Defining Methods

A Method (often called a function in other languages) is a block of code that runs only when it is called. Methods are used to perform certain actions, and they are essential for reusing code: define the code once, and use it many times.

Anatomy of a Method

Every method has a signature that defines its name, return type, and parameters.

public static void myMethod() {
    // Code to be executed
}

• public static: Modifiers. We use static here so we can call it from the main method without creating an object.
• void: The return type. void means this method does not return any value.
• myMethod: The name of the method. Standard Java naming convention is camelCase.
• (): Parentheses. Parameters go inside here (more on that later).

Calling a Method

To use a method, you "call" or "invoke" it by writing the method's name followed by two parentheses () and a semicolon.

public class Main {
    static void myMethod() {
        System.out.println("I just got executed!");
    }

    public static void main(String[] args) {
        myMethod(); // Call the method
        myMethod(); // Call it again!
    }
}

Click Run to execute your code

Why Use Methods?

Summary