# Java: Multiply two specified integers without using the multiply operator

## Java Basic: Exercise-168 with Solution

Write a Java program to multiply two given integers without using the multiply operator (*).

**Sample Solution:**

**Java Code:**

```
// Importing the required Java utilities package
import java.util.*;
// Defining a class named Solution
public class Solution {
// Method to multiply two integers without using the multiplication operator
public static int multiply(int n1, int n2) {
int result = 0; // Initializing the variable to store the result of multiplication
boolean negative_num = (n1 < 0 && n2 >= 0) || (n2 < 0 && n1 >= 0); // Checking if the result will be negative
boolean positive_num = !negative_num; // Determining if the result will be positive
n1 = Math.abs(n1); // Converting n1 to its absolute value to simplify multiplication
// Loop to perform multiplication without using the * operator
for (int i = 0; i < n1; i++) {
// Handling the addition or subtraction based on the signs of the numbers
if (negative_num && n2 > 0 || positive_num && n2 < 0)
result -= n2; // Subtracting n2 from the result
else
result += n2; // Adding n2 to the result
}
return result; // Returning the final result of multiplication
}
// The main method of the program
public static void main(String[] args) {
Scanner in = new Scanner(System.in); // Creating a Scanner object to read input from the user
// Asking the user to input the first number
System.out.print("Input the first number: ");
int n1 = in.nextInt(); // Reading the first integer input from the user
// Asking the user to input the second number
System.out.print("Input the second number: ");
int n2 = in.nextInt(); // Reading the second integer input from the user
// Displaying the result of the multiplication by calling the multiply method
System.out.println("\nResult: " + multiply(n1, n2));
}
}
```

Sample Output:

Input the first number: 25 Input the second number: 5 Result: 125

**Flowchart: **

**Java Code Editor:**

** Contribute your code and comments through Disqus.**

**Previous:** Write a Java program to move every zero to the right side of a given array of integers.

**Next:** Write a Java program to reverse the content of a sentence (assume a single space between two words) without reverse every word.

**What is the difficulty level of this exercise?**

Test your Programming skills with w3resource's quiz.

**It will be nice if you may share this link in any developer community or anywhere else, from where other developers may find this content. Thanks.**

https://www.w3resource.com/java-exercises/basic/java-basic-exercise-168.php

**Weekly Trends and Language Statistics**- Weekly Trends and Language Statistics