I've been tasked with a building a Java cache toolkit with various ... The relevant parts of the code are: Code: private HashMap cache = new HashMap(); public Object get (Object key) throws ...

And by the way, just to give you an idea of the HashMap method -- uh, the hashCode method -- every time you create, um, an object in Java, each instance that you create gets assigned its own hashCode.

Java HashMap is similar to HashTable, but it is unsynchronized. It allows to store the null keys as well, but there should be only one null key object and there can be any number of null values. This ...

like the HashMap class, do not. The Java Stack interface represents a classical stack data structure, where elements can be pushed to last-in-first-out (LIFO) stack of objects. In Stack we push an ...

Download the source code for example applications in this tutorial. Created by Jeff Friesen. We’ll look at each of these methods and how you can use them to perform special tasks in the context ...

There are several ways to find duplicates in a Java List, array or other collection class ... One such datatype is the HashMap. With a HashMap we must still look up matching elements, but the HashMap ...