Java Program to Multiply Number by 4 using Bitwise Operators

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This is a Java Program to Multiply given Number by 4 using Bitwise Operators.

Enter the number you wish to multiply as input. After that we use left shift by 2 to multiply given input by four and hence get the output.

Here is the source code of the Java Program to Multiply given Number by 4 using Bitwise Operators. The Java program is successfully compiled and run on a Windows system. The program output is also shown below.

  1. import java.util.Scanner;
  2. public class Multiply_Bitwise 
  3. {
  4.     public static void main(String[] args) 
  5.     {
  6.         int n;
  7.         Scanner s = new Scanner(System.in);
  8.         System.out.print("Enter the number:");
  9.         n = s.nextInt();
  10.         int mul = n << 2;
  11.         System.out.println("Answer:"+mul);
  12.     }
  13. }

Output:

$ javac Multiply_Bitwise.java
$ java Multiply_Bitwise
 
Enter the number:5
Answer:20

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Manish Bhojasia, a technology veteran with 20+ years @ Cisco & Wipro, is Founder and CTO at Sanfoundry. He lives in Bangalore, and focuses on development of Linux Kernel, SAN Technologies, Advanced C, Data Structures & Alogrithms. Stay connected with him at LinkedIn.

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