Difference between revisions of "Java"

Latest revision as of 18:12, 12 April 2018

Background

Java is a reflective, object-oriented programming language initially developed by James Gosling and colleagues at Sun Microsystems in 1991, as part of the Green Project. It was initially called Oak, and was intended to replace C++, although its feature set resembles more that of Objective-C. Sun Microsystems is currently owned by the Oracle Corporation, which maintains and regularly updates the Java platform.

Java should not be confused with Javascript, a scripting language with which it shares only the name and a similar C-like syntax. The Java Runtime Environment (JRE) does contain a JavaScript interpreter, however, based on Mozilla Rhino.

Specifications of the Java language, the JVM (Java Virtual Machine) and the Java API are community-maintained through the Sun-managed Java Community Process.

After first being made public in 1994, it achieved prominence following the announcement at 1995's SunWorld that Netscape would be including support for it in their next version of the Navigator browser.

Language Characteristics

Object orientation
Platform independence
Automatic garbage collection

See The Choice of Java, which contains a more detailed evaluation of the language.

Roguelike Development

Pros Java has excellent features for roguelike development:

Object Oriented
Platform Independent
Garbage Collected (i.e. no need to manage memory by hand)
Ability to run on a web page as an applet.
Generally easier to learn and use than other high-level languages like C and C++.
Serialization to files makes it easier to implement and maintain game save and load.
For developers of tiled roguelikes, the AWT and Swing libraries provide an excellent alternative to the 3rd party (or native platform) graphics libraries used in C and C++ since the developer can ensure that these libraries will be present in every Java implementation.

Cons However, it still has some disadvantages:

No native console support. Developers of ASCII roguelikes must decide whether to
- Use the JNI for traditional curses implmentation (Java Curses Implementation)
  - Existing libraries(JCurses, Charva or libjcsi)
  - Develop a new library (e.g. wrapping the Curses C library and native methods)
- Emulate console output in platform independent AWT or Swing components (see Blacken, SquidLib, and Zircon).
Longer initial program startup time. Java has no issues with speed once running [1], especially for RL games.
Dependency on a Java Runtime Environment (JRE)
- Ahead Of Time (AOT) compiling to a specific OS is possible, e.g. using the GNU Compiler for Java (GCJ). A Windows implementation is available with MinGW [2].

Java Roguelikes

The features of Java have led many roguelikes to adopt this language:

Status	Name
7DRL	Attack The Geth
αlpha	Beggar
7DRL	CastlevaniaRL
stable	Caverns of Underkeep
	Crossfire
	CryptRL
	Dimension Dungeon
	Dweller (using Java Micro Edition, J2ME)
	Earl Spork (using Libjcsi)
	EmoSquid
	Excitable Digger (using Libjcsi)
	Expedition
	Fortress of the Goblin King
	Fruits of the Forest
	Guardian Angel
	HexRogue
	Hokuto no Rogue
	JADE
stable	Javelin
	Kalyp
	Kamyran's Eye (for mobile phones)
	Legerdemain
	MegamanRL
	MetroidRL
	MIDP RL
	Mt. Drash: the Roguelike
	Neon
	Netwhack
stable	Pixel Dungeon (for Android)
	Plutonium roguelike
	Quarker
stable	QuickHack
	Roguelike Runner
	Sigmore Mines
	Sigmore Mines 2
	Tower
	Tower of Druaga RL
	Tyrant
	Valley of Ge-Hinnom
	Wayfarer (Written in Processing)
	ZeldaRL
defunct	a small freeware roguelike applet created by Will Thimbleby

