Introduction to Java Methods and Functions

 

Methods (or functions) help organize your code and make it reusable.

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What is a Method?

A method is a block of code that performs a specific task. You can call it anytime in your program.

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Example Code:

public class MethodsExample {
    public static void greet(String name) {
        System.out.println("Hello, " + name + "!");
    }

    public static void main(String[] args) {
        greet("Fuad");
        greet("Reader");
    }
}

Explanation:

• greet is a method that takes a String parameter.

• main calls greet with different names.

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Tips:

• Keep methods short and focused.

• Use parameters to make methods flexible.

• Always give methods meaningful names, like calculateSum, printMessage, or showMenu.

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Practice:

Write a method to:

• Add two numbers and return the result.

• Print your favorite quote.

• Calculate the square of a number.