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Figure 4 . Answer 13.
Java3010rb.java:47: error: cannot find symbol return (refToObj).getData();^ symbol: method getData()location: variable refToObj of type Object 1 error

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Answer 12

False. Every class that doesn't explicitly extend another class automatically extends the class named Object .

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Answer 11

False. An anonymous object is an object whose reference is not saved in a named reference variable. An anonymous class is something entirely different.

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Answer 10

True. Listing 2 shows an example of this syntax. (Note the use of the curly brackets in Listing 2 as opposed to the use of square brackets in Listing 1 .)

Listing 2 . Answer 10.
Object[] objRef = {new Java3010raMyClassA(randomNumber)};

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Answer 9

False. Every array object contains a special property named length that contains the number of elements in an array. It is always possible todetermine the number of elements in an array object at runtime by accessing the value of the length property for the array object.

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Answer 8


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Answer 7

False. The array structure that is encapsulated in an array object may have none, one, or more elements.

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Answer 6

False. Unless code is written to do otherwise, the elements in a new array object are initialized with the standard default values for the types involved (zero, false , or null) .

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Answer 5

False. When the declared type of an array is the type of an object (array object or ordinary object), references to the objects are stored in thearray elements and the objects actually exist elsewhere in memory.

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Answer 4


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Answer 3


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Answer 2

True. Multidimensional arrays are created by creating tree structures of one-dimensional array objects.

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Answer 1

False. The program produces the compiler error shown in Figure 2 .

Figure 2 . Answer 1.
Java3010ra.java:12: error: illegal start of expression Object[]objRef = [new Java3010raMyClassA(randomNumber)];^ Java3010ra.java:12: error: ';' expectedObject[] objRef = [new Java3010raMyClassA(randomNumber)];

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This section contains a variety of miscellaneous information.

Housekeeping material
  • Module name: Java3010r Review
  • File: Java3010.htm
  • Published: 02/14/13

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Affiliation : I am a professor of Computer Information Technology at Austin Community College in Austin, TX.


Questions & Answers

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
what's the easiest and fastest way to the synthesize AgNP?
Damian Reply
how did you get the value of 2000N.What calculations are needed to arrive at it
Smarajit Reply
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