@@ Line 1: / Line 1: @@
 == Background ==
-Java is a reflective, object-oriented programming language initially developed by James Gosling and colleagues at Sun Microsystems in 1991, as part of the Green Project. It was initially called Oak, and was intended to replace [[Cpp|C  ]], although its feature set resembles more that of [[Objective-C]].
+Java is a reflective, object-oriented programming language initially developed by James Gosling and colleagues at Sun Microsystems in 1991, as part of the Green Project. It was initially called Oak, and was intended to replace [[Cpp|C++]], although its feature set resembles more that of [[Objective-C]]. Sun Microsystems is currently owned by the Oracle Corporation, which maintains and regularly updates the Java platform.
-Java should not be confused with [[JavaScript]], a script language with which it shares only the name and a similar [[C]]-like syntax. Sun Microsystems currently maintains and updates Java regularly.
+Java should not be confused with [[Javascript]], a scripting language with which it shares only the name and a similar [[C]]-like syntax. The Java Runtime Environment (JRE) does contain a JavaScript interpreter, however, based on Mozilla Rhino.
 Specifications of the Java language, the JVM (Java Virtual Machine) and the Java API are community-maintained through the Sun-managed Java Community Process.
@@ Line 8: / Line 8: @@
 After first being made public in 1994, it achieved prominence following the announcement at 1995's SunWorld that Netscape would be including support for it in their next version of the Navigator browser.
-== Language characteristics ==
+== Language Characteristics ==
 *Object orientation
 *Platform independence
 *Automatic garbage collection
-== Roguelike Issues ==
+See [[The Choice of Java]], which contains a more detailed evaluation of the language.
+== Roguelike Development ==
+'''Pros'''
 Java has excellent features for roguelike development:
-* Object orientation.
+* Object Oriented
-* Platform independence.
+* Platform Independent
-* Ability to run on a web page as an Applet.
+* Garbage Collected (i.e. no need to manage memory by hand)
-* Generally easier to learn and use than other high-level languages like C and C  .
+* Ability to run on a web page as an applet.
-* Serialization to files makes easier to implement and mantain game save and load.
+* Generally easier to learn and use than other high-level languages like C and C++.
-* For developers of tiled roguelikes the AWT and Swing libraries provide an excellent alternative to the 3rd party (or native platform) graphics libraries used in C and C  .
+* Serialization to files makes it easier to implement and maintain game save and load.
+* For developers of tiled roguelikes, the AWT and Swing libraries provide an excellent alternative to the 3rd party (or native platform) graphics libraries used in C and C++ since the developer can ensure that these libraries will be present in every Java implementation.
+'''Cons'''
 However, it still has some disadvantages:
 * No native console support. Developers of [[ASCII]] roguelikes must decide whether to
-** Use one of existing libraries([[JCurses]] or [[Charva]])
+** Use the JNI for traditional curses implmentation ([[Java Curses Implementation]])
-** Develop a new library  (e.g. wrapping the [[Curses]] C library and native methods)
+*** Existing libraries([https://sourceforge.net/projects/javacurses/ JCurses], [http://www.pitman.co.za/projects/charva/index.html Charva] or [[libjcsi]])
-** Emulate console output in plataform independant AWT or Swing components.
+*** Develop a new library  (e.g. wrapping the [[Curses]] C library and native methods)
-* Longer program startup time. Java has no issues with speed once running [http://www.idiom.com/~zilla/Computer/javaCbenchmark.html], especially for RL games.
+** Emulate console output in platform independent AWT or Swing components (see [[Blacken]], [[SquidLib]], and [[Zircon]]).
-* No executables, dependency on Java Runtime Environment
+* Longer initial program startup time. Java has no issues with speed once running [http://www.idiom.com/~zilla/Computer/javaCbenchmark.html], especially for RL games.
+* Dependency on a Java Runtime Environment (JRE)
+** Ahead Of Time (AOT) compiling to a specific OS is possible, e.g. using the [http://gcc.gnu.org/java/ GNU Compiler for Java] (GCJ). A Windows implementation is available with MinGW [http://www.thisiscool.com/gcc_mingw.htm].
 == Java Roguelikes ==
-The features of Java have led several roguelikes to adopt this language:
+The features of Java have led many roguelikes to adopt this language:
-*[[CastlevaniaRL]]
-*[[Dweller]] (using Java Micro Edition, J2ME)
+<!-- EDITORS: If you know of the status of any of these, feel free to add them -->
-*[[Kalyp]]
+{|class="wikitable sortable"
-*[[Tyrant]]
+!Status||Name
-*[[CryptRL]]
+|-
+|{{7DRL}} || [[Attack The Geth]]
+|-
+| {{alpha}} ||[[Beggar]]
+|-
+| {{7DRL}} ||[[CastlevaniaRL]]
+|-
+| {{stable}} ||[[Caverns of Underkeep]]
+|-
+| ||[[Crossfire]]
+|-
+| ||[[CryptRL]]
+|-
+| ||[[Dimension Dungeon]]
+|-
+| ||[[Dweller]] (using Java Micro Edition, J2ME)
+|-
+| ||[[Earl Spork]] (using [[Libjcsi]])
+|-
+| ||[[EmoSquid]]
+|-
+| ||[[Excitable Digger]] (using [[Libjcsi]])
+|-
+| ||[[Expedition]]
+|-
+| ||[[Fortress of the Goblin King]]
+|-
+| ||[[Fruits of the Forest]]
+|-
+| ||[[Guardian Angel]]
+|-
+| ||[[HexRogue]]
+|-
+| ||[[Hokuto no Rogue]]
+|-
+| ||[[JADE]]
+|-
+| {{stable}} ||[[Javelin]]
+|-
+| ||[[Kalyp]]
+|-
+| ||[[Kamyran's Eye]] (for mobile phones)
+|-
+| ||[[Legerdemain]]
+|-
+| ||[[MegamanRL]]
+|-
+| ||[[MetroidRL]]
+|-
+| ||[[MIDP RL]]
+|-
+| ||[[Mt. Drash: the Roguelike]]
+|-
+| ||[[Neon]]
+|-
+| ||[[Netwhack]]
+|-
+| {{stable}} ||[[Pixel Dungeon]] (for Android)
+|-
+| ||[[Plutonium roguelike]]
+|-
+| ||[[Quarker]]
+|-
+| {{stable}} ||[[QuickHack]]
+|-
+| ||[[Roguelike Runner]]
+|-
+| ||[[Sigmore Mines]]
+|-
+| ||[[Sigmore Mines 2]]
+|-
+| ||[[Tower]]
+|-
+| ||[[Tower of Druaga RL]]
+|-
+| ||[[Tyrant]]
+|-
+| ||[[Valley of Ge-Hinnom]]
+|-
+| ||[[Wayfarer]] (Written in [http://www.processing.org Processing])
+|-
+| ||[[ZeldaRL]]
+|-
+| {{defunct}} <!--404--> ||[http://will.thimbleby.net/roguelike/ a small freeware roguelike applet created by Will Thimbleby]
-There are also some roguelike projects that are being built around Java:
+|}
-*[[Guardian Angel]]
-*[[JADE]]
-*[[Plutonium roguelike]]
 == Related links ==
+* [[The Choice of Java]]
 * [http://en.wikipedia.org/wiki/Java_programming_language "Java programming language" (Wikipedia article)]
-* [http://gpwiki.org/index.php/Java:Development_Environments  List of Java Development Enviroments] on the [http://gpwiki.org/ Game Programming Wiki]
+* [http://gpwiki.org/index.php/Java:Development_Environments  List of Java Development Environments] on the [http://gpwiki.org/ Game Programming Wiki]
 [[Category:Programming languages]]

Difference between revisions of "Java"

Latest revision as of 18:12, 12 April 2018

Contents

Background

Language Characteristics

Roguelike Development

Java Roguelikes

Related links

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