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This module contains review questions and answers related to generic types in Java.

Revised: Wed May 11 17:44:56 CDT 2016

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Table of Contents

Preface

This module is one in a collection of modules on Java Generics designed for teaching ITSE2317 - Java Programming (Intermediate) at Austin Community College in Austin, TX.

This and future modules in this series will be based on the Generics (Updated) section of The Java Tutorials from Oracle. (In the event that these links become broken, you should have no difficulty finding the Oracle material with an online search.)

You will find the learning resources for this module on the Oracle site at:

This module contains review questions and answers keyed to the material in the above list.

Once you study that material, you should be able to answer the review questions in this module.

Once you complete your study of all the material on generics , you should be able to answer the review questions at Questions and Exercises on the Oracle site.

The questions and the answers in this module are connected by hyperlinks to make it easy for you to navigate from the question to the answer and back again.

Questions

Question 1 .

True or False: Generics add stability to your code by making more of your bugs detectable at runtime.

Answer 1

Question 2

True or False: Generics enable types (classes and interfaces) to be parameters when defining classes, interfaces and methods.

Answer 2

Question 3

True or False: Type parameters provide a way for you to re-use the same code with different inputs. The inputs to type parameters are values.

Answer 3

Question 4

True or False: Code that uses generics provides the following benefits over non-generic code:

  • Stronger type checks at compile time.
  • Elimination of casts.
  • Enabling programmers to implement generic algorithms.

Answer 4

Question 5

True or False: A generic type is a generic class or interface that is parameterized over types.

Answer 5

Question 6

True or False: The code shown in Listing 1 will compile and run successfully producing the output shown in Figure 1 .

Listing 1 - Question 6.
/*File Q06.java ************************************************/public class Q06{public static void main(String[] args){Box box = new Box(); box.set(new Integer(5));System.out.println( ((Integer)(box.get())).intValue());}//end main }//end class Q06class Box{ private Object object;public void set(Object object){ this.object = object;}//end setpublic Object get(){ return object;}//end get }//end Box//=============================================//

Questions & Answers

Is there any normative that regulates the use of silver nanoparticles?
Damian Reply
what king of growth are you checking .?
Renato
What fields keep nano created devices from performing or assimulating ? Magnetic fields ? Are do they assimilate ?
Stoney Reply
why we need to study biomolecules, molecular biology in nanotechnology?
Adin Reply
?
Kyle
yes I'm doing my masters in nanotechnology, we are being studying all these domains as well..
Adin
why?
Adin
what school?
Kyle
biomolecules are e building blocks of every organics and inorganic materials.
Joe
anyone know any internet site where one can find nanotechnology papers?
Damian Reply
research.net
kanaga
sciencedirect big data base
Ernesto
Introduction about quantum dots in nanotechnology
Praveena Reply
what does nano mean?
Anassong Reply
nano basically means 10^(-9). nanometer is a unit to measure length.
Bharti
do you think it's worthwhile in the long term to study the effects and possibilities of nanotechnology on viral treatment?
Damian Reply
absolutely yes
Daniel
how to know photocatalytic properties of tio2 nanoparticles...what to do now
Akash Reply
it is a goid question and i want to know the answer as well
Maciej
characteristics of micro business
Abigail
for teaching engĺish at school how nano technology help us
Anassong
Do somebody tell me a best nano engineering book for beginners?
s. Reply
there is no specific books for beginners but there is book called principle of nanotechnology
NANO
what is fullerene does it is used to make bukky balls
Devang Reply
are you nano engineer ?
s.
fullerene is a bucky ball aka Carbon 60 molecule. It was name by the architect Fuller. He design the geodesic dome. it resembles a soccer ball.
Tarell
what is the actual application of fullerenes nowadays?
Damian
That is a great question Damian. best way to answer that question is to Google it. there are hundreds of applications for buck minister fullerenes, from medical to aerospace. you can also find plenty of research papers that will give you great detail on the potential applications of fullerenes.
Tarell
what is the Synthesis, properties,and applications of carbon nano chemistry
Abhijith Reply
Mostly, they use nano carbon for electronics and for materials to be strengthened.
Virgil
is Bucky paper clear?
CYNTHIA
carbon nanotubes has various application in fuel cells membrane, current research on cancer drug,and in electronics MEMS and NEMS etc
NANO
so some one know about replacing silicon atom with phosphorous in semiconductors device?
s. Reply
Yeah, it is a pain to say the least. You basically have to heat the substarte up to around 1000 degrees celcius then pass phosphene gas over top of it, which is explosive and toxic by the way, under very low pressure.
Harper
Do you know which machine is used to that process?
s.
how to fabricate graphene ink ?
SUYASH Reply
for screen printed electrodes ?
SUYASH
What is lattice structure?
s. Reply
of graphene you mean?
Ebrahim
or in general
Ebrahim
in general
s.
Graphene has a hexagonal structure
tahir
On having this app for quite a bit time, Haven't realised there's a chat room in it.
Cied
what is biological synthesis of nanoparticles
Sanket Reply
how did you get the value of 2000N.What calculations are needed to arrive at it
Smarajit Reply
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