This post explains how to use for loops in Java. Including advanced tricks like nested for loops, break, continue, and labels!

HashMap vs. Hashtable similarities Both the Hashtable and HashMap implement the Map interface and both share the same set of methods used to add, remove and manipulate elements of a key-value, ...

This tutorial explains how a Java HashMap works internally and explores the challenges of implementing it, including buckets, collisions and hash codes.

This post explains how to use loops in Java. Learn for loops, while loops, do while, break, and continue. All without going loopy!