Java Methods

Java Methods

A method is a block of code that only runs when you call it. You can pass data into a method, and it can return data.

Declaring a method

static void myMethod() {
  System.out.println("Hello World!");
}

• static means the method belongs to the class and can be called without creating an object.
• void means the method does not return a value.

Calling a method

To call a method, write its name followed by parentheses:

myMethod();

Call a method multiple times

static void myMethod() {
  System.out.println("Hello World!");
}

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

Each call runs the block again.

Why use methods

• Reuse code without rewriting it.
• Organize a program into clear pieces.
• Make changes in one place instead of many.

TL;DR

• Methods are reusable blocks of code.
• void methods return nothing.
• Call a method with its name and parentheses.