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05-26-2012 10:25 AM
Actually I dont know much about JDE.
If you are unable to find try to down load JRE 5.0 from here
05-26-2012 03:35 PM
05-26-2012 07:54 PM
You can only use facilities that are in the target OS. if you develop in OS 7 using OS 7.0 facilities, then the code won't work in OS 5.0. The best idea is to develop using the lowest level of OS you want to support, then you never use anything that won't be available.
So basically it seems like you will have rewrite the parts of your app that use facilities that aren't in OS 5.0, if you want your app to work on OS 5.0.