Generics’ Bounded Wild Cards in Java PRO
When using a bounded wild card we can limit the parametric type as if we were saying that it can be any type as long as it extends or implements a specific type we specify. package il.ac.hit.samples; import java.util.Iterator; import java.util.Vector; public class BoundedWildCardSample { public static double calculateTotal(Vector<? extends Shape> vicy) { double sum […]
Generic Type Arrays in Java Limit PRO
When using an array of generic type objects in Java we cannot specify the exact parametric type. This limit exists due to the way generics is implemented in Java (in the compiler level). package il.ac.hit.samples; public class ArraysGenericsLimit { public static void main(String[] args) { MyStack<?> []vec = new MyStack<?>[10]; vec[0] = new MyStack<Rectangle>(); vec[1] […]