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

I have to make a class which has a main method that makes a ArrayList from input by a user. Bascially the user types in a integer, hits enter, then types another integer, hits enter, up to as many as ...

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 ...