Recursion In Java : Introduction

Recursion is supported in Java. A method calling itself is called recursion.
In simple terms we can say that when a method body contains a calling statements for itself.
Recursive methods has two parts :
- Base case : A base case is required to terminate a recursive process, else it will run infinitely.
- Self-call statement : A self-calling statement is present is recursive method body, which always tends to base case i.e. every time a recursive method calls itself it approaches to base case .

Let’s take an example where we will find a factorial of a number using recursion.

Recursion In Java : Example
This image describes the output of the sample program for recursion in java.

Recursion In Java : Output

Recursion In Java : Flowchart

As x=0 it returns 1 to the method it was called from and it starts backtracking to get the final results as 120.

Note : Every time a method is called a new memory area is created.

JAVA RECURSION