I have a class, say TextHolder, that overrides Object.equals() to return true if both strings in each object are equal - <tt>new TextHolder("Hello World!").equals(new ...

Does anyone know how to call an instance method from a class that is used to construct an arraylist? In my main method I call the instance method like so: int x = hand.Suit("h"); where hand is my ...

Are you just using ArrayList whenever you need to group data?What are the specific scenarios where Set or Map are the correct ...

Do you need to know how to sort Java objects in a collection, array, or map? Here's how to use the Comparable and Comparator interfaces and avoid ClassCastExceptions. Programmers frequently need to ...