Binary to decimal conversion in java

Java code to covert binary number to decimal number

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;