Finding the Greatest Common Divisor (GCD) is a fundamental programming task. Learning how to implement GCD using recursion in Java is essential for developing efficient algorithms. Recursion simplifies the logic by breaking down the problem into smaller, manageable parts. To find the GCD using recursion in Java, you need to understand the Euclidean algorithm, which works by reducing the problem size step-by-step. The base case is when one number becomes zero, and the recursive call reduces the problem using the modulus operator.