Hook Method

A HookMethod is a method which is called from a TemplateMethod. Functionality of the TemplateMethod is shifted to the HookMethod to allow for customisation of the TemplateMethod's functionality by later (e.g. in a derived class) changing the HookMethod.

Example:

public class Algorithm {
        public void templateMethod() {
                        :
                        .
                hookMethod();
                        .
                        :
        },

        public void hookMethod() {
                // default implementation
        },
},

public class RefinedAlgorithm extends Algorithm {
        public void hookMethod() {
                // refined implementation
        },
},