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Tutorial 14, Mar 27/28, 2013

Introduction to Computer Science for Majors II CPSC 233, Winter 2013. Tutorial 14, Mar 27/28, 2013. Outline. Review Quiz. Key Concepts. Advanced Java Copy constructor Pass by value Pass by reference Static members Inheritance Private, protected, public Member inheritance

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Tutorial 14, Mar 27/28, 2013

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  1. Introduction to Computer Science for Majors II CPSC 233, Winter 2013 Tutorial 14, Mar 27/28, 2013 CPSC 233, winter 2013

  2. Outline • Review • Quiz CPSC 233, winter 2013

  3. Key Concepts • Advanced Java • Copy constructor • Pass by value • Pass by reference • Static members • Inheritance • Private, protected, public • Member inheritance • Method overriding v.s method overloading • Invoking of the constructors CPSC 233, winter 2013

  4. CPSC 233, winter 2013

  5. CPSC 233, winter 2013

  6. Is the toString() method considered overloading or overriding? • Is the definition of the method println(), println(String), println(int), etc… considered overloading or overriding? • If you have multiple constructors in the same class with different arguments, is it considered overloading or overriding? CPSC 233, winter 2013

  7. Constructor Invoking • The non-argument constructor automatically calls the super class constructor which calls its super class constructor up to the class object constructor • If you want to call a constructor in the super class use: • super(……) CPSC 233, winter 2013

  8. UML Diagram (source code in practice1/) • Answer the following questions based on the given program • What are the data members that Child1 inherits from the superclass? • What are the methods that Child1 inherits from the superclass? • Identify method overriding in this program • Identify method overloading in this program • What is the output of the program (see Driver.java)?

  9. UML Diagram (source code in practice2/) • Answer the following questions based on the given program • What are the data members that Child1 inherits from the superclass(es)? • What are the methods that Child1 inherits from the superclass(es)? • What are the data members that Parent inherits from the superclass? • What are the methods that Parent inherits from the superclass? • Identify method overriding in this program • Identify method overloading in this program • What is the output of the program (see Driver.java)?

  10. Outline • Review • Quiz CPSC 233, winter 2013

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