Conversion of a number from BINARY to OCTAL

Write a java program to accept a binary number and convert to decimal number.

import java.util.*;

public class bitode {
public static void main(String[] args) {
Scanner sc = new Scanner(System.in);
System.out.println("ENTER A BINARY NUMBER : ");
int n=sc.nextInt();
double s=0;
int c=0;
while(n>0)
{
int d=n%10;
s=s+Math.pow(2,c)*d;
c++;
n=n/10;
}
System.out.println("DECIMAL VALUE : " + s);
}
}

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