Java bytecode - Revision history

Frap: /* Example */

2025-04-30T12:41:27Z

Example

← Previous revision		Revision as of 12:41, 30 April 2025
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	continue outer;		continue outer;
	}		}
	System.out.println (i);		System.out.println(i);
	}		}
	</syntaxhighlight>		</syntaxhighlight>

Aidan9382: Add archive for dead url

2025-04-27T17:32:31Z

Add archive for dead url

← Previous revision		Revision as of 17:32, 27 April 2025
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	Some projects provide Java assemblers to enable writing Java bytecode by hand. Assembly code may be also generated by machine, for example by a compiler targeting a [[Java virtual machine]]. Notable Java assemblers include:		Some projects provide Java assemblers to enable writing Java bytecode by hand. Assembly code may be also generated by machine, for example by a compiler targeting a [[Java virtual machine]]. Notable Java assemblers include:
	*[[Jasmin (Java assembler)\|Jasmin]], takes text descriptions for Java classes, written in a simple assembly-like syntax using Java virtual machine instruction set and generates a Java class file<ref>{{Cite web\|url=https://jasmin.sourceforge.net/\|title=Jasmin Home Page\|website=jasmin.sourceforge.net\|accessdate=2 June 2024}}</ref>		*[[Jasmin (Java assembler)\|Jasmin]], takes text descriptions for Java classes, written in a simple assembly-like syntax using Java virtual machine instruction set and generates a Java class file<ref>{{Cite web\|url=https://jasmin.sourceforge.net/\|title=Jasmin Home Page\|website=jasmin.sourceforge.net\|accessdate=2 June 2024}}</ref>
	*Jamaica, a [[Macro (computer science)\|macro]] [[assembly language]] for the [[Java virtual machine]]. Java syntax is used for class or interface definition. Method bodies are specified using bytecode instructions.<ref>{{Cite web\|url=https://www.javaworld.com/article/2072355/core-java/learn-to-speak-jamaican.html\|title=Jamaica: The Java virtual machine (JVM) macro assembler<!-- Bot generated title -->\|work=JavaWorld \|accessdate=2 June 2024 \|last1=Huang \|first1=James Jianbo }}</ref>		*Jamaica, a [[Macro (computer science)\|macro]] [[assembly language]] for the [[Java virtual machine]]. Java syntax is used for class or interface definition. Method bodies are specified using bytecode instructions.<ref>{{Cite web\|url=https://www.javaworld.com/article/2072355/core-java/learn-to-speak-jamaican.html\|title=Jamaica: The Java virtual machine (JVM) macro assembler<!-- Bot generated title -->\|archive-url=https://web.archive.org/web/20231114000632/https://www.infoworld.com/article/2072355/learn-to-speak-jamaican.html\|archive-date=14 November 2023\|work=JavaWorld \|accessdate=2 June 2024 \|last1=Huang \|first1=James Jianbo }}</ref>
	*Krakatau Bytecode Tools, currently contains three tools: a decompiler and disassembler for Java classfiles and an assembler to create classfiles.<ref>{{Cite web\|url=https://github.com/Storyyeller/Krakatau\|title=Storyyeller/Krakatau\|date=1 June 2024\|accessdate=2 June 2024\|via=GitHub}}</ref>		*Krakatau Bytecode Tools, currently contains three tools: a decompiler and disassembler for Java classfiles and an assembler to create classfiles.<ref>{{Cite web\|url=https://github.com/Storyyeller/Krakatau\|title=Storyyeller/Krakatau\|date=1 June 2024\|accessdate=2 June 2024\|via=GitHub}}</ref>
	*Lilac, an assembler and disassembler for the [[Java virtual machine]].<ref>{{Cite web\|url=https://lilac.sourceforge.net/\|title=Lilac - a Java assembler\|website=lilac.sourceforge.net\|accessdate=2 June 2024}}</ref>		*Lilac, an assembler and disassembler for the [[Java virtual machine]].<ref>{{Cite web\|url=https://lilac.sourceforge.net/\|title=Lilac - a Java assembler\|website=lilac.sourceforge.net\|accessdate=2 June 2024}}</ref>

