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What is the actual value?

The actual value returned by this program is provided by a static final variable in the Double class named POSITIVE_INFINITY .

(There is also a value for NEGATIVE_INFINITY, which is the value that would be returned if one of the operands were a negative value.)

Is this a better approach?

Is this a better approach than throwing an exception as is the case for integer divide by zero?

I will let you be the judge of that.

In either case, you can test the right operand before the divide to assure that it isn't equal to zero.

Cannot use exception handling in this case

For floating divide by zero, you cannot handle the problem by using try-catch.

However, you can test the result following the divide to see if it is equal to either of the infinity values mentioned above.

Back to Question 9

Answer 8

B. Runtime Error

Explanation 8

Dividing by zero

This program attempts to divide the int value of 11 by the int value of zero.

Integer divide by zero is not allowed

This produces a runtime error and terminates the program.

The runtime error is as follows under JDK 1.3:

Exception in thread "main" java.lang.ArithmeticException: / by zero at Worker.doMixed(Ap017.java:14)at Ap017.main(Ap017.java:6)

Two ways to deal with this sort of problem

One way is to test the right operand before each divide operation to assure that it isn't equal to zero, and to take appropriate action if it is.

A second (possibly preferred) way is to use exception handling and surround the divide operation with a try block, followed by a catch block for the type

java.lang.ArithmeticException.

The code in the catch block can be designed to deal with the problem if it occurs. (Exception handling will be discussed in a future module.)

Back to Question 8

Answer 7

E. 33

Explanation 7

Integer truncation

This program illustrates the integer truncation that results when the division operator is applied to operands of the integer types.

The result of simple long division

We all know that when we divide 101 by 3, the result is 33.666666 with the sixes extending out to the limit of our arithmetic accuracy.

The result of rounding

If we round the result to the next closest integer, the result is 34.

Integer division does not round

However, when division is performed using operands of integer types in Java, the fractional part is simply discarded (not rounded) .

The result is the whole number result without regard for the fractional part or the remainder.

Thus, with integer division, 101/3 produces the integer value 33.

If either operand is a floating type ...

If either operand is one of the floating types,

  • the integer operand will be converted to the floating type,
  • the result will be of the floating type, and
  • the fractional part of the result will be preserved to some degree of accuracy

Back to Question 7

Answer 6

D. -2147483647

Explanation 6

Danger, integer overflow ahead!

This program illustrates a very dangerous situation involving arithmetic using operands of integer types. This situation involves a conditioncommonly known as integer overflow .

Questions & Answers

Application of nanotechnology in medicine
what is variations in raman spectra for nanomaterials
Jyoti Reply
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Crow Reply
what about nanotechnology for water purification
RAW Reply
please someone correct me if I'm wrong but I think one can use nanoparticles, specially silver nanoparticles for water treatment.
Damian
yes that's correct
Professor
I think
Professor
what is the stm
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is there industrial application of fullrenes. What is the method to prepare fullrene on large scale.?
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industrial application...? mmm I think on the medical side as drug carrier, but you should go deeper on your research, I may be wrong
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How we are making nano material?
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scanning tunneling microscope
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Do u think that Graphene and Fullrene fiber can be used to make Air Plane body structure the lightest and strongest. Rafiq
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what is differents between GO and RGO?
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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
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if virus is killing to make ARTIFICIAL DNA OF GRAPHENE FOR KILLED THE VIRUS .THIS IS OUR ASSUMPTION
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analytical skills graphene is prepared to kill any type viruses .
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what is Nano technology ?
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write examples of Nano molecule?
Bob
The nanotechnology is as new science, to scale nanometric
brayan
nanotechnology is the study, desing, synthesis, manipulation and application of materials and functional systems through control of matter at nanoscale
Damian
Is there any normative that regulates the use of silver nanoparticles?
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what king of growth are you checking .?
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What fields keep nano created devices from performing or assimulating ? Magnetic fields ? Are do they assimilate ?
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why we need to study biomolecules, molecular biology in nanotechnology?
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?
Kyle
yes I'm doing my masters in nanotechnology, we are being studying all these domains as well..
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why?
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what school?
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biomolecules are e building blocks of every organics and inorganic materials.
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anyone know any internet site where one can find nanotechnology papers?
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research.net
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Introduction about quantum dots in nanotechnology
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nano basically means 10^(-9). nanometer is a unit to measure length.
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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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