Category:Java: Difference between revisions

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{{language
{{language|Java}}The '''Java''' programming language, developed by [[Sun Microsystems]], is a language aimed at allowing high performance, cross-platform application development.
|exec=bytecode
 
|site=http://www.oracle.com/technetwork/java/
Java source files (.java files) are typically [[Compiler|compiled]] to an intermediate [[bytecode]] language (.class files) and executed by a [[Java Virtual Machine]]. Most modern JVMs further compile the bytecode of a Java program into your processors' native machine code during execution. This native code translation is done via a [[Just-In-Time|JIT]] compiler that is built-in to the JVM. Some Java compilers (such as [[GCJ]]) can compile Java code to native machine code ahead-of-time rather than just-in-time.
|gc=yes
|parampass=value
|safety=safe
|express=explicit
|compat=nominative
|checking=static
|strength=strong
|tags=java, java5
|hopl id=2131
|LCT=yes
|bnf=http://www.cui.unige.ch/db-research/Enseignement/analyseinfo/JAVA/BNFindex.html}}
{{language programming paradigm|Object-oriented}}
{{language programming paradigm|Imperative}}
{{language programming paradigm|generic}}
{{language programming paradigm|reflective}}[[runs on vm::java virtual machine| ]]
{{language|Java}}The '''Java''' programming language, developed by [[Sun Microsystems]], is a language aimed at allowing "high -performance", cross-platformvirtual application development.
 
Java source files (.java files) are typically [[Compiler|compiled]] to an intermediate [[bytecode]] (all platform) executable (.class files) and executed by a [[Java Virtual Machine]].
Most modern JVMs further compile the bytecode into your processor's native machine code during execution.
Java source files (.java files) are typically [[Compiler|compiled]] to an intermediate [[bytecode]] language (.class files) and executed by a [[Java Virtual Machine]]. Most modern JVMs further compile the bytecode of a Java program into your processors' native machine code during execution. This native code translation is mostly done via a [[Just-In-Time|JIT]] compiler that is built- in to the JVM. Some Java compilers (such as [[GCJ]]) can compile Java code to native machine code ahead-of-time rather than just-in-time.
 
The primary benefits of Java are:
* Cross-[[platform]] (Write Once, Run Anywhere (if all of the libraries are ported))
* Comprehensive class library (which is thoroughly [http://www.oracle.com/technetwork/java/javase/documentation/index.html documented])
* High performance (Java code running with a modern JIT is often comparable to the speed of [[C++]])
* [[garbage collection|Automatic memory management]]
* Comprehensive class library
* HugeLarge user community
* Automatic memory management
* Well supported by the [[open- source]] community and commercial industry ([[Sun Microsystems|Sun]], [[IBM]], [[Oracle]], HP, BEA, [[MacApple OS X|AppleInc]], etc.)
* Huge user community
* Well supported by the open-source community and commercial industry ([[Sun Microsystems|Sun]], [[IBM]], [[Oracle]], HP, BEA, [[Mac OS X|Apple]], etc.)
 
Java is used in a variety of environments including desktop applications, embedded device (PDA and wireless phone) applications, server-side web page serving applications (as [[Java Server Pages|JSP]]), and applets embedded in web pages.
 
There are a variety of arguments regarding Java's performance compared to other popular languages like [[C++]]. Some come to the conclusion that the programmer's choices make a bigger difference on performance in each language. Most show that each language is better than the other at specific types of operations (e.g. Java for memory allocation, C++ for numerical operations).
Java is used in a variety of environments including desktop applications, embedded device (PDA and wireless phone) applications, server-side web page serving applications (as [[Java Server Pages|JSP]]) and applets embedded in web pages.
An extensive summary of comparisons between Java and C++ can be found [[wp:Comparison of Java and C++|on Wikipedia]].
 
According to a variety of [http://www.tiobe.com/tpci.htm sources], Java is currently the most popular programming language in the world.
 
According to a variety ofsome [http://www.tiobe.com/tpci.htm sources], Java is currently one of the most popular programming languagelanguages in the world.
 
Useful Java links:
* [http://www.java.com java.com]
* [http://wwwopenjdk.java.net java.netOpenJDK]
 
* [http://java.sun.com java.sun.com]
==Todo==
* [http://openjdk.dev.java.net OpenJDK]
[[Reports:Tasks_not_implemented_in_Java]]
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