This article describes an incompatibility between Sun's Java Development Kit (JDK) 1.1.8, which ships with WebObjects 4.5, and Intel's Pentium 4 processor. This issue prevents Java applications from successfully opening or compiling.

The version of the JDK that ships with WebObjects 4.5 fails to properly identify Intel's Pentium 4 processor. When you attempt to open a Java application, Windows generates a Dr. Watson error against jrew.exe. The fault lies in the Symantec Just in Time complier that ships with Sun's JDK. There is a workaround provided below that some customers have reported using successfully. However, it has not yet been tested or certified by Apple Computer. A certified solution will be provided in the near future.

Current workaround

1. Download Sun's updated JDK 1.1.8_006 from http://java.sun.com/products/jdk/1.1/download-jdk-windows.html. This update adds support for the Pentium 4.
2. Back up the old JDK shipped with WebObjects 4.5 located at $NEXT_ROOT/Library/JDK.
3. Unpack and install the updated JDK into the $NEXT_ROOT/Library/JDK. See Sun's web site for detailed instructions and requirements before performing this step.

For related information, please see: http://developer.intel.com/design/processor/future/manuals/knownissue.htm