Methods Mastery

A method is a reusable block of code that performs a specific task. Instead of writing the same code multiple times, we can define a method once and call it whenever needed.

Using methods makes your code:

• Easier to read – Each method has a clear purpose.

• More organized – Code is broken into smaller, manageable parts.

• Reusable – The same method can be called multiple times with different inputs.

Basic Method

A method can take in parameters, which are values that the method uses inside its body. This allows the method to work with different inputs instead of being fixed to a single value.

For example, the method below accepts an integer (num) and prints it to the screen:

public static void printNumber(int num) {
    System.out.println("The number is: " + num);
}

public static void main(String[] args) {
    printNumber(5); // Passing 5 as an argument
}

OUTPUT:

The number is: 5

In this example:

• The method printNumber(int num) takes an integer as a parameter.

• Inside the method, it prints "The number is: " followed by the value of num.

• When calling the method in main(), we pass the value 5, so it prints "The number is: 5".