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

Since Java8, you can use lambdas, which also have libraries in the official SE 8 API.

Usage: You need to use a interface with only one abstract method. Make an instance of it (you may want to use the one java SE 8 already provided) like this:

Function functionname = (inputvariablename) {
... 
return outputinstance;
}

For more information checkout the documentation: https://docs.oracle.com/javase/tutorial/java/javaOO/lambdaexpressions.html