Class-Based Java Program (Object-Oriented)

 

✅ 1. Class-Based Java Program (Object-Oriented)

class ProfitLoss {

    private double cp;
    private double sp;

    public ProfitLoss(double cp, double sp) {
        this.cp = cp;
        this.sp = sp;
    }

    public void calculate() {
        if (sp > cp) {
            double profit = sp - cp;
            double profitPercent = 

(profit / cp) * 100;
            System.out.println(

"Profit: " + profit);
            System.out.println(

"Profit Percentage: " + profitPercent + "%");

        } else if (cp > sp) {
            double loss = cp - sp;
            double lossPercent = 

(loss / cp) * 100;
            System.out.println

("Loss: " + loss);
            System.out.println

("Loss Percentage: " + lossPercent + "%");

        } else {
            System.out.println

("No Profit, No Loss.");
        }
    }
}

public class ProfitLossMain {
    public static void main(String[] args) {
        ProfitLoss obj = 

new ProfitLoss(500, 650);
        obj.calculate();
    }
}

✅ 2. Menu-Driven Console Version

(Choose 1 for profit/loss, 2 to exit)

import java.util.Scanner;

public class ProfitLossMenu {
    public static void main(String[] args) {

        Scanner sc = new Scanner(System.in);
        int choice;

        do {
            System.out.println("\n

===== PROFIT & LOSS CALCULATOR =====");
            System.out.println("1.

 Calculate Profit / Loss");
            System.out.println("2. Exit");
            System.out.print("Enter

 your choice: ");
            choice = sc.nextInt();

            switch (choice) {

                case 1:
                    System.out.print

("Enter Cost Price (CP): ");
                    double cp = 

sc.nextDouble();

                    System.out.print

("Enter Selling Price (SP): ");
                    double sp = 

sc.nextDouble();

                    if (sp > cp) {
                        double profit = 

sp - cp;
                        double profitPercent

 = (profit / cp) * 100;
                        System.out.println

("Profit: " + profit);
                        System.out.println

("Profit Percentage: " + profitPercent + "%");

                    } else if (cp > sp) {
                        double loss = cp - sp;
                        double lossPercent 

= (loss / cp) * 100;
                        System.out.println

("Loss: " + loss);
                        System.out.println

("Loss Percentage: " + lossPercent + "%");

                    } else {
                        System.out.println

("No Profit, No Loss.");
                    }
                    break;

                case 2:
                    System.out.println

("Exiting...");
                    break;

                default:
                    System.out.println

("Invalid Choice! Try again.");
            }

        } while (choice != 2);

        sc.close();
    }
}

✅ 3. GUI Version (Java Swing)

This version shows a small graphical window for input and output.

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

public class ProfitLossGUI extends JFrame {

    private JTextField cpField, spField;
    private JButton btnCalculate;
    private JLabel resultLabel;

    public ProfitLossGUI() {
        setTitle("Profit & Loss Calculator");
        setSize(350, 250);
        setDefaultCloseOperation

(JFrame.EXIT_ON_CLOSE);
        setLayout(new GridLayout(4, 2));

        add(new JLabel("Cost Price (CP): "));
        cpField = new JTextField();
        add(cpField);

        add(new JLabel("Selling Price (SP): "));
        spField = new JTextField();
        add(spField);

        btnCalculate = new JButton

("Calculate");
        add(btnCalculate);

        resultLabel = new JLabel("");
        add(resultLabel);

        btnCalculate.

addActionListener(new ActionListener() {
            public void

 actionPerformed(ActionEvent e) {
                double cp = 

Double.parseDouble(cpField.getText());
                double sp = 

Double.parseDouble(spField.getText());

                if (sp > cp) {
                    double profit = sp - cp;
                    double profitPer

 = (profit / cp) * 100;
                    resultLabel.setText

("Profit: " + profit + " 

| " + profitPer + "%");

                } else if (cp > sp) {
                    double loss = cp - sp;
                    double lossPer = 

(loss / cp) * 100;
                    resultLabel.

setText("Loss: " + loss + " | " 

+ lossPer + "%");

                } else {
                    resultLabel.

setText("No Profit, No Loss.");
                }
            }
        });

        setVisible(true);
    }

    public static void main(String[] args) {
        new ProfitLossGUI();
    }
}

🎉 All Versions Completed

You now have: ✔ Simple Java Program
✔ OOP/Class-based Program
✔ Menu-driven Console Program
✔ GUI Program using Swing