Convert to Decimal from different Base(octal,hexadecimal,binaryetc)

import java.io.*;
import java.util.*;
public class Maintest {

public static void main(String[] args) throws IOException{
BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
        String s = br.readLine();
        while(s!=null)
        {
        Integer dec = Integer.parseInt(s,2);
                /* red colored number is the base.Change this as you want*/
        System.out.println(dec);
        s = br.readLine();
        }
}

}

Coded by sudipto