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

Revised: Wed May 11 17:54:19 CDT 2016

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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 document.

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.


Question 1 .

True or False: Generic methods are methods that introduce their own type parameters.

Answer 1

Question 2

True or False: Defining a generic method is similar to declaring a generic type. The type parameter's scope is limited to the class in which it is declared.

Answer 2

Question 3

True or False: Generic methods may be either static or non-static.

Answer 3

Question 4

True or False: Generic class constructors are not allowed.

Answer 4

Question 5

Design and write a class named A05Foo which, when combined with the class defined in Listing 1 will compile, run, and produce the output shown in Figure 1 .

Listing 1 - Question 5.
/*File Q05.java ************************************************/public class Q05{public static void main(String[] args){A05Foo fooA = new A05Foo(); System.out.println(fooA.cat("abcd ","efgh"));System.out.println( fooA.cat("abcd ",new Integer(500)));System.out.println( fooA.cat(new Integer(500)," abcd"));}//end main }//end class Q05//=============================================//
Figure 1 - Question 5.
abcd efgh abcd 500500 abcd

Answer 5

Question 6

Design and write a class named A06Foo which, when combined with the class defined in Listing 2 will compile, run, and produce the output shown in Figure 2 .

Listing 2 - Question 6.
/*File Q06.java ************************************************/public class Q06{public static void main(String[] args){A06Foo<String>fooA = new A06Foo<>(); fooA.set("_ijklm");System.out.println(fooA.cat("abcd ","efgh")); System.out.println(fooA.cat("abcd ",new Integer(500))); System.out.println(fooA.cat(new Integer(500)," abcd")); }//end main}//end class Q06 //=============================================//

Questions & Answers

what does nano mean?
Anassong Reply
nano basically means 10^(-9). nanometer is a unit to measure length.
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
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
characteristics of micro business
for teaching engĺish at school how nano technology help us
Do somebody tell me a best nano engineering book for beginners?
s. Reply
what is fullerene does it is used to make bukky balls
Devang Reply
are you nano engineer ?
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.
what is the actual application of fullerenes nowadays?
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.
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.
is Bucky paper clear?
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.
Do you know which machine is used to that process?
how to fabricate graphene ink ?
for screen printed electrodes ?
What is lattice structure?
s. Reply
of graphene you mean?
or in general
in general
Graphene has a hexagonal structure
On having this app for quite a bit time, Haven't realised there's a chat room in it.
what is biological synthesis of nanoparticles
Sanket Reply
what's the easiest and fastest way to the synthesize AgNP?
Damian Reply
types of nano material
abeetha Reply
I start with an easy one. carbon nanotubes woven into a long filament like a string
many many of nanotubes
what is the k.e before it land
what is the function of carbon nanotubes?
I'm interested in nanotube
what is nanomaterials​ and their applications of sensors.
Ramkumar Reply
what is nano technology
Sravani Reply
what is system testing?
preparation of nanomaterial
Victor Reply
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