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Listing 4 . Listing for Question 4.
import java.util.NoSuchElementException; public class Ap154{public static void main( String args[]){ new Worker().doIt();}//end main() }//end class Ap154class Worker{ void doIt(){MyContainer ref = new MyContainer();ref.put(0,5); ref.put(1,10);ref.put(2,15);System.out.print(ref.get(0)+" "); System.out.print(ref.get(1)+" ");System.out.print(ref.get(2)+" "); System.out.print(ref.get(3)+" ");}//end doIt() }// end class Workerclass MyContainer{ private int[]array = new int[3];public void put(int idx, int data){if(idx>(array.length-1)){ throw newNoSuchElementException(); }else{array[idx] = data;}//end else }//end put()public int get(int idx){if(idx>(array.length-1)){ throw newNoSuchElementException(); }else{return array[idx];}//end else }//end put()}//end class MyContainer

Answer and Explanation

Question 5

The source code in Listing 5 is contained in a single file named Ap155.java

What output is produced by the program?

  • A. Compiler Error
  • B. Runtime Error
  • C. OK
  • D. None of the above.
Listing 5 . Listing for Question 5.
public class Ap155{ public static void main(String args[]){new Ap155a().doIt(); }//end main()}//end class Ap155 public class Ap155a{void doIt(){ System.out.println("OK");}//end doIt() }// end class Ap155a

Answer and Explanation

Question 6

A Java application consists of the two source files shown in Listing 6 and Listing 7 having names of AP156.java and AP156a.java

What output is produced by this program?

  • A. Compiler Error
  • B. Runtime Error
  • C. OK
  • D. None of the above.
Listing 6 . Listing for Question 6.
public class Ap156{ public static void main(String args[]){new Ap156a().doIt(); }//end main()}//end class Ap156
Listing 7 . Listing for Question 6.
public class Ap156a{ void doIt(){System.out.println("OK"); }//end doIt()}// end class Ap156a

Answer and Explanation

Question 7

Explain the purpose of the terms @param and @return in Listing 8 . Also explain any of the other terms that make sense to you.

Listing 8 . Listing for Question 7.
public class Ap157{/** * Returns the character at the* specified index. An index ranges from *<code>0</code>to *<code>length() - 1</code>. ** @param index index of desired * character.* @return the desired character. */public char charAt(int index) { //Note, this method is not intended// to be operational. Rather, it // ...return 'a';//return dummy char }//end charAt method}//end class

Answer and Explanation

Question 8

What output is produced by the program shown in Listing 9 ?

  • A. Compiler Error
  • B. Runtime Error
  • C. Tom
  • D. None of the above.
Listing 9 . Listing for Question 8.
public class Ap158{ public static void main(String args[]){new Worker().doIt(); }//end main()}//end class Ap158 class Worker{void doIt(){ char[]ref; System.out.print(ref);System.out.print(" "); ref[0]= 'T'; ref[1]= 'o'; ref[2]= 'm'; System.out.println(ref);}//end doIt() }// end class Worker

Answer and Explanation

Questions & Answers

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
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
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?
carbon nanotubes has various application in fuel cells membrane, current research on cancer drug,and in electronics MEMS and NEMS etc
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
how did you get the value of 2000N.What calculations are needed to arrive at it
Smarajit Reply
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