In part one of this series the basics of what a pointer is and how to declare one was examined in detail. It is now time to examine how pointers work when dealing with slightly more complex variables ...

Java supports arrays. Each element occupies the same number of bytes, and the exact number depends on the type of the element’s data item. Furthermore, all elements share the same type.

Ragged arrays are useful data structures because of their memory-saving capability. For example, consider a spreadsheet with the potential for 100,000 rows by 20,000 columns.