multiply two numbers without using multiplication operator in java code example

Example: Multiply two numbers without using arithmetic operators in java

import java.util.Scanner;
public class MultiplyWithoutArithmeticOperators
{
   static int multiplyNumber(int num1, int num2)
   {
      int output = 0;
      boolean boolNegative = (num1 < 0 && num2 >= 0) || (num2 < 0 && num1 >= 0);
      boolean boolPositive = !boolNegative;
      num1 = Math.abs(num1);
      for(int a = 0; a < num1; a++)
      {
         if(boolNegative && num2 > 0 || boolPositive && num2 < 0)
         {
            output -= num2;
         }
         else
         {
            output += num2;
         }
      }
      return output;
   }
   public static void main(String[] args)
   {
      Scanner sc = new Scanner(System.in);
      System.out.print("Please enter first number: ");
      int num1 = sc.nextInt();
      System.out.print("Please enter second number: ");
      int num2 = sc.nextInt();
      System.out.println("Multiplication of two numbers: " + multiplyNumber(num1, num2));
      sc.close();
   }
}