Image description: inheritance hierarchy

This image shows two classes, each as a block diagram, one above the other.

The class-name in the top block is java.lang.Object. A vertical line connects the java.lang.Object class to the Account class below it. The line indicates a hierarchical inheritance relationship where java.lang.Object is a superclass and Account is a subclass. The subclass Account inherits from the superclass java.lang.Object.

The superclass is also called the parent class; the subclass is also called the child class.

End of image description.