Java Methods

Parameters, return values, overloading and recursion.

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A method is a block of code inside a class that runs when called.

static int add(int a, int b) { return a + b; }
void means the method returns nothing.
Overloading: several methods with the same name but different parameters.
Recursion: a method that calls itself, with a stopping condition.

Key Takeaways: Java Methods

Mastering Java Methods helps you write clean and reliable Java code. Follow standard conventions, test edge cases, and keep logic simple. Try running the code example below and complete the exercises to build confidence.

Java Methods Code Example

Java

public class Main {
    static int add(int a, int b) { return a + b; }
    static double add(double a, double b) { return a + b; }

    static int factorial(int n) {
        return n <= 1 ? 1 : n * factorial(n - 1);
    }

    static void greet(String name) {
        System.out.println("Hello, " + name);
    }

    public static void main(String[] args) {
        System.out.println(add(2, 3));
        System.out.println(add(2.5, 3.5));
        System.out.println(factorial(6));
        greet("Usman");
    }
}

Output