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Tip of the Day
Language: Java
Expertise: Intermediate
Sep 8, 1999



Building the Right Environment to Support AI, Machine Learning and Deep Learning

Create an Array of Functions in Java

Java doesn't offer direct support for pointer to functions. But this does not mean that you cannot have a set of functions that can be accessed via a mapping index. The code below shows you how to create an array of functions.

First you'll need a generic Interface like:

       public interface Function 
          public void runFunction();
Then, you can have a variety of classes that implement this interface in their own way:

       class Function0 implements Function 
            public void runFunction() 
               System.out.println("Function 0 ececutes: ...");

       class Function1 implements Function 
            public void runFunction() 
               System.out.println("Function 1 ececutes: ...");
Now you just create instances of your classes and place them in an array:
         Function[] funcArray = new Function[2];
         funcArray[0] = new Function0();
         funcArray[1] = new Function1();
And, finally, to execute:

Behrouz Fallahi
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