Browse free open source Java Compilers and projects below. Use the toggles on the left to filter open source Java Compilers by OS, license, language, programming language, and project status.

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  • 1
    Jad Java decompiler plugin for Eclipse IDE.
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    Downloads: 193 This Week
    Last Update:
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  • 2
    SMC - The State Machine Compiler

    SMC - The State Machine Compiler

    Translates state machine into a target programming language.

    SMC takes a state machine stored in a .sm file and generates a State pattern in 14 programming languages. Includes: default transitions, transition args, transition guards, push/pop transitions and Entry/Exit actions. See User Manual for more info.
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    Downloads: 82 This Week
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  • 3
    The aim of this project is to develope a decompiler for java which is platform independent and has options to obfuscate the class file also. The project takes class file as input and decompiles it and provides the source file.
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    Downloads: 37 This Week
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  • 4
    SableCC is a parser generator which generates object-oriented frameworks for building compilers, interpreters and other text parsers. SableCC keeps a clean separation between machine and user code which leads to a shorter development cycle.
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    Downloads: 60 This Week
    Last Update:
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  • 5
    BNF for Java is a BNF Compiler-Compiler, or Parser-Generator. It implements ISO Standard Backus-Naur Format, using Java. BNF allows you to create a syntax, or a complete language, to parse your data source. Your custom Java extensions generate output.
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    Downloads: 21 This Week
    Last Update:
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  • 6
    z390 Portable Mainframe Assembler

    z390 Portable Mainframe Assembler

    z390 Portable Mainframe Assembler and Emulator

    z390 Portable Mainframe Assembler and Emulator
    Downloads: 11 This Week
    Last Update:
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  • 7
    Retrotranslator is a tool that makes Java applications compatible with Java 1.4, Java 1.3 and other environments.
    Downloads: 8 This Week
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  • 8
    Pizza is a small, fast and free compiler for Java and an important superset of the Java programming language. It is written in Java/Pizza and compiles to Java class files.
    Downloads: 9 This Week
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  • 9
    JavaGuard is a general purpose bytecode obfuscator, designed to fit effortlessly into your regular build and testing process, providing peace of mind that your valuable Java code is more secure against decompilation and other forms of reverse engineering
    Downloads: 2 This Week
    Last Update:
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  • 10
    jdec is a Java Decompiler. It can be used to reverse the bytecodes present in a .class File to produce a Java Source File which can be nearly correct or equivalent (Due To different Interpretations) to the original java file.[With UI & command line]
    Downloads: 2 This Week
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  • 11
    JFlex

    JFlex

    The fast lexer generator for Java

    JFlex is a flex-like lexer generator for Java with emphasis on speed and full Unicode support. It has some not so usual features like negation in regexps and nested input streams. Also reads JLex specifications unchanged.
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    Downloads: 4 This Week
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  • 12
    STDL (Structured test description language) is a domain-specific testing language that is used to auto-generate unit test code. It supports a myriad of output languages (incl. C#). The project's aim is that of reducing the resources required for testing
    Downloads: 2 This Week
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  • 13
    openASN.1 is an Open Source Java toolkit for the Abstract Syntax Notation One (ASN.1) which consists of a compiler and codec with a low footprint runtime library.
    Downloads: 2 This Week
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  • 14
    RECODER is a Java framework for Java program analysis and source code transformation. It computes an easy to use syntactic and semantic program model containing cross references, and it supports transformation rollbacks and incremental model updates.
    Downloads: 2 This Week
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  • 15

    ULS

    A lexical analyzer generator that makes the class source code.

    ULS is a class library for creating lexical analyzer from language specification file. It's provided as C/C++/C# and Java (class) libraries with a few of tools on Linux/Windows platform.
    Downloads: 2 This Week
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  • 16
    jRate is a real-time Java compiler and runtime system (based on GNU GCJ) with support for much of the Real-Time Specification for Java (RTSJ), including threading constructs with real-time constraints, asynchronous event handling, and memory regions.
    Downloads: 2 This Week
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  • 17
    Beaver is a LALR compiler compiler for Java that uses several techniques to generate very fast parsers.
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    Downloads: 1 This Week
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  • 18
    JB2CSharp is a port of the Java-Bison/Flex software developed by the Serl project at the University of Colorado, Boulder. Parsers and lexers will be able to use C# actions. The open source .NET project Mono has requested the port, and here it is.
    Downloads: 1 This Week
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  • 19
    A Java bytecode weaver that enables you to take advantage of the new 1.5 language features in your source code, while still retaining compatibility with 1.4 virtual machines.
    Downloads: 1 This Week
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  • 20
    Java AS400 RPG source code editor, debugger, IDE.
    Downloads: 1 This Week
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  • 21
    JaCIL (pronounced "jackal") is a project to create a byte-code compiler to translate .NET assemblies to Java class files.
    Downloads: 1 This Week
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  • 22
    Java Modeling Language (JML)
    This sourceforge site for the project is now DEPRECATED and not updated. All current work and new releases are on github: https://github.com/OpenJML/OpenJML. The Java Modeling Language (JML) is a behavioral interface specification language that can be used to specify the behavior of Java modules (as in design by contract -- DBC). It has many tools to do assertion checking, unit testing, etc. The principal current tool of the project is OpenJML -- cf. https://www.openjml.org, with binary downloads from https://github.com/OpenJML/OpenJML/releases/latest
    Downloads: 1 This Week
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  • 23
    XML encoder for source code
    Downloads: 1 This Week
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  • 24
    This project was started in an effort to ease development of Swing applications by creating a XML to Swing rendering utility. Although this project is definitely in the first released state, it shows great promise and focuses solely on the Swing API as a
    Downloads: 1 This Week
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  • 25

    AnyParser

    Problemless Grammar and Parser in Java

    Grammar based parsing in Java 8 to a tree structure. Create with no overhead a grammar in java and parse it into a tree structure. Will probably work right away with your grammar.
    Downloads: 0 This Week
    Last Update:
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