program to convert binary to decimal(using java)

 class binary_decimal

{

public static void main(String args[])

{

int  no=1101,b=0,sum=0,i=0;

while(no>0)

{

b=n0%10;

no=no/10;

sum=sum+(int) b* Math.pow(2,i++);

}

System.out.println(sum);

}

}