Bkell: ; → ,

2025-03-11T16:05:36Z

; → ,

← Previous revision		Revision as of 16:05, 11 March 2025
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	'''Java bytecode''' is the instruction set of the [[Java virtual machine]] (JVM), the language to which [[Java (programming language)\|Java]] and other JVM-compatible [[source code]] is [[compiler\|compiled]].<ref name="oracle jvm spec">{{Cite web\|url=http://docs.oracle.com/javase/specs/jvms/se8/html/\|title=Java Virtual Machine Specification\|publisher=Oracle\|access-date=14 November 2023}}</ref> Each instruction is represented by a single [[byte]], hence the name [[bytecode]], making it a compact form of [[data]].<ref name="JVM Book">{{Cite book\|last=Lindholm\|first=Tim\|title=The Java Virtual Machine Specification\|year=2015\|publisher=Oracle\|isbn=978-0133905908}}</ref>		'''Java bytecode''' is the instruction set of the [[Java virtual machine]] (JVM), the language to which [[Java (programming language)\|Java]] and other JVM-compatible [[source code]] is [[compiler\|compiled]].<ref name="oracle jvm spec">{{Cite web\|url=http://docs.oracle.com/javase/specs/jvms/se8/html/\|title=Java Virtual Machine Specification\|publisher=Oracle\|access-date=14 November 2023}}</ref> Each instruction is represented by a single [[byte]], hence the name [[bytecode]], making it a compact form of [[data]].<ref name="JVM Book">{{Cite book\|last=Lindholm\|first=Tim\|title=The Java Virtual Machine Specification\|year=2015\|publisher=Oracle\|isbn=978-0133905908}}</ref>

	Due to the nature of bytecode, a Java bytecode [[computer program\|program]] is runnable on any machine with a compatible JVM; without the lengthy process of compiling from source code.		Due to the nature of bytecode, a Java bytecode [[computer program\|program]] is runnable on any machine with a compatible JVM, without the lengthy process of compiling from source code.

	Java bytecode is used at [[Runtime (program lifecycle phase)\|runtime]] either [[interpreter (computing)\|interpreted]] by a JVM or compiled to machine code via [[Just-in-time compilation\|just-in-time]] (JIT) compilation and run as a native application.		Java bytecode is used at [[Runtime (program lifecycle phase)\|runtime]] either [[interpreter (computing)\|interpreted]] by a JVM or compiled to machine code via [[Just-in-time compilation\|just-in-time]] (JIT) compilation and run as a native application.

MrOllie: Reverted 2 edits by Shokai32 (talk) to last revision by Citation bot

2025-02-01T13:57:38Z

Reverted 2 edits by Shokai32 (talk) to last revision by Citation bot

← Previous revision		Revision as of 13:57, 1 February 2025
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	{{Use American English\|date=November 2023}}		{{Use American English\|date=November 2023}}

	'''Java bytecode''' is the instruction set of the [[Java virtual machine]] (JVM), the language to which [[Java (programming language)\|Java]] and other JVM-~~<ref>yohannashokai</ref>~~compatible [[source code]] is [[compiler\|compiled]].<ref name="oracle jvm spec">{{Cite web\|url=http://docs.oracle.com/javase/specs/jvms/se8/html/\|title=Java Virtual Machine Specification\|publisher=Oracle\|access-date=14 November 2023}}</ref> Each instruction is represented by a single [[byte]], hence the name [[bytecode]], making it a compact form of [[data]].<ref>Cite book\|last=Lindholm\|first=Tim\|title=The Java Virtual Machine Specification\|year=2015\|publisher=Oracle\|isbn=~~yohannashokai978~~-0133905908</ref>		'''Java bytecode''' is the instruction set of the [[Java virtual machine]] (JVM), the language to which [[Java (programming language)\|Java]] and other JVM-compatible [[source code]] is [[compiler\|compiled]].<ref name="oracle jvm spec">{{Cite web\|url=http://docs.oracle.com/javase/specs/jvms/se8/html/\|title=Java Virtual Machine Specification\|publisher=Oracle\|access-date=14 November 2023}}</ref> Each instruction is represented by a single [[byte]], hence the name [[bytecode]], making it a compact form of [[data]].<ref name="JVM Book">{{Cite book\|last=Lindholm\|first=Tim\|title=The Java Virtual Machine Specification\|year=2015\|publisher=Oracle\|isbn=978-0133905908}}</ref>

	Due to the nature of bytecode, a Java bytecode [[computer program\|program]] is runnable on any machine with a compatible JVM; without the lengthy process of compiling from source code.		Due to the nature of bytecode, a Java bytecode [[computer program\|program]] is runnable on any machine with a compatible JVM; without the lengthy process of compiling from source code.
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	== See also ==		== See also ==
	Portal\|Computer programming ~~YohannaShokai~~		{{Portal\|Computer programming}}
	<!---♦♦♦ Please keep the list in alphabetical order ♦♦♦--->		<!---♦♦♦ Please keep the list in alphabetical order ♦♦♦--->
	* [[Byte Code Engineering Library]]		* [[Byte Code Engineering Library]]

