Defining Subclasses

• Unlike C++, which allows multiple inheritance, a Java class can only inherit from a single parent class, which is called its superclass

• If a class inherits from a superclass, all the public and protected members of the superclass are automatically defined for it

• Defining subclasses is accomplished with the extends clause on the class definition

• If the extends clause is not used in a class definition then its superclass is the class called Object