Question: Intro Java Questions: Q1: Why can a class variable of a base type be set to reference an object of a derived type, eg: Shape

Intro Java Questions:

Q1:

Why can a class variable of a base type be set to reference an object of a derived type, eg:

Shape s = new Circle("Blue", 1.0);

Q2:

How can the methods of a derived class access private instance variables of its base class?

Q3:

How is the caller's flow of control (sequence of statement execution) different when an exception is thrown from a method that it calls, vs. when the method returns normally?

Step by Step Solution

There are 3 Steps involved in it

1 Expert Approved Answer

Step: 1 Unlock blur-text-image

Question Has Been Solved by an Expert!

Get step-by-step solutions from verified subject matter experts

Step: 2 Unlock

Step: 3 Unlock

Students Have Also Explored These Related Databases Questions!

Intro Java Questions: Why can a class variable of a base type be set to reference an object of a derived type, eg: Shape s new Circle(" Blue", 1.0); Q2: How can the methods of a derived class access...

Question/Answer. You are required to write down short answers of the following questions. There is no need to write down whole program. Write down only those Java instructions which are related to...

Briefly describe ASCII and Unicode and draw attention to any relationship between them. [3 marks] (b) Briefly explain what a Reader is in the context of reading characters from data. [3 marks] A...

*JAVA ONLY* In my attached java file, I completed the code but need help with the syntax errors? import java.text.DecimalFormat; // Abstract class Shape definition public abstract class Shape { // To...

Suppose that R(A, B, C) is a relational schema with functional dependencies F = {A, B C, C B}. (i) Is this schema in 3NF? Explain. [2 marks] (ii) Is this schema in BCNF? Explain. [2 marks] (b)...

Portray in words what transforms you would have to make to your execution to some degree (a) to accomplish this and remark on the benefits and detriments of this thought.You are approached to compose...

lup ] (d) Show how a generating (or "mother") wavelet (x) can spawn a family of "daughter" wavelets jk(x) by simple shifting and scaling operations, and explain the advantages of representing...

Calculate Pearson's correlation coefficient () between the variables Weight and Head in the babyanth.complete data frame using the following formula. Include the correlation value you calculated in a...

Program Structure Because you will be working on the same project all semester, it is extremely important to organize it correctly from the beginning. Pay careful attention to the class structure...

Prolog You are approached to compose a Prolog program to work with twofold trees. Your code shouldn't depend on any library predicates and you ought to expect that the mediator is running without...

Identify the trial balance error ethical issues : Michael Bunnel is an accountant for a large resti chain with a slaea of over $ 15 million . Michael is pressured ti produce financial statements for...

A photon has a frequency of 6.0 104 Hz. (a) Convert this frequency into wavelength (nm). Does this frequency fall in the visible region? (b) Calculate the energy (in joules) of this photon. (c)...

If total assets decreased by $ 8 8 , 0 0 0 during a period of time and owner's equity increased by $ 7 1 , 0 0 0 during the same period, then the amount and direction ( increase or decrease ) of the...

CT Corp Comprehensive Question Canadian Tire Corporation, Limited (Canadian Tire) is a family of companies that includes a retail segment and a financial services division, among others. The retail...

a. Describe the encounter. What made it intercultural?

2. Describe three approaches to the study of intercultural communication.

c. Describe how you felt after the encounter, and explain why you think you felt as you did.