What's the nearest substitute for a function pointer in Java?

Question

I have a method that\'s about ten lines of code. I want to create more methods that do exactly the same thing, except for a small calculation that\'s going to change one li

Answer 1

None of the Java 8 answers have given a full, cohesive example, so here it comes.

Declare the method that accepts the "function pointer" as follows:

void doCalculation(Function calculation, int parameter) {
    final String result = calculation.apply(parameter);
}

Call it by providing the function with a lambda expression:

doCalculation((i) -> i.toString(), 2);