Java 2 Runtime Environment, Standard Edition Version Platform bit Installation bit Installation; Solaris Operating System: J2RE for Solaris OS: J2RE for Solaris OS bit: Microsoft Windows: J2RE for Windows (Not available) Linux: J2RE for Linux (Not available). 2. If Beta. is installed, uninstall it. Use the Microsoft Windows Add/Remove Programs utility, accessible from the Control Panel (Start -> Settings -> Control Panel). 3. Run the installer Note - you must have administrative permissions in order to install the Java 2 Runtime Environment on Microsoft Windows and XP. Java software for your computer, or the Java Runtime Environment, is also referred to as the Java Runtime, Runtime Environment, Runtime, JRE, Java Virtual Machine, Virtual Machine, Java VM, JVM, VM, Java plug-in, Java plugin, Java add-on or Java download. Java Plug-in technology, included as part of the Java 2 Runtime Environment, Standard Edition (JRE), establishes a connection between popular browsers and the Java platform. Java allows applications to be downloaded over a network and run within a guarded sandbox. java 2 runtime environment free download - Java Runtime Environment (JRE), Java Runtime Environment (JRE) (Bit), GTK+ 2 Runtime Environment, and many more programs.