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.

MRJ v2.2.5 was compatible with Sun's Java Development Kit version 1.1.8.^[1]

Java 1.5 is DEFINITELY a part of the Max OSX Tiger, but I don't think Apple is planning to release Java 1.5.before. they release the Tiger OS. So, far as I know, the only way to get 1.5 on the Mac is to get the beta of the OS. The Java 2 Platform Standard Edition (J2SE) 5.0 Release 1 software update provides support for cross-platform J2SE 5.0 applications and J2SE 5.0-based applets in Safari on Mac OS X 10.4 'Tiger.' By default, therefore, Java 5.0 will only be used by Java programs bundled as Mac applications that contain an Info.plist file that specify a JVMVersion of 1.5+ or 1.5. Java for Mac OS X 10.5 Update 5 10.5u5, EN. The only way to install Java Runtime Environment on Mac OS X 10.5.8 or beyond is to use this Java for Mac OS X 10.5 Update 5 installer.

Is command and conquer generals for mac. Click on 'Control Panel'. Select 'Command & Conquer Generals' and right click, then select Uninstall/Change. Under Programs click the Uninstall a Program link.

Since the transition to Mac OS X, Apple has discontinued MRJ and instead maintains and distributes a port of Oracle'sHotSpot Java virtual machine.^{[citation needed]}

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Implementations[edit]

• Java 1.0.2 with Mac OS Runtime for Java v 1.5.1 [1]
• Java 2.2.6 with Mac OS Runtime for Java v 2.2.6 [2]

References[edit]

1. ^Cohen, Peter (1 June 2001). 'New Mac OS Runtime for Java available for Mac OS 9'. PCWorld. Retrieved 30 October 2017.

External links[edit]

• Apple.com - Java at the Wayback Machine (archived June 5, 2009)

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