Lesson 10
Java Module Conclusion
- A fully encapsulated class declares all of its variables as private and provides methods for getting and setting the properties represented by field variables.
- A non-inner class may specify the modifiers public, abstract, and final.
- A final class may not be extended.
- "is a" identifies subclass relationships, while "has a" identifies member variables.
- Constructors are not inherited.
- A default constructor is supplied by the compiler if no other constructors are provided.
- this() refers to a constructor of the same class. super() refers to a superclass constructor.
- Non-static inner classes may not have static members. Static inner classes may not have non-static members.
- Local inner classes may only access variables and parameters that are declared as final and assigned a value.
- Anonymous inner classes are unnamed inner classes that are declared and created at the same time.
- Classification: The organization of information into hierarchical categories.
- Inheritance: The passing on of design information from a superclass to a subclass.
- Single inheritance: The inheritance of class members from a single parent.
- Multiple inheritance: The inheritance of class members from more than one parent.
- Encapsulation: A quality of classes with well-defined and controlled interfaces.
- Polymorphism
- Dynamic binding
- Abstract method
- Member
- Subclass
- Superclass
- Strict subclass
- Direct superclass
- Access modifier
- Nested class
- Enclosing scope
- Top-level class
- Scope: The extent of the context of a definition.
- Local inner class: An inner class that is declared local to a block of code.
Click the Quiz link below to check your understanding of Java classes, interfaces, and objects.
Anonymous Class - Quiz
Anonymous Class - Quiz
