ComplexConditionsExamProblems-Operations

import java.math.BigDecimal;
import java.math.RoundingMode;
import java.text.DecimalFormat;
import java.util.Scanner;

public class Operations2 {
    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);

        int num1 = Integer.parseInt(scanner.nextLine());
        int num2 = Integer.parseInt(scanner.nextLine());
        String operator = scanner.nextLine();

        BigDecimal result = new BigDecimal("0.00");
        String output = "";
        DecimalFormat intFormater = new DecimalFormat("0");

        if (num2 == 0 && (operator.equals("/") || operator.equals("%"))) {
            output = String.format("Cannot divide %d by zero", num1);
        } else if (operator.equals("/")) {
            result = new BigDecimal(num1).divide(new BigDecimal(num2), 2, RoundingMode.HALF_UP);
            DecimalFormat decimalFormater = new DecimalFormat("0.00");
            output = String.format("%d %s %d = %s", num1, operator, num2, decimalFormater.format(result));
        } else if (operator.equals("%")) {
            result = new BigDecimal(num1).remainder(new BigDecimal(num2));
            output = String.format("%d %s %d = %s", num1, operator, num2, intFormater.format(result));
        } else {
            if (operator.equals("+")) {
                result = new BigDecimal(num1 + num2);
            } else if (operator.equals("-")) {
                result = new BigDecimal(num1 - num2);
            } else if (operator.equals("*")) {
                result = new BigDecimal(num1 * num2);
            }
            output = String.format("%d %s %d = %s - %s", num1, operator, num2, intFormater.format(result),
                    result.intValueExact() % 2 == 0 ? "even" : "odd");
        }
        System.out.println(output);
    }
}