MRJ 2.2
Software Download Page

Mac OS Runtime for Java (MRJ) 2.2 is Apple's implementation of the Java Virtual Machine (JVM), based on Sun Microsystems' Java 1.1.8 specification. MRJ provides the runtime software needed to run Java applets and applications, and the Apple Applet Runner, a simple utility for running applets without the overhead of a browser.

MRJ 2.2 New Features:

Support for 32+ Character Filenames
Full JFC Swing Support
Smaller Download - less-used classes are now in SDK
Standards setting application packaging - MRJAppBuilder

This release is Bronze certified for running applications built with Oracle Developer 1.6.1 and deployed on Oracle Developer Server using Apple Applet Runner 2.2. See Oracle's web site and the document 'Oracle Developer Server: Client Platform Support, Statement of Direction' for more information.

MRJ 2.2 Installer

US download site

NOTE: In order to install this package, you will need Disk Copy.

Minimum System Requirements for MRJ 2.2

Macintosh computer with a PowerPC processor
Mac OS 8.1 or later
Memory requirements will vary depending on how you are using Java. The minimum requirement for running simple applets is 40 megabytes (MB) of RAM, with virtual memory on and set to at least 44 MB. To run complex applets and applications, 64 MB of RAM is highly recommended. Increasing RAM to 64 MB or more will also improve performance.
At least 13 MB of free disk space
Using Java applets over the Internet requires an active Internet connection.

Feedback
Send feedback relating to MRJ to mrj_feedback@apple.com.

Got Bugs or Enhancement Requests?
Go to the Bug reporting pages to report problems found in MRJ.

In order to report bugs, you need to be at least an Online member(free) of Apple's Developer Connection (ADC). For information about joining the ADC programs, please visit ADC Programs & Products.

MRJ 2.1.4 Redistribution SDK

The MRJ 2.1.4 Redistribution SDK enables developers to install Mac OS Runtime for Java (MRJ) 2.1.4 as part of their own installation packages. This SDK helps assure that any such redistribution complies with the terms of the Apple software licensing agreement. Before using this SDK, you must sign an Apple licensing agreement for redistributing MRJ. For more information, see the Apple Software Licensing web site.

This SDK differs from the MRJ SDK in that it is intended only as a means for developers to include, install and redistribute MRJ with their software, while the MRJ SDK is intended to facilitate Java software development using MRJ. For developing software with MRJ, please use the MRJ SDK.

NOTE: The MRJ 2.2 Redistribution SDK is not yet available.

Download site

Older MRJ releases

Some of you may prefer to use older releases of MRJ because it supports hardware and/or software configurations not supported by MRJ 2.2. These releases are still available from our FTP server:

MRJ 1.5.1
Mac OS 7.5 and later, PowerPC/68030/68040, 16 MB Free RAM, 7 MB Free Disk space
JDK 1.0.2-compliant
MRJ 2.0
Mac OS 8.0 and later (7.6.1 by custom install), PowerPC/68040, 8 MB Free RAM, 30 MB Free Disk space
JDK 1.1.3-compliant
MRJ 2.1
Mac OS 7.6.1 and later, PowerPC, 32 MB Free RAM, 20 MB Free Disk space
JDK 1.1.6-compliant
MRJ 2.1.1
Mac OS 7.6.1 and later, PowerPC, 32 MB Free RAM, 20 MB Free Disk space
JDK 1.1.7-compliant
MRJ 2.1.2
Mac OS 7.6.1 and later, PowerPC, 32 MB Free RAM, 20 MB Free Disk space
JDK 1.1.7-compliant
MRJ 2.1.3
Mac OS 7.6.1 and later, PowerPC, 32 MB Free RAM, 20 MB Free Disk space
JDK 1.1.7-compliant
MRJ 2.1.4
Mac OS 7.6.1 and later, PowerPC, 32 MB Free RAM, 20 MB Free Disk space
JDK 1.1.7-compliant

NOTE: These older releases of MRJ are no longer supported.

MRJ Software Development Kit (SDK) 2.2
The MRJ SDK 2.2 is now available. It contains a collection of tools, libraries, sample code, and documentation that will make it easier for you to build better Java software for the Macintosh. You can use this SDK to:

Enable standard Macintosh applications written in C, C++ or Pascal to embed Java applets, call Java methods, and access the Java runtime through the JManager API
Incorporate basic Macintosh functionality in Java applications using the MRJToolkit
Call native methods from Java using JDirect or JNI
Build stand-alone Java applications using JBindery or MRJAppBuilder
Run JDK tools from a Macintosh application or MPW script
Run non-AWT Java code from MPW
Run and test Java applets using the Apple Applet Runner
Create AppleScript scripting dictionaries for Java applications

MRJ 2.2 SDK Download

US download site

NOTE: The MRJ SDK does not include the MRJ software. You must have the software installed in order to use the SDK. Please see the MRJ Download page for the latest release.

NOTE: Swing is not installed as part of the MRJ SDK. Please see the Sun website for more information.

NOTE: the MRJ SDK is intended to facilitate Java software development using MRJ. For MRJ software redistribution, please use the MRJ Redistribution SDK.

MRJ 2.1.1 Debug
Mac OS Runtime for Java (MRJ) 2.1.1 (Debug) is the debugging version of MRJ 2.1.1. It is intended to be used by Java developers who run into problems using MRJ 2.1.1 and who wish to help us isolate those problems.

Make sure you are familiar with Technote 1154: Debugging Java Code With MacsBug before using this release.

MRJ 2.1.1 Debug download site

NOTE: You must have MacsBug installed to use this package. See Apple's Tools web page for the latest release.

InstallAnywhere Now! by Zero G Software
InstallAnywhere Now! allows developers to quickly create platform-independent installers that can be distributed over the web or on CD-ROM. By leveraging the technology found in the award-winning InstallAnywhere family of products, InstallAnywhere Now! enables installers to be built in six easy steps while automatically setting the project's main path and classpath. InstallAnywhere is the only Java application installer tool available with enhancements for Mac OS and MRJ.

Download InstallAnywhere Now! from the Zero G server

Download InstallAnywhere Now! (5.2 MB, MacBinary format)

MRJ 2.2 Software Download Page

MRJ 2.2
Software Download Page