Defining methods

Learn to define static methods.

Defining methods

A method is a named block of code that does a specific job. The static keyword defines the method at class level; it can be called directly from main.

static void greet() {
  System.out.println("Hello");
}

The shape is: static returnType name(parameters) { ... }. When the return type is void, the method returns no value. With no parameters, the parentheses stay empty. To call it, just write the name and the parentheses.

Calling a method and flow

After you define a method, you call it by writing its name and parentheses. When called, the flow jumps into the method and returns when the code finishes.

public static void main(String[] args) {
  greet();
  greet();
}
static void greet() {
  System.out.println("Hello");
}

In this example, Hello is printed twice. The method is defined once and called as many times as needed. This prevents code duplication.

Exercise Write a greeting method

Define a static void method called greet; its body should run System.out.println("Hoş geldin"). Call it twice from main.

Show example solution

static void greet() {
  System.out.println("Hoş geldin");
}
// inside main:
greet();
greet();

Test yourself

Which of the following is a valid static method definition?
- static void greet() { }
- def greet():
- function greet() { }
- void static greet() { }
Show answer

void static greet() { } — In Java, static comes first, then the return type, then the name.
Match method part to purpose

static

Defines at class level
void

Returns no value
()

No parameters
{ }

Method body

Fill in the blank: call the method

public static void main(String[] args) {
  greet____;
}
static void greet() {
  System.out.println("Hello");
}

Show answer

public static void main(String[] args) {
  greet();
}
static void greet() {
  System.out.println("Hello");
}

Next lesson: return

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