Hook Methods
Hook methods are defined in abstract classes and called from a template method. Hooks are used as placeholders that can be supplied by the component's client in a concrete derived class. Here is a Java example:
/** */ public abstract class Beverage implements Beveragelike { /** * Adds condiments to the beverage */ public abstract void addCondiments; /** * Hook method that determines whether the customer wants condiments * or not. Can be overridden. * @return true, if the customer wants condiments, and false otherwise. */ public boolean customerWantsCondiments { return true; } /** * Prepares the beverage according to this recipe. */ public final void prepareRecipe { // … if (customerWantsCondiments) { addCondiments; } } }Read more about this topic: Method (computer Programming)
Famous quotes containing the words hook and/or methods:
“And yet—it is not beauty that inspires the deepest passion. Beauty without grace is the hook without the bait. Beauty, without expression, tires.”
—Ralph Waldo Emerson (1803–1882)
“A woman might claim to retain some of the child’s faculties, although very limited and defused, simply because she has not been encouraged to learn methods of thought and develop a disciplined mind. As long as education remains largely induction ignorance will retain these advantages over learning and it is time that women impudently put them to work.”
—Germaine Greer (b. 1939)