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Learn to use Oracle's Java documentation to realize the full potential of programming in Java.

Revised: Fri Apr 08 18:13:10 CDT 2016

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Table of contents


This module is one of a series of modules designed to teach you about Object-Oriented Programming (OOP) using Java.

I cannot overemphasize the importance of Oracle's Java documentation to aspiring Java programmers. The documentation package, which can be downloadedfor installation and local access or accessed online, contains a wealth of information.

In my opinion, it is not possible to write Java programs of any substance without frequent reference to the documentation. No one canmemorize everything that they need to know to be a successful Java programmer.

(Note that each time Oracle releases a new version of the Java Development Kit (JDK), they also release a new version of the documentation. Therefore, asnew versions are released, the links provided in this document may become outdated and may not take you to the latest version of the documentation.However, you should be able to find the latest documentation via an online search.)

Viewing tip

I recommend that you open another copy of this module in a separate browser window and use the following links to easily find and view the figureswhile you are reading about them.


  • Figure 1 . Screen shot of the API specification at startup.
  • Figure 2 . Screen shot of the API documentation after selecting the JButton class.


Small core language, large class library

The Java Platform Standard Edition programming environment consists of a small core programming language and a large class library.

(As of the date of this writing, you can view The Java Language Specification online. This specification will tell you just about everything that most programmers need to know about the corelanguage.)

The size of the class library grows with the release of each new version of the JDK, because each new version provides capabilities that didn't exist in theprevious version. New capabilities are added through the addition of new classes and new interfaces to the library.

The true power of Java resides in the class libraries

Once you understand how OOP is implemented in Java and you get beyond while loops, if statements, and other fundamental programming concepts, virtually all the power of Javaresides in:

  • Classes, interfaces, and methods in the various class libraries that you use directly.
  • Classes, interfaces, and methods in the various class libraries that you extend.
  • New classes, interfaces, and methods that you and others define.

You will always use material from Oracle's standard class libraries. You will often use material from other libraries that you create yourself, or that youobtain from sources outside of Oracle (such as Barb Ericson's multimedia library , for example) .

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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