L9 Project Testing

.pdf

School

The University of Sydney *

*We aren’t endorsed by this school

Course

5619

Subject

Electrical Engineering

Date

Oct 30, 2023

Type

pdf

Pages

24

Uploaded by MateCaribou3742

Report
The University of Sydney Page 1 ELEC5619 – Object Oriented Application Frameworks Nan Yang School of Electrical and Information Engineering The University of Sydney
The University of Sydney Page 2 Contents Polymorphism
The University of Sydney Page 3 Polymorphism Basics Inheritance allows you to define a base class and derive classes from the base class Polymorphism allows you to make changes in the method definition for the derived classes and have those changes apply to methods written in the base class
The University of Sydney Page 4 Polymorphism Consider an array of Person Person[] people = new Person[4]; Since Student and Undergraduate are types of Person , we can assign them to Person variables people[0] = new Student("DeBanque, Robin", 8812); people[1] = new Undergraduate("Cotty, Manny", 8812, 1); people[2] = new Student("DeBanque, Robin", 8812); people[3] = new Undergraduate ("Bugg, June", 9901, 4);
The University of Sydney Page 5 Polymorphism Given: Person[] people = new Person[4]; people[0] = new Student("DeBanque, Robin", 8812); When invoking: people[0].writeOutput(); Which writeOutput() is invoked, the one defined for Student or the one defined for Person ? Answer: The one defined for Student
The University of Sydney Page 6 Polymorphism Example View sample class class PolymorphismDemo Output Listing 8.6
Your preview ends here
Eager to read complete document? Join bartleby learn and gain access to the full version
  • Access to all documents
  • Unlimited textbook solutions
  • 24/7 expert homework help

Browse Popular Homework Q&A

Q: You invested $ 4000 between two accounts paying 6 % and 8 % annual​ interest, respectively. If the…
Q: 5) Graph the equation: 2x - 5y = 20 on the graph below.
Q: Your company's outgoing CIO has put your name forward for consideration as a member of the search…
Q: 2. A 400-N weight is supported by a uniform beam with a mass of 30-kg and a length of 1.6 meters.…
Q: 1. What is your monthly payment if you choose 0% financing for 48 months? Round to the nearest…
Q: 5) Subtract 2x²-3x + 1 from 5x² + 4x - 3. a. -3x² - 7x+4 d. -3x² + 7x +4 b. 3x²+x-4 e. -3x² - 7x-2…
Q: A certain indicator, HA has a Ka value of 6.3×10−8. The protonated form of the indicator is red and…
Q: a. Robin Hood (mass = 96.25 kg) is escaping by cutting the rope and flying upward as the chandelier…
Q: 2. A 175-kg roller coaster car is supposed to make a vertical loop with a diameter of 13.5 m, with…
Q: Which of the following is not included in GDP? 1) the payments for a chiropractor's services 2) cash…
Q: This question concerns block cipher modes. We will use a simple affine cipher, which can be…
Q: List and describe each step involved in the Software Development Life Cycle.
Q: what is the answer
Q: Consider the Ivp: x²+4+x=0 x(0)=-1, x²(0) = -3 Using the Euler method with a time step of At = 0.5…
Q: se that the Achilles tendon diameters in the general population have a mean of 5.97 millimeters…
Q: For the bridge circuit given, Vsupply = 70V, and R₁= 20, R₂=402, R3=37.50, R4-509 and R5= 1000. For…
Q: Evaluate F. dr where F(x, y) = x²y² + 2xyj and C is the boundary of the square (clockwise) through…
Q: Can you explain in your own words in one brief paragraph why your journey with technology can never…
Q: Which methods should be considered before delivering a presentation? Presentation is a valuable…
Q: Which of the following are examples of why people study negotiations? To eliminate the possibility…
Q: Calculate Tu, Tu, and n(u, v) for the parametrized surface at the given point. Then find the…
Q: Cynthia Knott's oyster bar buys fresh Louisiana oysters for $4 per pound and sells them for $10 per…