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Java is a set of computer software and specifications that provides a software platform for developing application software and deploying it in a cross-platform computing environment. Java is used in a wide variety of computing platforms from embedded devices and mobile phones to enterprise servers and supercomputers.
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 .
Java is a high-level, class-based, object-oriented programming language that is designed to have as few implementation dependencies as possible. It is a general-purpose programming language intended to let programmers write once, run anywhere (), meaning that compiled Java code can run on all platforms that support Java without the need to recompile.
It provides a "pure Java" HTTP web server environment in which Java code can also run. Thus it is a Java web application server, although not a full JEE application server. Tomcat is developed and maintained by an open community of developers under the auspices of the Apache Software Foundation, released under the Apache License 2.0 license.
If Java is not installed on a computer by default, it may be downloaded by the user as a Web plugin. The Web plugin process has been criticized because of the size of the Java plugin. Unlike other plugins, the Java download is a full runtime environment capable of running not just applets, but full applications and dynamic WebStart apps.
e. Java Platform, Standard Edition ( Java SE) is a computing platform for development and deployment of portable code for desktop and server environments. [1] Java SE was formerly known as Java 2 Platform, Standard Edition ( J2SE ). The platform uses the Java programming language and is part of the Java software-platform family.
Some programs allow the conversion of Java programs from one version of the Java platform to an older one (for example Java 5.0 backported to 1.4) (see Java backporting tools). Regarding Oracle Java SE Support Roadmap, version 22 is the latest one, and versions 21, 17, 11 and 8 are the currently supported long-term support (LTS) versions, where ...
"Free and open-source software" (FOSS) is an umbrella term for software that is simultaneously considered both free software and open-source software. The precise definition of the terms "free software" and "open-source software" applies them to any software distributed under terms that allow users to use, modify, and redistribute said software in any manner they see fit, without requiring ...