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Write a Java program to convert a binary number to decimal number

YasminRadwan26
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2022-05-10
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Write a Java program to convert a binary number to decimal number

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YasminRadwan26
2022-05-10
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In this demo I have used NetBeans IDE 8.2 for debugging purpose. But you can use any java programming language compiler as per your availability..

import java.util.Scanner;
public class Javaexcercise {
 
 public static void main(String[] args) 
 {
  Scanner sc = new Scanner(System.in);
  long binaryNumber, decimalNumber = 0, j = 1, rem;
  System.out.print("Enter a binary number: ");
  binaryNumber = sc.nextLong();
 
  while (binaryNumber != 0) 
  {
   rem = binaryNumber % 10;
   decimalNumber = decimalNumber + rem * j;
   j = j * 2;
   binaryNumber = binaryNumber / 10;
  }
  System.out.println("Decimal Number: " + decimalNumber);
 }
}

Result:

Enter a binary number: 10100

Decimal Number: 20

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