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SableVM
SableVM was a clean room implementation of Java bytecode interpreter implementing the Java virtual machine ( VM) specification, second edition. SableVM was designed to be a robust, extremely portable, efficient, and fully specifications-compliant (JVM spec, Java Native Interface, Invocation interface, Debug interface, etc.) Java Virtual Machine that would be easy to maintain and to extend. It is now no longer being maintained. The implementation was a part of the effort in the early 2000s to break the Java ecosystem free from Sun Microsystems's control. Overview The core engine is an interpreter which used ground-breaking techniques to deliver performance that can approach that of a "naive" just-in-time (JIT) compiler, while retaining the software engineering advantages of interpreters: portability, maintainability and simplicity. This simplicity makes SableVM's source code very accessible and easy to understand for new users/programmers. SableVM is Free Software — it is lic ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Free Java Implementations
Free Java implementations are software projects that implement Oracle's Java technologies and are distributed under free software licences, making them free software. Sun released most of its Java source code as free software in May 2007, so it can now almost be considered a free Java implementation. Java implementations include compilers, runtimes, class libraries, etc. Advocates of free and open source software refer to free or open source Java virtual machine software as free runtimes or free Java runtimes. Some advocates in this movement prefer not to use the term "Java" as it has trademark issues associated with it. Hence, even though it is a "free Java movement", the term "free Java runtimes" is avoided by them. Mid-1990s to 2006 The first free project to offer substantial parts of Java platform functionality was likely guavac, which began some time before November 1995. Since then, the free software movement developed other Java compilers, most notably the GNU Compiler ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
List Of Java Virtual Machines
This article provides non-exhaustive lists of Java SE Java virtual machines (JVMs). It does not include every Java ME vendor. Note that Jakarta EE runs on the standard Java SE JVM but that some vendors specialize in providing a modified JVM optimized for enterprise applications. Much Java development work takes place on Windows, Solaris, Linux, and FreeBSD, primarily with the Oracle JVMs. Note the further complication of different 32-bit/64-bit varieties. The primary Java VM reference implementation is the OpenJDK HotSpot, produced by Oracle Corporation and many other big and medium-sized companies (e.g. IBM, Redhat, Microsoft, Azul, SAP). Free and open source implementations Active * Codename One – uses the open source ParparVM * GraalVM – is based on HotSpot/OpenJDK, it has a polyglot feature, to transparently mix and match supported languages. * HotSpot – the open-source Java VM implementation by Oracle. * IKVM – Java for Mono and the Microsoft ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
GNU Classpath
GNU Classpath is a free software implementation of the standard class library for the Java programming language. Most classes from J2SE 1.4 and 5.0 are implemented. Classpath can thus be used to run Java-based applications. GNU Classpath is a part of the GNU Project. It was originally developed in parallel with libgcj due to license incompatibilities, but later the two projects merged. GNU Classpath was deemed a high priority project by the Free Software Foundation. When the Classpath project began, the license for the official Java implementation from Sun Microsystems did not allow distribution of any alterations. Since the inception of the Classpath project, the OpenJDK was released under the GPL and now serves as the official reference implementation for the Java platform. License GNU Classpath is licensed under the GNU General Public License with a linking exception. This is a free software license. All code is formally owned by the Free Software Foundation, and th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
McGill University
McGill University (French: Université McGill) is an English-language public research university in Montreal, Quebec, Canada. Founded in 1821 by royal charter,Frost, Stanley Brice. ''McGill University, Vol. I. For the Advancement of Learning, 1801–1895.'' McGill-Queen's University Press, 1980. the university bears the name of James McGill, a Scottish merchant, whose bequest in 1813 established the University of McGill College. In 1885, the name of the university was officially changed to McGill University. Its main campus is on the slope of Mount Royal in downtown Montreal in the borough of Ville-Marie, with a second campus situated in Sainte-Anne-de-Bellevue, west of the main campus on Montreal Island. The university is one of two members of the Association of American Universities located outside the United States, alongside the University of Toronto, and is the only Canadian member of the Global University Leaders Forum (GULF) within the World Economic Forum. The ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Maintainability
Maintainability is the ease of maintaining or providing maintenance for a functioning product or service. Depending on the field, it can have slightly different meanings. Usage in different fields Engineering In engineering, maintainability is the ease with which a product can be maintained to: * correct defects or their cause, * Repair or replace faulty or worn-out components without having to replace still working parts, * prevent unexpected working conditions, * maximize a product's useful life, * maximize efficiency, reliability, and safety, * meet new requirements, * make future maintenance easier, or * cope with a changing environment. In some cases, maintainability involves a system of continuous improvement - learning from the past to improve the ability to maintain systems, or improve the reliability of systems based on maintenance experience. Telecommunication In telecommunications and several other engineering fields, the term maintainability has the following ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Eclipse (software)
Eclipse is an integrated development environment (IDE) used in computer programming. It contains a base workspace and an extensible plug-in system for customizing the environment. It had been the most popular IDE for Java development until 2016, when it was surpassed by IntelliJ IDEA. Eclipse is written mostly in Java and its primary use is for developing Java applications, but it may also be used to develop applications in other programming languages via plug-ins, including Ada, ABAP, C, C++, C#, Clojure, COBOL, D, Erlang, Fortran, Groovy, Haskell, HLASM, JavaScript, Julia, Lasso, Lua, NATURAL, Perl, PHP, PL/I, Prolog, Python, R, Rexx, Ruby (including Ruby on Rails framework), Rust, Scala, and Scheme. It can also be used to develop documents with LaTeX (via a TeXlipse plug-in) and packages for the software Mathematica. Development environments include the Eclipse Java development tools (JDT) for Java and Scala, Eclipse CDT for C/C++, and Eclipse PDT for P ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
JDWP
In computing, the Java Debug Wire Protocol (JDWP) is a communication protocol which is part of the Java Platform Debugger Architecture. It is used for communication between a debugger and the Java Virtual Machine, which it debugs. It allows to debug processes on a different computer. It can work over a network socket or through shared memory. The protocol is implemented in the software library libjdwp. It can be activated using the -Xrunjdwp parameter of Java. Metasploit includes a module for JDWP. It can exploit it using various scripts, which have functions such as injecting a Java class that executes a shell command, returns operating system details or injects an arbitrary class. References External links Java Debug Wire Protocol - Java SE DocumentationHacking the Java Debug Wire Protocolby IOActive IOActive is an independent computer security services firm active in several areas. They are known for reporting high severity security vulnerabilities in a variety of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
JVMDI
The Java Platform Debugger Architecture (JPDA) is a collection of APIs to debugging, debug Java (programming language), Java code. * Java Debugger Interface (JDI) – defines a high-level Java language interface that developers can easily use to write remote debugger application tools. * Java Virtual Machine Tools Interface (JVMTI) – a native interface that helps to inspect the state and to control the execution of applications running in the Java virtual machine, Java Virtual Machine (JVM). * Java Virtual Machine Debug Interface (JVMDI) – ''JVMDI was deprecated in J2SE 5.0 in favor of JVM TI, and was removed in Java SE 6.'' * Java Debug Wire Protocol (JDWP) – defines communication between debuggee (a Java application) and debugger processes. Java Debugger Interface (JDI) JDI is the highest-layer of the Java Platform Debugger Architecture. It allows to access the Java virtual machine, JVM and the internal variables of the debugged program. It also allows to set breakpoints, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
