Then take a look at the multidimensional array in Java! This is a type of Java Array that has two “columns.” Imagine that your typical Java array is an Excel spreadsheet.

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.

Quick Java I/O question:Let's say I've got a TCP socket open to a server, and I'm writing bytes out to the OutputStream (retrieved via Socket.getOutputStream().I then call OutputStream.flush() on ...