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JVMTI is designed to provide an Application Programming Interface (API) for the development of tools that need access to the state of the JVM. Examples for such tools are debuggers or profilers. [1] The JVMTI is a native interface of the JVM. A library, written in C or C++, is loaded during the initialization of the JVM. [2]
In the JNI framework, native functions are implemented in separate .c or .cpp files. (C++ provides a slightly simpler interface with JNI.) When the JVM invokes the function, it passes a JNIEnv pointer, a jobject pointer, and any Java arguments declared by the Java method. For example, the following converts a Java string to a native string:
Code, constants, and other class data are stored in the "method area". The method area is logically part of the heap, but implementations may treat the method area separately from the heap, and for example might not garbage collect it. Each JVM thread also has its own call stack (called a "Java Virtual Machine stack" for clarity), which stores ...
This is a list of the instructions that make up the Java bytecode, an abstract machine language that is ultimately executed by the Java virtual machine. [1] The Java bytecode is generated from languages running on the Java Platform, most notably the Java programming language.
Java bytecode is the instruction set of the Java virtual machine (JVM), the language to which Java and other JVM-compatible source code is compiled. [1] Each instruction is represented by a single byte, hence the name bytecode, making it a compact form of data.
JOP – hardware implementation of the JVM. GPL 3. Juice – JavaME experimental JVM developed to run on the NUXI operating system. Jupiter – uses Boehm garbage collector and GNU Classpath. GPL. Unmaintained. Kaffe – uses GNU Classpath. GPL. 1.1.9 released on February 26, 2008. Mika VM – intended for use in embedded devices. Cross-platform.
mic1 Free and open source MIC-1 microarchitecture simulator and IJVM assembler. emuIJVM Open source and free, with a stack animation IJVM simulator developed by students at the University of Catania (for Windows, Mac, Linux) A Vrije Universiteit Amsterdam course assignment on implementing an interpreter/ emulator for the IJVM instruction set
This list of JVM Languages comprises notable computer programming languages that are used to produce computer software that runs on the Java virtual machine (JVM). Some of these languages are interpreted by a Java program, and some are compiled to Java bytecode and just-in-time (JIT) compiled during execution as regular Java programs to improve performance.