How to convert binary to decimal number – Java Program

In this example we will convert binary to decimal using  java. We will use this logic

11 ==>>  1*2^1+1*2^0   == > 3

110 ==> 1*2^2+1*2^1+0*2^0  ==> 6

package com.javaproficiency;

public class BinaryToDecimal {

public static void main(String[] args) {

System.out.println(” decimal number =”+ getDecimalFromBinary(11));

}

public static int getDecimalFromBinary(int num ){
int decimal = 0 ;
int p = 0;
while ( num > 0) {
decimal += num %10 * Math.pow(2, p );
num = num /10;
p++;
}

return decimal;
}

}

Output:
decimal number = 3

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