Java : Java Glossary

1. Java is a tool that lets you direct the computer to do computations, keep track of things or draw graphs. Many of the more complex animations and calculating tools you see on the Internet are Java Applets running inside your browser or are Java Servlets running on server machines. The main advantages of Java over other computer languages are:
   1. It was designed for the web.
   2. Java programs run unmodified on any computer (without even recompiling — converting the human-friendly *.java form of the program to the machine-friendly *.class/*.jar form). With ordinary computer languages, you need a separate version of each program specially modified for each platform.
   3. Java programs have an elaborate safety net to prevent them from doing any damage to themselves or others. The other commonly used languages have no such safety net.
   Why learn Java? It might be sufficient to know that there are three Java jobs waiting for every Java programmer.
2. Java is a computer language like a stripped down C++ that has been designed so that its object modules can run unmodified on many different platforms. Its primary characteristics are safety and security. The language was originally named Oak, but it turned out that name was already taken. Over coffee, somebody suggested Java as a replacement. Since programmers are the occupationally prone to caffeine addiction, the name seemed auspicious.James Gosling is considered the father of Java. More recently Bill Joy and Arthur Van’t Hoff are seen also as the Java illuminaries.

Advantages of Coding A Project In Java

• WORA (Write Once, Run Anywhere). You don’t even need to recompile or relink for each platform. The same class files run everywhere.
• Java is supported on a huge number of platforms.
• There is an enormous standard class library, and all kinds of three third party class libraries.
• Java is free of freakish features. This comes from being WORA.
• Java can run with Hotspot or Jet native compilation, generating machine code better than that produced by assembler programmers.
• Java class files are compact.
• Java lets you postpone many decisions until run time that in other languages must be specified at compile time.
• You can get all the tools you need to develop and deploy without spending a dime.

Disadvantages of Coding A Project In Java

• It is controlled by Oracle/Sun. They have been well behaved up to now, but there is no guarantee they won’t decide to screw their customers in future.
• It is verbose.
• Did I mention it is very verbose.
• The run time is quite slow to start, unless you use native compilation.

	recommend book⇒The Java Programing Language, fourth edition
	by:	Ken Arnold, James Gosling, David Holmes	978-0-321-34980-4	paperback
	publisher:	Prentice Hall
	published:	2005-08-27
This is not The Java Language Specification, the formal language specification. This is not a suitable book for beginners. The fifth edition, 978-0-13-276168-0, is due out 2013-04-11.
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