Parameters vs Arguments in Method Java

Method Inputs in Java: Parameters and Arguments

Definitions

Parameters vs Arguments

Parameters: Placeholders in a method to represent input values the method needs.

Arguments: Actual values provided to the method when it's called.

Real-World Analogy

Imagine methods as recipes at the GeeksCodes Café. Parameters are like placeholders for ingredients, and arguments are the actual ingredients used to make the dish.

Parameters vs Arguments

Code Example

Parameters

public class GreetingApp {
    // "name" is a parameter here
    static void greetUser(String name) {
        System.out.println("Hello, " + name + "! Welcome to GeeksCodes.");
    }
}
    

Arguments

public class MainApp {
    public static void main(String[] args) {
        // "Rahul" is the argument passed to the greetUser method
        GreetingApp.greetUser("Rahul");  // Output: Hello, Rahul! Welcome to GeeksCodes.
    }
}
    

Key Points

• Parameters are placeholders in the method definition.
• Arguments are actual values passed to the method when it’s called.
• Parameters make methods reusable and flexible.
• Arguments allow methods to work with different data.