Shokai32: Fixed grammar

2025-02-01T12:51:49Z

Fixed grammar

← Previous revision		Revision as of 12:51, 1 February 2025
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	== See also ==		== See also ==
	{{Portal\|Computer programming}}		Portal\|Computer programming YohannaShokai
	<!---♦♦♦ Please keep the list in alphabetical order ♦♦♦--->		<!---♦♦♦ Please keep the list in alphabetical order ♦♦♦--->
	* [[Byte Code Engineering Library]]		* [[Byte Code Engineering Library]]

Shokai32 at 12:50, 1 February 2025

2025-02-01T12:50:11Z

← Previous revision		Revision as of 12:50, 1 February 2025
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	{{Use American English\|date=November 2023}}		{{Use American English\|date=November 2023}}

	'''Java bytecode''' is the instruction set of the [[Java virtual machine]] (JVM), the language to which [[Java (programming language)\|Java]] and other JVM-compatible [[source code]] is [[compiler\|compiled]].<ref name="oracle jvm spec">{{Cite web\|url=http://docs.oracle.com/javase/specs/jvms/se8/html/\|title=Java Virtual Machine Specification\|publisher=Oracle\|access-date=14 November 2023}}</ref> Each instruction is represented by a single [[byte]], hence the name [[bytecode]], making it a compact form of [[data]].<ref ~~name="JVM Book"~~>{{Cite book\|last=Lindholm\|first=Tim\|title=The Java Virtual Machine Specification\|year=2015\|publisher=Oracle\|isbn=~~978~~-0133905908}}</ref>		'''Java bytecode''' is the instruction set of the [[Java virtual machine]] (JVM), the language to which [[Java (programming language)\|Java]] and other JVM-<ref>yohannashokai</ref>compatible [[source code]] is [[compiler\|compiled]].<ref name="oracle jvm spec">{{Cite web\|url=http://docs.oracle.com/javase/specs/jvms/se8/html/\|title=Java Virtual Machine Specification\|publisher=Oracle\|access-date=14 November 2023}}</ref> Each instruction is represented by a single [[byte]], hence the name [[bytecode]], making it a compact form of [[data]].<ref>Cite book\|last=Lindholm\|first=Tim\|title=The Java Virtual Machine Specification\|year=2015\|publisher=Oracle\|isbn=yohannashokai978-0133905908</ref>

	Due to the nature of bytecode, a Java bytecode [[computer program\|program]] is runnable on any machine with a compatible JVM; without the lengthy process of compiling from source code.		Due to the nature of bytecode, a Java bytecode [[computer program\|program]] is runnable on any machine with a compatible JVM; without the lengthy process of compiling from source code.

Citation bot: Add: work, authors 1-1. | Use this bot. Report bugs. | Suggested by Dominic3203 | Category:Bytecodes | #UCB_Category 1/7

2025-01-26T17:06:58Z

Add: work, authors 1-1. | Use this bot. Report bugs. | Suggested by Dominic3203 | Category:Bytecodes | #UCB_Category 1/7

