Question: A library defines a generic class Foo in a Java-like language. A users program declares a class C and subclasses it as class D, creating

A library defines a generic class Foo in a Java-like language. A user’s program declares a class C and subclasses it as class D, creating variables fc and fd of types Foo and Foo respectively. (i) Construct a declaration of Foo along with a program of the above form containing the assignment fc=fd which, if this statement were legal, would be the cause of a later run-time error when executed. (ii) How might the language syntax be changed to optionally express that the above assignment is to be allowed, indicating any compensating restrictions required for the declaration of Foo or fc to avoid run-time errors. (iii) How do Java arrays of type T[] fit in with your answer to Part (c)(i)?

Step by Step Solution

★★★★★

3.40 Rating (153 Votes )

There are 3 Steps involved in it

1 Expert Approved Answer

Step: 1 Unlock

The detailed answer for the above question is provided below ANSWER i Declaration and Program with Runtime Error typescript Declaration of generic cla... View full answer

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 Programming Questions!

Planning is one of the most important management functions in any business. A front office managers first step in planning should involve determine the departments goals. Planning also includes...

Managing Scope Changes Case Study Scope changes on a project can occur regardless of how well the project is planned or executed. Scope changes can be the result of something that was omitted during...

This assignment reviews object-oriented programming concepts such as classes, methods, constructors, accessor methods, and access modifiers. It makes use of an array of objects as a class data...

CANMNMM January of this year. (a) Each item will be held in a record. Describe all the data structures that must refer to these records to implement the required functionality. Describe all the...

the former is expensive for arrays and the latter interacts badly with side effects". [2 marks] (iii) What parameter-passing mechanism(s) do C and Java use, and how do such languages deal with an...

Giving a suitable example, explain the effect in C++ of qualifying a member function (method) with virtual. [3 marks] (e) Recode the following Java code in C++. Minor syntactic errors will not be...

Your mission in this assignment is to write a simple text-based adventure game in the tradition of Will Crowthers pioneering Adventure program of the early 1970s. In games of this sort, the player...

1 Submission Instructions Create a folder named asuriteid-p02 where asurteid is your URITE userid (for example, if your ASURITE user id isjsmith6 then your folder would be named jsmith6-p02) and copy...

subject: software development In this assignment, youll be writing unit tests capable of exposing bugs in a code base that someone else has written. Your unit tests will provide thorough test...

This is a program in C that is like a previous assignment we did in Java, but now we have to do it in the C language. It involves the use of an ADT system to run this program assignment properly....

Choose which issue to write about; in this assignment, reflect deeply on a topic that matters to you. Each scenario represents a conflict in an organizational setting. In addition to applying ethical...

Suppose you run a small business selling handmade jewelry. You have made the following sales for the month of January: 50 pieces of necklaces sold at $25 each 40 pieces of bracelets sold at $20 each...

Which statement is NOT true regarding underwriting group health insurance? A . The premiums are reassessed annually. B . Everyone in the group is covered, regardless of their medical history. C . The...

Oil producers are interested in finding high-strength nickel alloys that are corrosion-resistant. Nickel alloys are especially susceptible to hydrogen embrittlement, a process that results when the...

The 546-nm green line of gaseous mercury falls on a double-slit apparatus. If the fifth dark fringe is at 0.113 from the centerline, whats the slit separation?

A transmission line with impedance 0.08 j 0.25 ohms is used to deliver power to a load. The load is inductive and the3 load voltage is 220 0 V rms at 60 Hz. If the load requires

Describe a family business with which you are familiar. What strengths or weaknesses do you see in the business relationships among the members active in the company?

Consider the CocaCola Company and PepsiCola Company. Both companies compete with each other in the softdrink sector. Get the most recent annual report for each company, and answer the following...

Morning Meetings are used to prepare for what?O Weekly PlanningO Monthly BudgetingO Next Day Game PlanO Pipeline Maintenance

In this exercise, we are working with the concept of an elasticity of substitution. This concept was introduced in part B of the Chapter. Thus, this entire question relates to material from part B,...

Suppose that both consumption and leisure are always normal goods. Keep in mind the underlying cause for deadweight losses from wage-distoring taxation as you answer the questions below. A: Explain...

There are many equity or fairness based arguments for government engagement in anti-poverty programs and for general government redistribution programs. But is there an efficiency case to be made...

John Beale of Stanford, California, recorded the speeds of cars driving past his house, where the speed limit read 20 mph. The mean of 100 readings was 23.84 mph, with a standard deviation of 3.56...

Using N(1152, 84), the Normal model for weights of Angus steers in Exercise 9, a) How many standard deviations from the mean would a steer weighing 1000 pounds be? b) Which would be more unusual, a...

A town's January high temperatures average 36F with a standard deviation of 10, while in July the mean high temperature is 74 and the standard deviation is 8. In which month is it more unusual to...