Program to Convert Binary to Decimal.

import java.io.*;

class BinaryToDecimal
{
    public static void main(String[] args) throws Exception
    {
        BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
        System.out.print("Enter Binary no. to convert in Decimal : ");
        String number = br.readLine();
             
        /*
          to convert Binary number to decimal number use,
          int parseInt method of Integer wrapper class.
       
          Pass 2 as redix second argument.
         */

        int decimalNumber = Integer.parseInt(number, 2);
        System.out.println("Binary number converted to decimal number");
        System.out.println("Decimal number is : " + decimalNumber);

    }
}