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Figure 7 - Question 9.
This is a title

Answer 9

Question 10

True or False: The code shown in Listing 7 will compile and run successfully producing the output shown in Figure 8 .

Listing 7 - Question 10.
/*File Q10.java ************************************************/import java.awt.*; import javax.swing.*;/*Note the following inheritance hierarchy java.lang.Objectjava.awt.Component java.awt.Containerjava.awt.Window java.awt.Framejavax.swing.JFrame */public class Q10{ public static void main(String[]args){ JFrame aFrame = new JFrame("This is a title");System.out.println(aFrame.getTitle()); Foo aFoo = new Foo();aFoo.runIt(aFrame); }//end main}//end class Q10 //=============================================//class Foo{ public<T extends Object>void runIt(T ref){ System.out.println("Running runIt");System.out.println(ref.getTitle()); }//end runIt}//end Foo //=============================================//
Figure 8 - Question 10.
This is a title

Answer 10

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Answers

Answer 10

False. This is an unsuccessful call to generic method with specified upper-bound of Object. The incoming reference is received as type Object and must be downcast to at leastFrame to call the method named getTitle. The incoming parameter is received as the type ofthe specified upper-bound. This results in the compiler error shown in Figure 9 .

Figure 9 - Answer 10.
Q10.java:36: error: cannot find symbol System.out.println(ref.getTitle());^ symbol: method getTitle()location: variable ref of type T where T is a type-variable:T extends Object declared in method<T>runIt(T) 1 error

Back to Question 10

Answer 9

False. This is an unsuccessful call to generic method with default upper- bound of Object. The incoming reference is received as type Object and must bedowncast to at least Frame to call the method named getTitle. The incoming parameter is received as the type of the specified upper-bound which is Objectby default. This results in the compiler error shown in Figure 10 .

Figure 10 - Answer 9.
Q09.java:36: error: cannot find symbol System.out.println(ref.getTitle());^ symbol: method getTitle()location: variable ref of type T where T is a type-variable:T extends Object declared in method<T>runIt(T) 1 error

Questions & Answers

Application of nanotechnology in medicine
what is variations in raman spectra for nanomaterials
Jyoti Reply
I only see partial conversation and what's the question here!
Crow Reply
what about nanotechnology for water purification
RAW Reply
please someone correct me if I'm wrong but I think one can use nanoparticles, specially silver nanoparticles for water treatment.
Damian
yes that's correct
Professor
I think
Professor
what is the stm
Brian Reply
is there industrial application of fullrenes. What is the method to prepare fullrene on large scale.?
Rafiq
industrial application...? mmm I think on the medical side as drug carrier, but you should go deeper on your research, I may be wrong
Damian
How we are making nano material?
LITNING Reply
what is a peer
LITNING Reply
What is meant by 'nano scale'?
LITNING Reply
What is STMs full form?
LITNING
scanning tunneling microscope
Sahil
how nano science is used for hydrophobicity
Santosh
Do u think that Graphene and Fullrene fiber can be used to make Air Plane body structure the lightest and strongest. Rafiq
Rafiq
what is differents between GO and RGO?
Mahi
what is simplest way to understand the applications of nano robots used to detect the cancer affected cell of human body.? How this robot is carried to required site of body cell.? what will be the carrier material and how can be detected that correct delivery of drug is done Rafiq
Rafiq
if virus is killing to make ARTIFICIAL DNA OF GRAPHENE FOR KILLED THE VIRUS .THIS IS OUR ASSUMPTION
Anam
analytical skills graphene is prepared to kill any type viruses .
Anam
what is Nano technology ?
Bob Reply
write examples of Nano molecule?
Bob
The nanotechnology is as new science, to scale nanometric
brayan
nanotechnology is the study, desing, synthesis, manipulation and application of materials and functional systems through control of matter at nanoscale
Damian
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
hi
Loga
what does nano mean?
Anassong Reply
nano basically means 10^(-9). nanometer is a unit to measure length.
Bharti
how did you get the value of 2000N.What calculations are needed to arrive at it
Smarajit Reply
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what is hormones?
Wellington
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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
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