Java program for binary to decimal conversion

This is a java program to convert a binary number to decimal number:
Where the concept is quite simple to do so-
Step 1: extract digits from last   (using number%10) and then making number = number/10;
Step 2: Digit * 2^{place value of digit}Multiplying the digits from last with the 2 to the power of position of the digit (place value):
Step 3: As seen above adding the each multiplication of Digit * 2^{place value of digit
Example:  1101 = 20 * 1 + 21 * 0 + 22 * 1 + 23 * 1 = 13.}

import java.util.Scanner;

class binarytodecimal

{

public static void main(String args[])

{

int bin, dec=0,k=1;

Scanner scanner=new Scanner(System.in);

System.out.println("Enter the binary number : ");

bin=scanner.nextInt();

while(bin!=0)

{

dec=dec+ (bin%10)*k;     // extracting the last digit of a binary number and multiplying it with 2 ^{digits place value}

k*=2;

bin/=10;     // removing the last digit of a binary number

}

System.out.println("Decimal number = "+dec);

}

}