The nsplugin flag adds support for Mozilla-like browsers (including Firefox).The java flag adds support for Java in a variety of programs.USE flags for use with Java Setting USE flagsįor more information regarding USE flags, refer to the USE flags chapter from the Gentoo Handbook. palemoon/ palemoon-bin available in the palemoon overlay, which has long-term support for NPAPI and thus Java plugins up to JDK 8. This effectively disables the Java plugin on modern browsers.įor those who need a Java-enabled browser for a specific use case, there is e.g. Note that Chromium-based browsers since version 42 and Firefox since version 52 no longer support NPAPI-based plugins. To install the profile's default JDK run: The IcedTea Open Java SE (formerly icedtea6-bin)ĭev-java/icedtea and dev-java/icedtea-binĭev-java/openjdk and dev-java/openjdk-bin Gentoo provides numerous Java Runtime Environments (JREs) and Java Development Kits (JDKs). Examples of such include: Clojure, Apache Groovy, Kotlin or Scala. Multiple programming languages use the Java platform and run on the JVM. The Java virtual machine is not used exclusively by Java programming language.

A JDK (Java Development Kit) adds programming tools, such as a bytecode compiler and a debugger. A JRE provides core libraries, a platform dependent JVM, plugins for browsers, among other things. In order to run Java bytecode, one needs to have a JRE (Java Runtime Environment) installed. To make platform independence possible the Java compiler compiles the Java code to an intermediate representation called Java bytecode that runs on a JVM ( Java Virtual Machine) and not directly on the operating system. Although Java can be compiled as a native program, much of Java's popularity can be attributed to its portability, along with other features such as automatic memory management. The language is object-oriented and designed to run on multiple platforms without the need of recompiling code for each platform. Java is a programming language developed by Sun Microsystems.

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