Problems with my first Java program

Question

I'm trying to make a simple pounds to kilogram converter. Not sure what I'm doing wrong because it won't print out the answer. Could someone help me out.

public class ass10 {

    public static void main(String[] args) {
    double lbs2kg(3);
    }
    public double lbs2kg(double w){
        System.out.println(w/2.2);
    }
}

Answer 1

Delete double or put a variable and also method lbs2kg() must be static (Make it return double or a compatible type, too).

public static void main(String[] args) {
    double x = lbs2kg(3);
}