Method Overloading

This lesson covers method overloading in Java, so you can define multiple methods that share a name but take different parameters. It's for anyone searching "Java method overloading usage."

Java has no "default parameter" feature like some other languages, but overloading achieves something similar — you can define multiple methods with the same name that differ in parameter count or type.

The example defines greet(String name) and a parameterless greet(), with the latter calling the former internally. The caller gets the right method chosen automatically based on how many arguments they pass.

A common early mistake is confusing overloading with overriding. Overloading defines multiple methods with different parameters in the same class; overriding replaces a parent class's method in a subclass — similar-sounding names that are easy to mix up.

In real projects, overloading constructors is common too, allowing a flexible class design that supports several different initialization patterns.

📖 Reference code

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

static void greet() {
    greet("Guest");
}

greet("Alice");
greet();

✍️ Your code

Type your code, then press "Run"

🧪 This site can't compile or run Java directly, so it checks on the spot whether what you typed matches the reference code (scoring happens entirely in your browser — nothing is sent anywhere).