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Listing 7 - Question 13.
/*File Q13.java ************************************************/import java.util.*; public class Q13{ArrayList<Integer>var1 = new ArrayList<Integer>();void runIt(){var1.add(new Integer(1)); var1.add(new Integer(2));var1.add(new Integer(3));//Get an iterator Iterator iter = var1.iterator();//Perform the iterationwhile(iter.hasNext()){ System.out.println(iter.next().intValue());}//end while loop}//end runItpublic static void main(String[] args){new Q13().runIt(); }//end main}//end class Q13//=============================================//
Figure 5 - Question 13.
1 23

Answer 13



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Answer 13

False. This program produces the error shown in Figure 6 below. You must qualify the iterator as shown in Listing 8 to correct the error. If you don't qualify the iterator, the reference is retrieved fromthe list as type Object. The Object class neither defines nor inherits a method named intValue.

Listing 8 - Answer 13.
/*File A13.java ************************************************/import java.util.*; public class A13{ArrayList<Integer>var1 = new ArrayList<Integer>();void runIt(){var1.add(new Integer(1)); var1.add(new Integer(2));var1.add(new Integer(3));//Get an iterator Iterator<Integer>iter = var1.iterator();//Perform the iteration while(iter.hasNext()){System.out.println(iter.next().intValue()); }//end while loop}//end runItpublic static void main(String[]args){ new Q13().runIt();}//end main }//end class A13//=============================================//
Figure 6 - Answer 13.
Q13.java:22: error: cannot find symbol System.out.println(iter.next().intValue());^ symbol: method intValue()location: class Object 1 error

Back to Question 13

Answer 12

False. This program produces the compiler error shown in Figure 7 below. This is the result of attempting to store an object's reference of type String in acollection reserved exclusively for references to objects of type Date.

Figure 7 - Answer 12.
Q12.java:13: error: no suitable method found for add(String) var1.add("abcd");^ method ArrayList.add(int,Date) is not applicable(actual and formal argument lists differ in length) method ArrayList.add(Date) is not applicable(actual argument String cannot be converted to Date by method invocation conversion)1 error

Questions & Answers

what is the stm
Brian Reply
is there industrial application of fullrenes. What is the method to prepare fullrene on large scale.?
industrial application...? mmm I think on the medical side as drug carrier, but you should go deeper on your research, I may be wrong
How we are making nano material?
what is a peer
What is meant by 'nano scale'?
What is STMs full form?
scanning tunneling microscope
how nano science is used for hydrophobicity
Do u think that Graphene and Fullrene fiber can be used to make Air Plane body structure the lightest and strongest. Rafiq
what is differents between GO and RGO?
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
what is Nano technology ?
Bob Reply
write examples of Nano molecule?
The nanotechnology is as new science, to scale nanometric
nanotechnology is the study, desing, synthesis, manipulation and application of materials and functional systems through control of matter at nanoscale
Is there any normative that regulates the use of silver nanoparticles?
Damian Reply
what king of growth are you checking .?
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
yes I'm doing my masters in nanotechnology, we are being studying all these domains as well..
what school?
biomolecules are e building blocks of every organics and inorganic materials.
anyone know any internet site where one can find nanotechnology papers?
Damian Reply
sciencedirect big data base
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.
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
How can I make nanorobot?
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
how can I make nanorobot?
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.
how did you get the value of 2000N.What calculations are needed to arrive at it
Smarajit Reply
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