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The Java Development Kit ( JDK) is a distribution of Java technology by Oracle Corporation. It implements the Java Language Specification ( JLS) and the Java Virtual Machine Specification ( JVMS) and provides the Standard Edition ( SE) of the Java Application Programming Interface ( API ). It is derivative of the community driven OpenJDK which ...
OpenJDK (Open Java Development Kit) is a free and open-source implementation of the Java Platform, Standard Edition (Java SE). It is the result of an effort Sun Microsystems began in 2006. The implementation is licensed under the GPL-2.0-only with a linking exception .
The Java language has undergone several changes since JDK 1.0 as well as numerous additions of classes and packages to the standard library.Since J2SE 1.4, the evolution of the Java language has been governed by the Java Community Process (JCP), which uses Java Specification Requests (JSRs) to propose and specify additions and changes to the Java platform.
The Java Runtime Environment (JRE) and Java Development Kit (JDK) are the actual files downloaded and installed on a computer to run or develop Java programs, respectively. General purpose packages java.lang. The Java package java.lang contains fundamental classes and interfaces closely tied to the language and runtime system.
For example, the Java compiler, which converts Java source code into Java bytecode (an intermediate language for the JVM), is provided as part of the Java Development Kit (JDK). The Java Runtime Environment (JRE), complementing the JVM with a just-in-time (JIT) compiler, converts intermediate bytecode into native machine code on the fly. The ...
The Oracle implementation is packaged into two different distributions: The Java Runtime Environment (JRE) which contains the parts of the Java SE platform required to run Java programs and is intended for end users, and the Java Development Kit (JDK), which is intended for software developers and includes development tools such as the Java ...
This is the code that became part of Java 7. Supported platforms Maintained by Oracle. As with the entire Java Development Kit (JDK), HotSpot is supported by Oracle Corporation on Windows, Linux, and macOS. Supported instruction set architectures (ISAs) are x86-64 and AArch64. Since JDK 15, Solaris and SPARC are no longer supported.
A Java virtual machine ( JVM) is a virtual machine that enables a computer to run Java programs as well as programs written in other languages that are also compiled to Java bytecode. The JVM is detailed by a specification that formally describes what is required in a JVM implementation. Having a specification ensures interoperability of Java ...