← Previous revision		Revision as of 17:06, 26 January 2025
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	Some projects provide Java assemblers to enable writing Java bytecode by hand. Assembly code may be also generated by machine, for example by a compiler targeting a [[Java virtual machine]]. Notable Java assemblers include:		Some projects provide Java assemblers to enable writing Java bytecode by hand. Assembly code may be also generated by machine, for example by a compiler targeting a [[Java virtual machine]]. Notable Java assemblers include:
	*[[Jasmin (Java assembler)\|Jasmin]], takes text descriptions for Java classes, written in a simple assembly-like syntax using Java virtual machine instruction set and generates a Java class file<ref>{{Cite web\|url=https://jasmin.sourceforge.net/\|title=Jasmin Home Page\|website=jasmin.sourceforge.net\|accessdate=2 June 2024}}</ref>		*[[Jasmin (Java assembler)\|Jasmin]], takes text descriptions for Java classes, written in a simple assembly-like syntax using Java virtual machine instruction set and generates a Java class file<ref>{{Cite web\|url=https://jasmin.sourceforge.net/\|title=Jasmin Home Page\|website=jasmin.sourceforge.net\|accessdate=2 June 2024}}</ref>
	*Jamaica, a [[Macro (computer science)\|macro]] [[assembly language]] for the [[Java virtual machine]]. Java syntax is used for class or interface definition. Method bodies are specified using bytecode instructions.<ref>{{Cite web\|url=https://www.javaworld.com/article/2072355/core-java/learn-to-speak-jamaican.html\|title=Jamaica: The Java virtual machine (JVM) macro assembler<!-- Bot generated title -->\|accessdate=2 June 2024}}</ref>		*Jamaica, a [[Macro (computer science)\|macro]] [[assembly language]] for the [[Java virtual machine]]. Java syntax is used for class or interface definition. Method bodies are specified using bytecode instructions.<ref>{{Cite web\|url=https://www.javaworld.com/article/2072355/core-java/learn-to-speak-jamaican.html\|title=Jamaica: The Java virtual machine (JVM) macro assembler<!-- Bot generated title -->\|work=JavaWorld \|accessdate=2 June 2024 \|last1=Huang \|first1=James Jianbo }}</ref>
	*Krakatau Bytecode Tools, currently contains three tools: a decompiler and disassembler for Java classfiles and an assembler to create classfiles.<ref>{{Cite web\|url=https://github.com/Storyyeller/Krakatau\|title=Storyyeller/Krakatau\|date=1 June 2024\|accessdate=2 June 2024\|via=GitHub}}</ref>		*Krakatau Bytecode Tools, currently contains three tools: a decompiler and disassembler for Java classfiles and an assembler to create classfiles.<ref>{{Cite web\|url=https://github.com/Storyyeller/Krakatau\|title=Storyyeller/Krakatau\|date=1 June 2024\|accessdate=2 June 2024\|via=GitHub}}</ref>
	*Lilac, an assembler and disassembler for the [[Java virtual machine]].<ref>{{Cite web\|url=https://lilac.sourceforge.net/\|title=Lilac - a Java assembler\|website=lilac.sourceforge.net\|accessdate=2 June 2024}}</ref>		*Lilac, an assembler and disassembler for the [[Java virtual machine]].<ref>{{Cite web\|url=https://lilac.sourceforge.net/\|title=Lilac - a Java assembler\|website=lilac.sourceforge.net\|accessdate=2 June 2024}}</ref>

Tkmcinto: /* Instruction set architecture */ Add missing word ("passing").

2025-01-02T06:16:31Z

Instruction set architecture: Add missing word ("passing").

← Previous revision		Revision as of 06:16, 2 January 2025
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	The bytecode comprises various instruction types, including data manipulation, control transfer, object creation and manipulation, and method invocation, all integral to Java's object-oriented programming model.<ref name="oracle jvm spec"/>		The bytecode comprises various instruction types, including data manipulation, control transfer, object creation and manipulation, and method invocation, all integral to Java's object-oriented programming model.<ref name="oracle jvm spec"/>

	The JVM is both a [[stack machine]] and a [[register machine]]. Each [[Call stack#STACK-FRAME\|frame]] for a method call has an "operand stack" and an array of "local variables".<ref name="jvm">{{cite book \|last1=Lindholm \|first1=Tim \|last2=Yellin \|first2=Frank \|last3=Bracha \|first3=Gilad \|last4=Buckley \|first4=Alex \|title=The Java Virtual Machine Specification \|edition=Java SE 8 \|date=2015-02-13 \|url=http://docs.oracle.com/javase/specs/jvms/se8/html/}}</ref>{{rp\|2.6}} <ref name="JVM Book"/> The operand stack is used for operands to computations and for receiving the return value of a called method, while local variables serve the same purpose as [[Processor register\|registers]] and are also used to pass method arguments. The maximum size of the operand stack and local variable array, computed by the compiler, is part of the attributes of each method.<ref name="jvm"/>{{rp\|4.7.3}} Each can be independently sized from 0 to 65535 values, where each value is 32 bits. {{code\|lang="java"\|long}} and {{code\|lang="java"\|double}} types, which are 64 bits, take up two consecutive local variables<ref name="jvm"/>{{rp\|2.6.1}} (which need not be 64-bit aligned in the local variables array) or one value in the operand stack (but are counted as two units in the depth of the stack).<ref name="jvm"/>{{rp\|2.6.2}}		The JVM is both a [[stack machine]] and a [[register machine]]. Each [[Call stack#STACK-FRAME\|frame]] for a method call has an "operand stack" and an array of "local variables".<ref name="jvm">{{cite book \|last1=Lindholm \|first1=Tim \|last2=Yellin \|first2=Frank \|last3=Bracha \|first3=Gilad \|last4=Buckley \|first4=Alex \|title=The Java Virtual Machine Specification \|edition=Java SE 8 \|date=2015-02-13 \|url=http://docs.oracle.com/javase/specs/jvms/se8/html/}}</ref>{{rp\|2.6}} <ref name="JVM Book"/> The operand stack is used for passing operands to computations and for receiving the return value of a called method, while local variables serve the same purpose as [[Processor register\|registers]] and are also used to pass method arguments. The maximum size of the operand stack and local variable array, computed by the compiler, is part of the attributes of each method.<ref name="jvm"/>{{rp\|4.7.3}} Each can be independently sized from 0 to 65535 values, where each value is 32 bits. {{code\|lang="java"\|long}} and {{code\|lang="java"\|double}} types, which are 64 bits, take up two consecutive local variables<ref name="jvm"/>{{rp\|2.6.1}} (which need not be 64-bit aligned in the local variables array) or one value in the operand stack (but are counted as two units in the depth of the stack).<ref name="jvm"/>{{rp\|2.6.2}}

