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It is fairly common for an odometer to be able to store and to display the set of all positive values ranging from zero to 99999. Ifyour odometer is designed to store that set of values and if you drive your car more than 99999 miles, it is likely that the odometer willroll over and start back at zero after you pass the 99999-mile mark. In other words, that particular odometer does not have the ability tostore a value of 100,000 miles. Once you pass the 99999-mark, the data stored in the odometer is corrupt.

Now let's return to the Java type named short

Assume that you have two instances of the type short in a Java program. What are the operations that you can perform on those instances? For example:

  • You can add them together.
  • You can subtract one from the other.
  • You can multiply one by the other.
  • You can divide one by the other.
  • You can compare one with the other to determine which is algebraically larger.

There are some other operations that are allowed as well. In fact, there is a well-defined set of operations that you are allowed toperform on those instances. That set of operations is defined in the specification for the type short .

What if you want to do something different?

However, if you want to perform an operation that is not allowed by the type specification, then you will have to find another way toaccomplish that purpose.

For example, some programming languages allow you to raise whole-number types to a power (examples: four squared, six cubed, nine to the fourth power, etc.) . However, that operation is not allowed by the Java specification for the type short . If you need to do that operation with a data value of the Java short type, you must find another way to do it.

Two major categories of type

Java data types can be subdivided into two major categories:

  • Primitive types
  • User-defined or reference types

These categories are discussed in more detail in the following sections.

Primitive types

Java is an extensible programming language

What this means is that there is a core component to the language that is always available. Beyond this, individual programmers can extendthe language to provide new capabilities. The primitive types discussed in this section are the types that are part of the core language.A later section will discuss user-defined types that become available when a programmer extends the language.

More subdivision

It seems that when teaching programming, I constantly find myself subdividing topics into sub-topics. I am going to subdivide the topic of PrimitiveTypes into four categories:

  • Whole-number types
  • Floating-point types
  • Character types
  • Boolean types

Hopefully this categorization will make it possible for me to explain these types in a way that is easier for you to understand.

Whole-number types

The whole-number types, often called integer types, are relatively easy to understand. These are types that can be used to representdata without fractional parts.

Applesauce and hamburger

For example, consider purchasing applesauce and hamburger. At the grocery store where I shop, I am allowed to purchase cans of applesauceonly in whole-number or integer quantities.

Questions & Answers

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
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 ?
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?
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
types of nano material
abeetha Reply
I start with an easy one. carbon nanotubes woven into a long filament like a string
many many of nanotubes
what is the k.e before it land
what is the function of carbon nanotubes?
I'm interested in nanotube
what is nanomaterials​ and their applications of sensors.
Ramkumar Reply
what is nano technology
Sravani Reply
what is system testing?
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
what is system testing
what is the application of nanotechnology?
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
anybody can imagine what will be happen after 100 years from now in nano tech world
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
name doesn't matter , whatever it will be change... I'm taking about effect on circumstances of the microscopic world
how hard could it be to apply nanotechnology against viral infections such HIV or Ebola?
silver nanoparticles could handle the job?
not now but maybe in future only AgNP maybe any other nanomaterials
I'm interested in Nanotube
this technology will not going on for the long time , so I'm thinking about femtotechnology 10^-15
can nanotechnology change the direction of the face of the world
Prasenjit 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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