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Abnormal termination

While experiencing abnormal program termination isn't all that great, it is better than the alternative of using arrays whose boundaries aren't protected.Programming languages that don't protect the array boundaries simply overwrite other data in memory whenever the array boundaries are exceeded.

Attempt to access out of bounds element

The code in the for loop in the following fragment attempts to access the array element at the index value 5. That index value is out ofbounds of the array.

for(int j = 0;j<6;j++){ System.out.print(myArray[i][j]+ " "); }//end inner for loop

Because that index value is outside the boundaries of the array, an ArrayIndexOutOfBoundsException is thrown. The exception isn't caught and handled by program code, so the program terminates abnormally at runtime.

This program also illustrates that it is usually better to use the length property of an array to control iterative loops than to use hard-coded limitvalues, which may be coded erroneously.

Back to Question 5

Answer 4

C. 1 1 1 1 1 1 2 3 4 51 3 5 7 9

Explanation 4

A two-dimensional array

This program illustrates how to create, populate, and process a two-dimensional array with three rows and five columns.

(As mentioned earlier, a Java programmer who understands the fine points of the language probably wouldn't call this a two-dimensional array. Rather,this is a one-dimensional array containing three elements. Each of those elements is a reference to a one-dimensional array containing five elements.That is the more general way to think of Java arrays.)

The following code fragment creates the array, using one of the acceptable formats discussed in Question 3 .

int myArray[][]; myArray = new int[3][5];

Populating the array

The next code fragment uses a pair of nested for loops to populate the elements in the array with values of type int .

for(int i=0;i<myArray.length;i++){ for(int j=0;j<myArray[0].length;j++){myArray[i][j]= i*j + 1; }//end innerfor loop }//end outer for loop

This is where the analogy of a two-dimensional array falls apart. It is much easier at thispoint to think in terms of a three-element primary array, each of whose elements contains a reference to a secondary array containing five elements. (Note that in Java, the secondary arrays don't all have to be of the same size. Hence, itis possible to create odd-shaped multi-dimensional arrays in Java.)

Using the length property

Pay special attention to the two chunks of code that use the length properties of the arrays to determine the number of iterations for each of the for loops.

The first chunk determines the number of elements in the primary array. In this case, the length property contains the value 3.

The second chunk determines the number of elements in the secondary array that is referred to by the contents of the element at index 0 in theprimary array. (Think carefully about what I just said.)

In this case, the length property of the secondary array contains the value 5.

Questions & Answers

can someone help me with some logarithmic and exponential equations.
Jeffrey Reply
sure. what is your question?
ninjadapaul
20/(×-6^2)
Salomon
okay, so you have 6 raised to the power of 2. what is that part of your answer
ninjadapaul
I don't understand what the A with approx sign and the boxed x mean
ninjadapaul
it think it's written 20/(X-6)^2 so it's 20 divided by X-6 squared
Salomon
I'm not sure why it wrote it the other way
Salomon
I got X =-6
Salomon
ok. so take the square root of both sides, now you have plus or minus the square root of 20= x-6
ninjadapaul
oops. ignore that.
ninjadapaul
so you not have an equal sign anywhere in the original equation?
ninjadapaul
Commplementary angles
Idrissa Reply
hello
Sherica
im all ears I need to learn
Sherica
right! what he said ⤴⤴⤴
Tamia
what is a good calculator for all algebra; would a Casio fx 260 work with all algebra equations? please name the cheapest, thanks.
Kevin Reply
a perfect square v²+2v+_
Dearan Reply
kkk nice
Abdirahman Reply
algebra 2 Inequalities:If equation 2 = 0 it is an open set?
Kim Reply
or infinite solutions?
Kim
The answer is neither. The function, 2 = 0 cannot exist. Hence, the function is undefined.
Al
y=10×
Embra Reply
if |A| not equal to 0 and order of A is n prove that adj (adj A = |A|
Nancy Reply
rolling four fair dice and getting an even number an all four dice
ramon Reply
Kristine 2*2*2=8
Bridget Reply
Differences Between Laspeyres and Paasche Indices
Emedobi Reply
No. 7x -4y is simplified from 4x + (3y + 3x) -7y
Mary Reply
is it 3×y ?
Joan Reply
J, combine like terms 7x-4y
Bridget Reply
im not good at math so would this help me
Rachael Reply
yes
Asali
I'm not good at math so would you help me
Samantha
what is the problem that i will help you to self with?
Asali
how do you translate this in Algebraic Expressions
linda Reply
Need to simplify the expresin. 3/7 (x+y)-1/7 (x-1)=
Crystal Reply
. After 3 months on a diet, Lisa had lost 12% of her original weight. She lost 21 pounds. What was Lisa's original weight?
Chris 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
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
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
the Beer law works very well for dilute solutions but fails for very high concentrations. why?
bamidele 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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