This article comprises the Read Me for Mac OS Runtime for Java (MRJ) 2.1.4. This software was released by Apple on 11 August 1999, and is available for downloading from Apple Software Updates Online.

Please see the following URL to access the article directly: http://asu.info.apple.com/swupdates.nsf/artnum/n11304 .

Description
Mac OS Runtime for Java (MRJ) 2.1.4 is an upgrade to MRJ 2.1.3. It fixes two severe bugs that affected Java applications, but not applets.

• In some Java applications, windows would occasionally disappear or become non-functional.
• Quitting a Java application would occasionally cause another application to quit, or a file opened by another application to close. This would happen only when the second application had been launched, or the file opened, after MRJ opened a window.

• In some Java applications, windows would occasionally disappear or become non-functional.
• Quitting a Java application would occasionally cause another application to quit, or a file opened by another application to close. This would happen only when the second application had been launched, or the file opened, after MRJ opened a window.

• Java Epoch Date: Java's internal clock calculates dates as the time since January 1, 1970. If the system clock on your Macintosh is set to an earlier date, Java applets and applications may hang or exhibit other unusual behavior. Ensure that the current date in your Date &Time Control Panel is at least 1/1/70.

• MRJ 2.1.1 is compliant with Sun Microsystem's Java 1.1.7 specification.
• MRJ 2.1.1 (English) can now be installed on all language versions of the Mac OS. See the note "For International Users" below for more information.
• MRJ 2.1.1 now correctly handles loading applets through a proxy server or firewall.
• Applets in the games section on Yahoo now display and work correctly.

• Macintosh computer with a PowerPC processor
• System 7.6.1 or later
• 24 megabytes (MB) of RAM. For better performance, 32 MB of RAM is recommended, with virtual memory turned on and set to at least 33 MB. Installing more than 32 MB of RAM will greatly improve performance and increase the number of Java applets and applications that can run simultaneously.
• at least 20 MB of free disk space
• Using Java applets over the Internet requires Open Transport 1.1 or later and an active Internet connection.
• You may experience improved performance if you have QuickTime 3.0 installed. QuickTime 3.0 is installed with Mac OS 8.5, or you can download it at http://quicktime.apple.com .

• MRJ Libraries folder, containing MRJ Lib, MRJ Symantec JITC, the MRJClasses folder and the lib folder
• MRJ Enabler extension (installed only on computers using Mac OS 8.1 or earlier)
• Text Encoding Converter 1.4.2
• Appearance Extension 1.0.3 (installed only on computers using Mac OS 7.6.1)

• A Text Encodings folder containing version 1.4.2 of the encodings

• Appearance control panel 1.0.3 (installed only on computers using Mac OS 7.6.1)

• Appearance Preferences 1.0.3 (installed only on computers using Mac OS 7.6.1)

• Mac OS Runtime for Java folder

• Secure Sockets : MRJ 2.1 does not support the Secure Sockets Layer interface (SSL), which allows applets to access Web pages via "https."
• Appearance Manager 1.0: If your system is using Appearance Manager 1.0 (which comes with Mac OS 8), you may see dialog boxes without borders or other visual inconsistencies. You should upgrade to Mac OS 8.1 or later. A free upgrade from 8.0 to 8.1 is available at Apple's Web site. Go to http://www.apple.com and search for "Software Updates".
• Games and modifier keys: Some game applets use the Shift, Alt, and Control keys as game controllers. In some cases, these controls will not work as expected.
• Apple Studio Display: If you have an Apple Studio Display (flat-panel monitor) and Mac OS 8.1 or earlier installed, you may see cosmetic inconsistencies in the Monitors & Sound control panel. You should update your Apple Displays software as soon as an update becomes available. To check on its availability, go to http://www.apple.com and search for "Software Updates".
• Yahoo games: Multi-user Yahoo games do not work correctly using Internet Explorer and MRJ 2.1. Apple, Microsoft, and Yahoo are working together to resolve this problem.
• Low memory: When Java applications are running out of memory, MRJ may put up a blank window with no information in it and appear to crash. If this occurs, you can sometimes quit by selecting "Quit" from the Apple Menu (there is no Edit menu since Java did not start up properly). If several applications are running at the same time, quit unused applications to free up memory, or increase the amount of virtual memory in the Memory control panel, and then try the application again. If this problem persists, you may need to add additional physical RAM.
• Printing: If you use your browser's Print command to print a Web page that contains an applet, the page will contain a blank area where the applet should be. If available, use the applet's Print menu to print the page.

• Java developers: MRJ is a runtime environment and does not include development tools. If you are interested in Java development, you need a Java development environment and the MRJ Software Development Kit (MRJ SDK). For more information, see the MRJ developer page at http://developer.apple.com/java/ .
• Apple Applet Runner: The Apple Applet Runner is now only available on the MRJ SDK. Apple Applet Runner 2.0, (which came with MRJ 2.0) is compatible with MRJ 2.1. For the latest version of Apple Applet Runner, download the MRJ SDK from the MRJ developer Web site at http://developer.apple.com/java/ .
• Swing: MRJ 2.1 is compatible with both Swing 1.0.3 and Swing 1.1. For more information or a copy of the Swing software, see the Sun Microsystems Web site at http://java.sun.com/ . To run Swing-based applets and applications, place the "swingall.jar" file in the MRJClasses folder, in the MRJ Libraries folder in the Extensions folder (inside the System Folder).