Multiplication of two numbers in java

Java program for Multiplication two Integers

In this section, you will learn how to easily multiply two numbers in Java. Let's see :

• If you using int data type, then you can multiply numbers up to a limit(range of int data type).

• If you want to multiply very large numbers, then you may use the BigInteger class in Java.

1.) First program :

In this program, we specify the value of both the numbers in the program itself.

Let's try to create a simple example :

  ➤ Example : multiply two numbers with predefined value;

class MultiplyTwoNumbers 
{
   public static void main(String args[]) {      
      int x = 15, y = 10, multiply;
      multiply = x * y;
      
      System.out.println("Multiplication of two numbers is : "+multiply);
   }
}
                            

Explanation :

 Example 1 : explanation

In the above program, we have created three integer variables x, y and multiply, then stored (15 and 10) values in x and y.

• Then, x and y are multiply using the * operator, and its result is stored in another variable multiply.

•  

• Finally, multiply is printed on the screen using System.out.println() function.

2.) Second program :

In this program, we will take two inputs from the user(entered by the user) and prints the multiply.

Note : Scanner class is a part of package(java.util), so we required to import this package in our Java program.

Let's try to create a simple example :

  ➤ Example : multiply two numbers with user input(Scanner);

import java.util.Scanner;
class MultiplyTwoNumbers 
{
   public static void main(String args[]) {      
      int x, y, multiply;

      System.out.println("Enter two integers to calculate their Multiplication : ");
      Scanner in = new Scanner(System.in);
     
      x = in.nextInt();
      y = in.nextInt();
      multiply = x * y;
     
     System.out.println("Multiplication of two numbers is : "+multiply);
   }
}
                            

Explanation :

 Example 2 : explanation

In the above program, we have created three integer variables x, y and multiply, then create a Scanner class so that you can take input from the user for x and y.

• Then, x and y are multiply using the * operator, and its result is stored in another variable multiply.

•  

• Finally, multiply is printed on the screen using System.out.println() function.