|suppose that we wanted to create a subclass named SubClass of another class named SuperClass. We would write:|
|class SubClass extends SuperClass
. . .
|This declares that SubClass is the subclass of the Superclass class. It also implicitly declares that SuperClass is the superclass of SubClass. A subclass also inherits variables and methods from its superclass's superclass, and so on up the inheritance tree.|
|A Java class can have only one direct superclass.|
|Java does not support multiple inheritance.|
|Creating a subclass can be as simple as including the extends clause in your class declaration.|