Subclass

A class that extends another class.

What is Subclass in Java?

Subclass — A class that extends another class.

class Alert {
    String text() {
        return "Alert";
    }
}

class EmailAlert extends Alert {
    @Override
    String text() {
        return "Email";
    }
}

Level: Journeyman · More Java terms at this level

Updated September 27, 2026