In the previous post, we learned about Java class attributes. Now, let’s explore Java class methods.

A method is a block of code which only runs when it is called.

You can pass data, known as parameters, into a method.

Methods are used to perform certain actions, and they are also known as functions.

Why use methods? To reuse code: define the code once, and use it many times.

Methods are declared within a class, and they are used to perform certain actions.

Example:

Create a method inside Main:

public class Main {
  static void myMethod() {
    // code to be executed
  }
}

Example Explained

myMethod() is the name of the method.

static means that the method belongs to the Main class and not an object of the Main class.

void means that this method does not have a return value.

Call a Method

To call a method in Java, write the method’s name followed by two parentheses () and a semicolon;

public class Main {
  static void myMethod() {
    System.out.println("Hello World!");
  }
}
  public static void main(String[] args) {
    myMethod(); // call the method
  }
}

In the example above, we created a method named myMethod(), which prints “Hello World!” to the console. We then called this method inside the main method to execute it.

That’s it for now! In the next post, we will explore more about Java method parameters and return values.

Happy hacking!