getText());
			textField.setText("");
			operation="-";                //holds operation to be done
			}
		});
		btnSub.setFont(new Font("Tahoma", Font.BOLD, 21));
		btnSub.setBounds(306, 343, 64, 37);
		frame.getContentPane().add(btnSub);
		
		JButton btnDivide = new JButton("/");
		btnDivide.setEnabled(false);
		btnDivide.addActionListener(new ActionListener() {
			public void actionPerformed(ActionEvent e) {
				first=Double.parseDouble(textField.getText());
				textField.setText("");
				operation="/";            //holds operation to be done
			}
		});
		btnDivide.setFont(new Font("Tahoma", Font.BOLD, 21));
		btnDivide.setBounds(306, 437, 64, 37);
		frame.getContentPane().add(btnDivide);
		
		JButton btnequal = new JButton("=");
		btnequal.setEnabled(false);
		btnequal.addActionListener(new ActionListener() {
			public void actionPerformed(ActionEvent e) {
				second=Double.parseDouble(textField.getText());
				if(operation=="+")
				{
					result=first+second;
					answer=String.format("%.2f", result);  //converting string storing result into answer
					textField.setText(answer);
				}
				else if(operation=="-")
				{
					result=first-second;
					answer=String.format("%.2f", result);   //converting string storing result into answer
					textField.setText(answer);
				}
				else if(operation=="*")
				{
					result=first*second;
					answer=String.format("%.2f", result);
					textField.setText(answer);
				}
				else if(operation=="/")
				{
					result=first/second;
					answer=String.format("%.2f", result);
					textField.setText(answer);
				}
				else if(operation=="%")
				{
					result=first%second;
					answer=String.format("%.2f", result);
					textField.setText(answer);
				}
				else if(operation=="X^Y")
				{
					double resultt=1;
					for(int i=0;i<second;i++)
					{
					resultt=first*resultt;
					}
					
					answer=String.format("%.2f", resultt);
					textField.setText(answer);
				
				}
			}
			});
		btnequal.setFont(new Font("Tahoma", Font.BOLD, 21));
		btnequal.setBounds(306, 484, 64, 37);
		frame.getContentPane().add(btnequal);
		
		JButton btnMul = new JButton("*");
		btnMul.setEnabled(false);
		btnMul.addActionListener(new ActionListener() {
			public void actionPerformed(ActionEvent e) {
				first=Double.parseDouble(textField.getText());
				textField.setText("");
				operation="*";                     //holds operation to be done
			}
		});
		btnMul.setFont(new Font("Tahoma", Font.BOLD, 21));
		btnMul.setBounds(306, 390, 64, 37);
		frame.getContentPane().add(btnMul);
		
		JButton btnRoot= new JButton("\u221A");
		btnRoot.setEnabled(false);
		btnRoot.addActionListener(new ActionListener() {
			public void actionPerformed(ActionEvent e) {
				double a =Math.sqrt(Double.parseDouble(textField.getText()));
				textField.setText("");
				textField.setText(textField.getText()+a);
			}
		});
		btnRoot.setFont(new Font("Tahoma", Font.PLAIN, 17));
		btnRoot.setBounds(10, 209, 64, 37);
		frame.getContentPane().add(btnRoot);
		
		JButton btn1byx = new JButton("1/x");
		btn1byx.setEnabled(false);
		btn1byx.addActionListener(new ActionListener() {
			public void actionPerformed(ActionEvent e) {
				double a =1/(Double.parseDouble(textField.getText()));
				textField.setText("");
				textField.setText(textField.getText()+a);
			}
		});
		btn1byx.setFont(new Font("Tahoma", Font.PLAIN, 17));
		btn1byx.setBounds(10, 251, 64, 37);
		frame.getContentPane().add(btn1byx);
		frame.setBounds(100, 100, 401, 580);
		frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
		
		JRadioButton rdbtnNewRadioButton = new JRadioButton("ON");
		rdbtnNewRadioButton.addActionListener(new ActionListener() {
			@SuppressWarnings("null")
			public void actionPerformed(ActionEvent e) {
				btn1.setEnabled(true);
				btn2.setEnabled(true);
				btn3.setEnabled(true);
				btn4.setEnabled(true);
				btn5.setEnabled(true);
				btn6.setEnabled(true);
				btn7.setEnabled(true);
				btn8.setEnabled(true);
				btn9.setEnabled(true);
				btn0.setEnabled(true);
				
				btndot.setEnabled(true);
				btnAdd.setEnabled(true);
				btnSub.setEnabled(true);
				btnMul.setEnabled(true);
				btnDivide.setEnabled(true);
				btnequal.setEnabled(true);
				btnPercent.setEnabled(true);
				
				btnSin.setEnabled(true);
				btnSinh.setEnabled(true);
				btnCos.setEnabled(true);
				btnCosh.setEnabled(true);
				btnTan.setEnabled(true);
				btnTanh.setEnabled(true);
				
				btnBackSpace.setEnabled(true);
				btnClear.setEnabled(true);
				btnXy.setEnabled(true);
				btnX.setEnabled(true);
				btnEx.setEnabled(true);
				btnLog.setEnabled(true);
				bcc.setEnabled(true);
				btt.setEnabled(true);
				btnPlusMinus.setEnabled(true);
					
				btnRoot.setEnabled(true);
				btn1byx.setEnabled(true);
				textField.setEnabled(true);

			}
		});
		buttonGroup.add(rdbtnNewRadioButton);
		rdbtnNewRadioButton.setFont(new Font("Tahoma", Font.BOLD, 17));
		rdbtnNewRadioButton.setBounds(6, 172, 57, 21);
		frame.getContentPane().add(rdbtnNewRadioButton);
		
		JRadioButton rdbtnOff = new JRadioButton("OFF");
		rdbtnOff.setSelected(true);
		rdbtnOff.addActionListener(new ActionListener() {
			@SuppressWarnings("null")
			public void actionPerformed(ActionEvent e) {
				btn1.setEnabled(false);
				btn2.setEnabled(false);
				btn3.setEnabled(false);
				btn4.setEnabled(false);
				btn5.setEnabled(false);
				btn6.setEnabled(false);
				btn7.setEnabled(false);
				btn8.setEnabled(false);
				btn9.setEnabled(false);
				btn0.setEnabled(false);
				
				btndot.setEnabled(false);
				btnAdd.setEnabled(false);
				btnSub.setEnabled(false);
				btnMul.setEnabled(false);
				btnDivide.setEnabled(false);
				btnequal.setEnabled(false);
				btnPercent.setEnabled(false);
				
				btnSin.setEnabled(false);
				btnSinh.setEnabled(false);
				btnCos.setEnabled(false);
				btnCosh.setEnabled(false);
				btnTan.setEnabled(false);
				btnTanh.setEnabled(false);
				
				btnBackSpace.setEnabled(false);
				btnClear.setEnabled(false);
				btnXy.setEnabled(false);
				btnX.setEnabled(false);
				btnEx.setEnabled(false);
				btnLog.setEnabled(false);
				bcc.setEnabled(false);
				btt.setEnabled(false);
				btnPlusMinus.setEnabled(false);
				
				btnRoot.setEnabled(false);
				btn1byx.setEnabled(false);
				textField.setEnabled(false);
				
			}
		});
		buttonGroup.add(rdbtnOff);
		rdbtnOff.setFont(new Font("Tahoma", Font.BOLD, 16));
		rdbtnOff.setBounds(68, 172, 57, 21);
		frame.getContentPane().add(rdbtnOff);
		
		
	}
}console.log( 'Code is Poetry' );

Output :

output
output
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