Conversion of binary number to decimal number using java programming language

import java.io.*;
class Test {


public static void main(String[] args) throws IOException {


long no,n=0l,j=1,rem,no1;

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

BufferedReader br=new BufferedReader(new InputStreamReader (System.in));

no=Long.parseLong(br.readLine());
no1=no;
while(no!=0){
rem=no%10;
n=n+rem*j;
j=j*2;
no=no/10;
}

System.out.println("The value