	=== Instruction set ===		=== Instruction set ===

Plastikspork: Undid revision 1266177809 by Shubhip (talk)

2024-12-31T17:14:21Z

Undid revision 1266177809 by Shubhip (talk)

← Previous revision		Revision as of 17:14, 31 December 2024
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	*[[Scala (programming language)\|Scala]], a type-safe general-purpose programming language supporting object-oriented and functional programming		*[[Scala (programming language)\|Scala]], a type-safe general-purpose programming language supporting object-oriented and functional programming
	*[[JGNAT]] and AppletMagic, compile from the language [[Ada (programming language)\|Ada]] to Java bytecode		*[[JGNAT]] and AppletMagic, compile from the language [[Ada (programming language)\|Ada]] to Java bytecode
	*[[Java virtual machine#C to bytecode compilers\|~~[[[https://www.iteducationcentre.com/java-training-classes-in-pune.php\|Java~~ Java ~~Course~~ ~~in Pune~~]]{{dead link\|date=December 2018}}		*[[Java virtual machine#C to bytecode compilers\|C to Java byte-code compiler]]s {{dead link\|date=December 2018}}
	*[[Clojure]], a functional, immutable, general-purpose programming language in the [[Lisp (programming language)\|Lisp]] family with a strong emphasis on concurrency		*[[Clojure]], a functional, immutable, general-purpose programming language in the [[Lisp (programming language)\|Lisp]] family with a strong emphasis on concurrency
	*[[Kawa (Scheme implementation)\|Kawa]], an implementation of the [[Scheme (programming language)\|Scheme]] programming language, also a dialect of [[Lisp (programming language)\|Lisp]].		*[[Kawa (Scheme implementation)\|Kawa]], an implementation of the [[Scheme (programming language)\|Scheme]] programming language, also a dialect of [[Lisp (programming language)\|Lisp]].

Shubhip at 12:41, 30 December 2024

2024-12-30T12:41:02Z

← Previous revision		Revision as of 12:41, 30 December 2024
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	*[[Scala (programming language)\|Scala]], a type-safe general-purpose programming language supporting object-oriented and functional programming		*[[Scala (programming language)\|Scala]], a type-safe general-purpose programming language supporting object-oriented and functional programming
	*[[JGNAT]] and AppletMagic, compile from the language [[Ada (programming language)\|Ada]] to Java bytecode		*[[JGNAT]] and AppletMagic, compile from the language [[Ada (programming language)\|Ada]] to Java bytecode
	*[[Java virtual machine#C to bytecode compilers\|~~C to~~ Java ~~byte-code~~ ~~compiler~~]]s {{dead link\|date=December 2018}}		*[[Java virtual machine#C to bytecode compilers\|[[[https://www.iteducationcentre.com/java-training-classes-in-pune.php\|Java Java Course in Pune]]{{dead link\|date=December 2018}}
	*[[Clojure]], a functional, immutable, general-purpose programming language in the [[Lisp (programming language)\|Lisp]] family with a strong emphasis on concurrency		*[[Clojure]], a functional, immutable, general-purpose programming language in the [[Lisp (programming language)\|Lisp]] family with a strong emphasis on concurrency
	*[[Kawa (Scheme implementation)\|Kawa]], an implementation of the [[Scheme (programming language)\|Scheme]] programming language, also a dialect of [[Lisp (programming language)\|Lisp]].		*[[Kawa (Scheme implementation)\|Kawa]], an implementation of the [[Scheme (programming language)\|Scheme]] programming language, also a dialect of [[Lisp (programming language)\|Lisp]].

