From the course: Java Design Patterns: Structural
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Implement the Fyweight pattern - Java Tutorial
From the course: Java Design Patterns: Structural
Implement the Fyweight pattern
- [Instructor] The first thing I'm going to do to implement the flyweight pattern is to implement a class to represent that flyweight object. So I'm going to create a new class by right clicking on the Java package and going to New, Java Class. And I'll call this vehicle factory. In this class, I want to check if a vehicle object of the specified type already exists. And if it does, then reference that. If it doesn't, then I'll create a new one. So first, I'm going to create a field of type hashmap, which I'll call vehicles. And this is to store the two different types of vehicle. In my traffic simulator class, I'm using a random number to decide which kind of vehicle to create. If it's a zero, then I create a car, and if it's a one, then I create a truck. So in my hashmap, the key is going to be an integer, and the value is going to be a vehicle. Next, I need a method to check if the type of vehicle already exists, and…
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