Category:Java: Difference between revisions

Official website
Execution method:	Compiled (bytecode)
Garbage collected:	Yes
Parameter passing methods:	By value
Type safety:	Safe
Type strength:	Strong;
Type compatibility:	Nominative
Type expression:	Explicit
Type checking:	Static
Lang tag(s):	java, java5
See Also:	Java on the HOPL; BNF Grammar for Java; Java compared to other languages;

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Latest revision as of 07:11, 27 November 2019

The Java programming language, developed by Sun Microsystems, is a language aimed at allowing "high-performance", virtual application development.

Java source files (.java files) are typically 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. This native code translation is mostly done via a JIT compiler that is built in 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 documented)
Automatic memory management
Large user community
Well supported by the open source community and commercial industry (Sun, IBM, Oracle, HP, BEA, Apple Inc, 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 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). An extensive summary of comparisons between Java and C++ can be found on Wikipedia.

According to some sources, Java is currently one of the most popular programming languages in the world.

Useful Java links:

Todo

Reports:Tasks_not_implemented_in_Java

Subcategories

This category has the following 3 subcategories, out of 3 total.

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Pages in category "Java"

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+|exec=bytecode
+|site=http://www.oracle.com/technetwork/java/
-The '''Java''' programming language, developed by Sun Microsystems, is a language aimed at allowing high performance, cross-platform application development.
+|gc=yes
+|parampass=value
-Java source files (.java files) are typically 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.
+|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| ]]
+The '''Java''' programming language, developed by [[Sun Microsystems]], is a language aimed at allowing "high-performance", virtual 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.
+This native code translation is mostly done via a [[Just-In-Time|JIT]] compiler that is built in 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)
+* 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 plus plus|C  ]])
+* [[garbage collection|Automatic memory management]]
-* Comprehensive class library
+* Large user community
-* Automatic memory management
+* Well supported by the [[open source]] community and commercial industry ([[Sun Microsystems|Sun]], [[IBM]], [[Oracle]], HP, BEA, [[Apple Inc]], etc.)
-* Huge user community
-* Well supported by the open-source community and commercial industry (Sun, IBM, Oracle, HP, BEA, 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 some [http://www.tiobe.com/tpci.htm sources], Java is currently one of the most popular programming languages in the world.
 Useful Java links:
 * [http://www.java.com java.com]
-* [http://www.java.net java.net]
+* [http://openjdk.java.net OpenJDK]
-* [http://java.sun.com java.sun.com]
+==Todo==
-* [http://openjdk.dev.java.net OpenJDK]
+[[Reports:Tasks_not_implemented_in_Java]]