Convert Binary to Decimal Number in Java

Convert Binary to Decimal Number in Java
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 of binary no. "+no1+" is "+n);
}
}

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