← Previous revision		Revision as of 17:32, 27 April 2025
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	Some projects provide Java assemblers to enable writing Java bytecode by hand. Assembly code may be also generated by machine, for example by a compiler targeting a [[Java virtual machine]]. Notable Java assemblers include:		Some projects provide Java assemblers to enable writing Java bytecode by hand. Assembly code may be also generated by machine, for example by a compiler targeting a [[Java virtual machine]]. Notable Java assemblers include:
	*[[Jasmin (Java assembler)\|Jasmin]], takes text descriptions for Java classes, written in a simple assembly-like syntax using Java virtual machine instruction set and generates a Java class file<ref>{{Cite web\|url=https://jasmin.sourceforge.net/\|title=Jasmin Home Page\|website=jasmin.sourceforge.net\|accessdate=2 June 2024}}</ref>		*[[Jasmin (Java assembler)\|Jasmin]], takes text descriptions for Java classes, written in a simple assembly-like syntax using Java virtual machine instruction set and generates a Java class file<ref>{{Cite web\|url=https://jasmin.sourceforge.net/\|title=Jasmin Home Page\|website=jasmin.sourceforge.net\|accessdate=2 June 2024}}</ref>
	*Jamaica, a [[Macro (computer science)\|macro]] [[assembly language]] for the [[Java virtual machine]]. Java syntax is used for class or interface definition. Method bodies are specified using bytecode instructions.<ref>{{Cite web\|url=https://www.javaworld.com/article/2072355/core-java/learn-to-speak-jamaican.html\|title=Jamaica: The Java virtual machine (JVM) macro assembler<!-- Bot generated title -->\|work=JavaWorld \|accessdate=2 June 2024 \|last1=Huang \|first1=James Jianbo }}</ref>		*Jamaica, a [[Macro (computer science)\|macro]] [[assembly language]] for the [[Java virtual machine]]. Java syntax is used for class or interface definition. Method bodies are specified using bytecode instructions.<ref>{{Cite web\|url=https://www.javaworld.com/article/2072355/core-java/learn-to-speak-jamaican.html\|title=Jamaica: The Java virtual machine (JVM) macro assembler<!-- Bot generated title -->\|archive-url=https://web.archive.org/web/20231114000632/https://www.infoworld.com/article/2072355/learn-to-speak-jamaican.html\|archive-date=14 November 2023\|work=JavaWorld \|accessdate=2 June 2024 \|last1=Huang \|first1=James Jianbo }}</ref>
	*Krakatau Bytecode Tools, currently contains three tools: a decompiler and disassembler for Java classfiles and an assembler to create classfiles.<ref>{{Cite web\|url=https://github.com/Storyyeller/Krakatau\|title=Storyyeller/Krakatau\|date=1 June 2024\|accessdate=2 June 2024\|via=GitHub}}</ref>		*Krakatau Bytecode Tools, currently contains three tools: a decompiler and disassembler for Java classfiles and an assembler to create classfiles.<ref>{{Cite web\|url=https://github.com/Storyyeller/Krakatau\|title=Storyyeller/Krakatau\|date=1 June 2024\|accessdate=2 June 2024\|via=GitHub}}</ref>
	*Lilac, an assembler and disassembler for the [[Java virtual machine]].<ref>{{Cite web\|url=https://lilac.sourceforge.net/\|title=Lilac - a Java assembler\|website=lilac.sourceforge.net\|accessdate=2 June 2024}}</ref>		*Lilac, an assembler and disassembler for the [[Java virtual machine]].<ref>{{Cite web\|url=https://lilac.sourceforge.net/\|title=Lilac - a Java assembler\|website=lilac.sourceforge.net\|accessdate=2 June 2024}}</ref>

