Recursion: Concept of Recursion and Recursive Methods using Java

The concept of recursion
Recursive methods
Infinite recursion
When to use (and not use) recursion
Using recursion to solve problems

Recursion is the process of defining a problem (or the solution to a problem) in terms of (a simpler version of) itself. For example, we can define the operation "find your way home" as: If you are at home, stop moving. Take one step toward home.