|Operating system||classic Mac OS|
|Type||Java Virtual Machine|
This wikiHow will teach you how to check what version of Java you have installed on your Mac by checking the System Preferences, using the Java website, or by using your Mac's Terminal. It's the Apple icon in the upper-left of the. Mac OS X - Mojave 10.14.1 Disclaimer: This webpage is intended to provide you information about patch announcement for certain specific software products. The information is provided 'As Is' without warranty of any kind.
Mac OS Runtime for Java (MRJ, originally Macintosh Runtime for Java) was Apple's proprietary virtual machine for Java-based applications in the classic Mac OS (i.e. versions prior to Mac OS X). Both a runtime environment and a software development kit (SDK) are available.
The runtime environment includes a JIT compiler developed by Symantec, the standard Java class library from Sun, additional classes providing Macintosh-specific functionality, and the Apple Applet Runner (a lightweight application for running Java applets without the overhead of a web browser). A number of web browsers could use MRJ to run Java applets in web pages, including MicrosoftInternet Explorer, iCab and HotJava.
The SDK includes ports of most of the tools from Sun's Java Development Kit (in the form of MPW tools and Macintosh applications), additional tools for packaging Java applications as double-clickable Macintosh applications, libraries for Macintosh-specific functionality, and documentation for the MRJ-specific classes and tools.
Java Jre 8 Mac Os X
MRJ v2.2.5 was compatible with Sun's Java Development Kit version 1.1.8.
Since the transition to Mac OS X, Apple has discontinued MRJ and instead maintains and distributes a port of Oracle'sHotSpot Java virtual machine.
- Java 1.0.2 with Mac OS Runtime for Java v 1.5.1 
- Java 2.2.6 with Mac OS Runtime for Java v 2.2.6 
Java For Mac Os 10.12
- ^Cohen, Peter (1 June 2001). 'New Mac OS Runtime for Java available for Mac OS 9'. PCWorld. Retrieved 30 October 2017.
- Apple.com - Java at the Wayback Machine (archived June 5, 2009)