It’s impossible to specify multiple class names after extends because Java doesn’t support class-based multiple inheritance. These examples codify is-a relationships: Car is a specialized ...

The first half of this tutorial introduced the basics of inheritance in Java. You learned how to use Java’s extends and super keywords to derive a child class from a parent class, invoke parent ...

The sealed Java class helps reign in the overzealous and often detrimental abuse of Java inheritance. Sealed classes allow a developer to explicitly declare the names of the components that can ...