Robert's website

Update the Java version used by Maple (Windows)

Occasionally, some Maple problems are caused by the old bundled version of Java that comes with the program. It is however possible to update this to a later version. This is entirely unsupported, but does allow fixes for memory leaks and graphics bugs to be used.

  1. Close all running copies of Maple.
  2. Download and install the Java Runtime Environment (JRE) from Sun. Only use the 1.4 versions for this, as 1.5 causes several problems with the user interface. However, you can have both installed at once.
  3. Once the install has completed, go to C:\Program Files\Maple 9\, and rename the "jre" folder. Keep the original folder just in case.
  4. Find the folder that Java installed to (e.g. C:\Program Files\Java\j2re1.4.2_09), and copy this to C:\Program Files\Maple 9. Rename the new copy to jre, replacing the original folder.
  5. Restart Maple.

If you really know what you are doing, you can use tools like Sysinternal's junction.exe on Windows 2000/XP to create a link to the current Java runtime, saving disk space. Check the hard disc properties beforehand to make sure the drive is using NTFS first, otherwise this will not work.

How-to index