<< Chapter < Page Chapter >> Page >
This module contains review questions and answers keyed to the module titled Java4210: Getting Started with Generics

Revised: Wed May 11 17:31:29 CDT 2016

This page is included in the following Books:

Table of Contents

Preface

This module contains review questions and answers keyed to the module titled Java4210: Getting Started with Generics .

The questions and the answers 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: When Java version 1.5 was released, it contained many new language features, including:

  • Generics
  • Enhanced for Loop
  • Autoboxing/Unboxing
  • Collections
  • Typesafe Enums
  • Varargs
  • Static Import
  • Metadata

Answer 1

Question 2

True or False: Using Java version1.7, the code shown in Listing 1 will compile without warnings, errors, or other messages being generated by thecompiler.

Listing 1 - Question 2
/*File Q02.java ************************************************/import java.util.*; public class Q02{ArrayList var1 = new ArrayList();void runIt(){ var1.add(new Date());//Note the required cast in the following // statement.System.out.println( ((Date)var1.get(0)).getTime());}//runIt public static void main(String[]args){ new Q02().runIt();}//end main}//end class Q02 //=============================================//

Answer 2

Question 3

Generics was introduced in Java v1.5 to provide which of the following:

  • A. Code simplicity
  • B. Compile-time type safety
  • C. A clear and straightforward code syntax.
  • D. None of the above.

Answer 3

Question 4

True or False: The use of generics is limited to the Java Collections framework.

Answer 4

Question 5

True or False: The Java v1.7 compiler produces an error message when an attempt is made to compile the code shown in Listing 1 .

Answer 5

Question 6

True or False: When the code in Listing 1 is compiled using the -Xlint:unchecked switch with Java v1.7, the compiler produces:

  • A. An error message
  • B. A warning
  • C. None of the above

Answer 6

Question 7

True or False: The program code shown in Listing 2 will compile and execute successfully to produce an output similar to that shownin Figure 1 .

Listing 2 - Question 7.
/*File Q07.java ************************************************/import java.util.*; public class Q07{ArrayList var1 = new ArrayList();void runIt(){ var1.add(new Date());System.out.println( (var1.get(0)).getTime());}//runIt public static void main(String[]args){ new Q07().runIt();}//end main}//end class Q07 //=============================================//
Figure 1 - Question 7.
1378054267172

Answer 7

Question 8

What modification must be made to the code shown in Listing 2 to cause it to compile and execute successfully?

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
Privacy Information Security Software Version 1.1a
Good
Got questions? Join the online conversation and get instant answers!
Jobilize.com Reply

Get the best Algebra and trigonometry course in your pocket!





Source:  OpenStax, Object-oriented programming (oop) with java. OpenStax CNX. Jun 29, 2016 Download for free at https://legacy.cnx.org/content/col11441/1.201
Google Play and the Google Play logo are trademarks of Google Inc.

Notification Switch

Would you like to follow the 'Object-oriented programming (oop) with java' conversation and receive update notifications?

Ask