Octal to Decimal

public class Oct2Dec
{
public static void main(long n)
{
long temp=n;
long sum=0,rem,p=0;
while(n>0)
{
rem=n%8;
sum=sum + (long)(rem*(Math.pow(10,p)));
n=n/8;
p++;
}

System.out.println(“Binary of “+temp+” = “+sum);
}
}