Java equivalent of function mapping in Python

Question

In python, if I have a few functions that I would like to call based on an input, i can do this:

lookup = {\'function1\':function1, \'function2\':function2, \'fu         


        

Answer 1

Unfortunately, Java does not have first-class functions, but consider the following interface:

public interface F {
  public B f(A a);
}

This models the type for functions from type A to type B, as first-class values that you can pass around. What you want is a Map>.

Functional Java is a fairly complete library centered around first-class functions.