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Answer 5

A. Compiler Error

Explanation 5

Public classes in separate files

Java requires that the source code for every public class be contained in a separate file. In this case, the source code for two public classes wascontained in a single file. The following compiler error was produced by JDK 1.3:

Ap155.java:18: class Ap155a is public, should be declared in a file named Ap155a.javapublic class Ap155a{

Back to Question 5

Answer 4

This program produces both of the following:

  • C. 5 10 15
  • B. Runtime Error

Explanation 4

The NoSuchElementException

This program defines, creates, and uses a very simple container object for the purpose of illustrating the NoSuchElementException .

The code in the following fragment shows the beginning of a class named MyContainer from which the container object is instantiated.

class 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()

A wrapper for an array object

This class is essentially a wrapper for a simple array object of type int . An object of the class provides a method named put , which can be used to store an int value into the array. The put method receives two parameters. The first parameter specifies the index of the elementwhere the value of the second parameter is to be stored.

Throw NoSuchElementException on index out of bounds

The put method tests to confirm that the specified index is within the positive bounds of the array. If not, it uses the throw keyword to throw an exception of the type NoSuchElementException . Otherwise, it stores the incoming data value in the specified index position in the array.

(Note that a negative index will cause an ArrayIndexOutOfBoundsException instead of a NoSuchElementException to be thrown.)

The get method

An object of the MyContainer class also provides a get method that can be used to retrieve the value stored in a specified index.

public int get(int idx){ if(idx>(array.length-1)){ throw newNoSuchElementException(); }else{return array[idx];}//end else }//end put()

The get method also tests to confirm that the specified index is within the positive bounds of the array. If not, it throws an exceptionof the type NoSuchElementException . Otherwise, it returns the value stored in the specified index of the array.

(As noted earlier, a negative index will cause an ArrayIndexOutOfBoundsException instead of a NoSuchElementException to bethrown.)

The NoSuchElementException

Thus, this container class illustrates the general intended purpose of the NoSuchElementException .

Instantiate and populate a container

The remainder of the program simply exercises the container. The code in the following fragment instantiates a new container, and uses the put method to populate each of its three available elements with the values 5, 10,and 15.

void doIt(){ MyContainer ref =new MyContainer(); ref.put(0,5);ref.put(1,10); ref.put(2,15);

Questions & Answers

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 ?
s.
what is the Synthesis, properties,and applications of carbon nano chemistry
Abhijith Reply
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
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
what's the easiest and fastest way to the synthesize AgNP?
Damian Reply
China
Cied
types of nano material
abeetha Reply
I start with an easy one. carbon nanotubes woven into a long filament like a string
Porter
many many of nanotubes
Porter
what is the k.e before it land
Yasmin
what is the function of carbon nanotubes?
Cesar
I'm interested in nanotube
Uday
what is nanomaterials​ and their applications of sensors.
Ramkumar Reply
what is nano technology
Sravani Reply
what is system testing?
AMJAD
preparation of nanomaterial
Victor Reply
Yes, Nanotechnology has a very fast field of applications and their is always something new to do with it...
Himanshu Reply
good afternoon madam
AMJAD
what is system testing
AMJAD
what is the application of nanotechnology?
Stotaw
In this morden time nanotechnology used in many field . 1-Electronics-manufacturad IC ,RAM,MRAM,solar panel etc 2-Helth and Medical-Nanomedicine,Drug Dilivery for cancer treatment etc 3- Atomobile -MEMS, Coating on car etc. and may other field for details you can check at Google
Azam
anybody can imagine what will be happen after 100 years from now in nano tech world
Prasenjit
after 100 year this will be not nanotechnology maybe this technology name will be change . maybe aftet 100 year . we work on electron lable practically about its properties and behaviour by the different instruments
Azam
name doesn't matter , whatever it will be change... I'm taking about effect on circumstances of the microscopic world
Prasenjit
how hard could it be to apply nanotechnology against viral infections such HIV or Ebola?
Damian
silver nanoparticles could handle the job?
Damian
not now but maybe in future only AgNP maybe any other nanomaterials
Azam
Hello
Uday
I'm interested in Nanotube
Uday
this technology will not going on for the long time , so I'm thinking about femtotechnology 10^-15
Prasenjit
can nanotechnology change the direction of the face of the world
Prasenjit Reply
At high concentrations (>0.01 M), the relation between absorptivity coefficient and absorbance is no longer linear. This is due to the electrostatic interactions between the quantum dots in close proximity. If the concentration of the solution is high, another effect that is seen is the scattering of light from the large number of quantum dots. This assumption only works at low concentrations of the analyte. Presence of stray light.
Ali Reply
how did you get the value of 2000N.What calculations are needed to arrive at it
Smarajit Reply
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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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