What is the output of the following code snippet?

public interface Computable {
    int compute(int n);
}
public class Test {
    public static void main(String[] args) {
        Computable c = new Computable() {
            @Override
            public int compute(int n) {
                return n * n;
            }
        };
        System.out.println(c.compute(4));
    }
}