← Previous revision		Revision as of 16:05, 11 March 2025
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	'''Java bytecode''' is the instruction set of the [[Java virtual machine]] (JVM), the language to which [[Java (programming language)\|Java]] and other JVM-compatible [[source code]] is [[compiler\|compiled]].<ref name="oracle jvm spec">{{Cite web\|url=http://docs.oracle.com/javase/specs/jvms/se8/html/\|title=Java Virtual Machine Specification\|publisher=Oracle\|access-date=14 November 2023}}</ref> Each instruction is represented by a single [[byte]], hence the name [[bytecode]], making it a compact form of [[data]].<ref name="JVM Book">{{Cite book\|last=Lindholm\|first=Tim\|title=The Java Virtual Machine Specification\|year=2015\|publisher=Oracle\|isbn=978-0133905908}}</ref>		'''Java bytecode''' is the instruction set of the [[Java virtual machine]] (JVM), the language to which [[Java (programming language)\|Java]] and other JVM-compatible [[source code]] is [[compiler\|compiled]].<ref name="oracle jvm spec">{{Cite web\|url=http://docs.oracle.com/javase/specs/jvms/se8/html/\|title=Java Virtual Machine Specification\|publisher=Oracle\|access-date=14 November 2023}}</ref> Each instruction is represented by a single [[byte]], hence the name [[bytecode]], making it a compact form of [[data]].<ref name="JVM Book">{{Cite book\|last=Lindholm\|first=Tim\|title=The Java Virtual Machine Specification\|year=2015\|publisher=Oracle\|isbn=978-0133905908}}</ref>

	Due to the nature of bytecode, a Java bytecode [[computer program\|program]] is runnable on any machine with a compatible JVM; without the lengthy process of compiling from source code.		Due to the nature of bytecode, a Java bytecode [[computer program\|program]] is runnable on any machine with a compatible JVM, without the lengthy process of compiling from source code.

	Java bytecode is used at [[Runtime (program lifecycle phase)\|runtime]] either [[interpreter (computing)\|interpreted]] by a JVM or compiled to machine code via [[Just-in-time compilation\|just-in-time]] (JIT) compilation and run as a native application.		Java bytecode is used at [[Runtime (program lifecycle phase)\|runtime]] either [[interpreter (computing)\|interpreted]] by a JVM or compiled to machine code via [[Just-in-time compilation\|just-in-time]] (JIT) compilation and run as a native application.

← Previous revision		Revision as of 12:50, 1 February 2025
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	{{Use American English\|date=November 2023}}		{{Use American English\|date=November 2023}}

	'''Java bytecode''' is the instruction set of the [[Java virtual machine]] (JVM), the language to which [[Java (programming language)\|Java]] and other JVM-compatible [[source code]] is [[compiler\|compiled]].<ref name="oracle jvm spec">{{Cite web\|url=http://docs.oracle.com/javase/specs/jvms/se8/html/\|title=Java Virtual Machine Specification\|publisher=Oracle\|access-date=14 November 2023}}</ref> Each instruction is represented by a single [[byte]], hence the name [[bytecode]], making it a compact form of [[data]].<ref ~~name="JVM Book"~~>{{Cite book\|last=Lindholm\|first=Tim\|title=The Java Virtual Machine Specification\|year=2015\|publisher=Oracle\|isbn=~~978~~-0133905908}}</ref>		'''Java bytecode''' is the instruction set of the [[Java virtual machine]] (JVM), the language to which [[Java (programming language)\|Java]] and other JVM-<ref>yohannashokai</ref>compatible [[source code]] is [[compiler\|compiled]].<ref name="oracle jvm spec">{{Cite web\|url=http://docs.oracle.com/javase/specs/jvms/se8/html/\|title=Java Virtual Machine Specification\|publisher=Oracle\|access-date=14 November 2023}}</ref> Each instruction is represented by a single [[byte]], hence the name [[bytecode]], making it a compact form of [[data]].<ref>Cite book\|last=Lindholm\|first=Tim\|title=The Java Virtual Machine Specification\|year=2015\|publisher=Oracle\|isbn=yohannashokai978-0133905908</ref>

	Due to the nature of bytecode, a Java bytecode [[computer program\|program]] is runnable on any machine with a compatible JVM; without the lengthy process of compiling from source code.		Due to the nature of bytecode, a Java bytecode [[computer program\|program]] is runnable on any machine with a compatible JVM; without the lengthy process of compiling from source code.

