Methods

Methods are reusable blocks of code. You can pass data in and optionally return a value out.

A simple method

java
public static void greet() {
    System.out.println(\"Hello from a method\");
}

You can call this method from main:

java
public static void main(String[] args) {
    greet();
}

Parameters and return values

java
public static int add(int a, int b) {
    return a + b;
}

public static void main(String[] args) {
    int result = add(3, 5);
    System.out.println(result); // 8
}

Method overloading

In Java you can have methods with the same name but different parameter lists.

java
public static int add(int a, int b) {
    return a + b;
}

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

Later in this track you will see how methods live inside classes and how they relate to objects.