This allows you to establish a hierarchy for your classes. A class that inherits ... defined with the extends keyword. For example, the syntax ClassB extends ClassA establishes ClassB as a subclass of ...

This allows you to establish a hierarchy for your classes. A class that inherits ... defined with the extends keyword. For example, the syntax ClassB extends ClassA establishes ClassB as a subclass of ...

You can genericize the interface with any valid Java class. When the class is executed, the result is the text string lambda-tutorial.txt written to the console. If you implement the UnaryOperator ...