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	Some projects provide Java assemblers to enable writing Java bytecode by hand. Assembly code may be also generated by machine, for example by a compiler targeting a [[Java virtual machine]]. Notable Java assemblers include:		Some projects provide Java assemblers to enable writing Java bytecode by hand. Assembly code may be also generated by machine, for example by a compiler targeting a [[Java virtual machine]]. Notable Java assemblers include:
	*[[Jasmin (Java assembler)\|Jasmin]], takes text descriptions for Java classes, written in a simple assembly-like syntax using Java virtual machine instruction set and generates a Java class file<ref>{{Cite web\|url=https://jasmin.sourceforge.net/\|title=Jasmin Home Page\|website=jasmin.sourceforge.net\|accessdate=2 June 2024}}</ref>		*[[Jasmin (Java assembler)\|Jasmin]], takes text descriptions for Java classes, written in a simple assembly-like syntax using Java virtual machine instruction set and generates a Java class file<ref>{{Cite web\|url=https://jasmin.sourceforge.net/\|title=Jasmin Home Page\|website=jasmin.sourceforge.net\|accessdate=2 June 2024}}</ref>
	*Jamaica, a [[Macro (computer science)\|macro]] [[assembly language]] for the [[Java virtual machine]]. Java syntax is used for class or interface definition. Method bodies are specified using bytecode instructions.<ref>{{Cite web\|url=https://www.javaworld.com/article/2072355/core-java/learn-to-speak-jamaican.html\|title=Jamaica: The Java virtual machine (JVM) macro assembler<!-- Bot generated title -->\|accessdate=2 June 2024}}</ref>		*Jamaica, a [[Macro (computer science)\|macro]] [[assembly language]] for the [[Java virtual machine]]. Java syntax is used for class or interface definition. Method bodies are specified using bytecode instructions.<ref>{{Cite web\|url=https://www.javaworld.com/article/2072355/core-java/learn-to-speak-jamaican.html\|title=Jamaica: The Java virtual machine (JVM) macro assembler<!-- Bot generated title -->\|work=JavaWorld \|accessdate=2 June 2024 \|last1=Huang \|first1=James Jianbo }}</ref>
	*Krakatau Bytecode Tools, currently contains three tools: a decompiler and disassembler for Java classfiles and an assembler to create classfiles.<ref>{{Cite web\|url=https://github.com/Storyyeller/Krakatau\|title=Storyyeller/Krakatau\|date=1 June 2024\|accessdate=2 June 2024\|via=GitHub}}</ref>		*Krakatau Bytecode Tools, currently contains three tools: a decompiler and disassembler for Java classfiles and an assembler to create classfiles.<ref>{{Cite web\|url=https://github.com/Storyyeller/Krakatau\|title=Storyyeller/Krakatau\|date=1 June 2024\|accessdate=2 June 2024\|via=GitHub}}</ref>
	*Lilac, an assembler and disassembler for the [[Java virtual machine]].<ref>{{Cite web\|url=https://lilac.sourceforge.net/\|title=Lilac - a Java assembler\|website=lilac.sourceforge.net\|accessdate=2 June 2024}}</ref>		*Lilac, an assembler and disassembler for the [[Java virtual machine]].<ref>{{Cite web\|url=https://lilac.sourceforge.net/\|title=Lilac - a Java assembler\|website=lilac.sourceforge.net\|accessdate=2 June 2024}}</ref>

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	*[[Scala (programming language)\|Scala]], a type-safe general-purpose programming language supporting object-oriented and functional programming		*[[Scala (programming language)\|Scala]], a type-safe general-purpose programming language supporting object-oriented and functional programming
	*[[JGNAT]] and AppletMagic, compile from the language [[Ada (programming language)\|Ada]] to Java bytecode		*[[JGNAT]] and AppletMagic, compile from the language [[Ada (programming language)\|Ada]] to Java bytecode
	*[[Java virtual machine#C to bytecode compilers\|~~[[[https://www.iteducationcentre.com/java-training-classes-in-pune.php\|Java~~ Java ~~Course~~ ~~in Pune~~]]{{dead link\|date=December 2018}}		*[[Java virtual machine#C to bytecode compilers\|C to Java byte-code compiler]]s {{dead link\|date=December 2018}}
	*[[Clojure]], a functional, immutable, general-purpose programming language in the [[Lisp (programming language)\|Lisp]] family with a strong emphasis on concurrency		*[[Clojure]], a functional, immutable, general-purpose programming language in the [[Lisp (programming language)\|Lisp]] family with a strong emphasis on concurrency
	*[[Kawa (Scheme implementation)\|Kawa]], an implementation of the [[Scheme (programming language)\|Scheme]] programming language, also a dialect of [[Lisp (programming language)\|Lisp]].		*[[Kawa (Scheme implementation)\|Kawa]], an implementation of the [[Scheme (programming language)\|Scheme]] programming language, also a dialect of [[Lisp (programming language)\|Lisp]].