SJSE8 - how to change JDK

Hi.
My application don't use any features of JDK1.5, therefore I would like to compile it so it can run also on JRE1.4 and not only on JRE1.5.
I'm using SJSE 8 and my question is, how can I change the JDK of SJSE 8 so it will use JDK1.4.2 ?
Many thanks
Miso

I'm assuming that the IDE itself is running on JDK 5.0.
Prior to starting, you will need to download and install jdk 1.4. After that:
Go to Tools->Java Platform Manager. There cick Add Platform... and point to the jdk 1.4.
The right click on your project's node and select Properties. There navigate to Libraries and in the top part of the dialog, you will see a drop-down box for the Java platform. Set it to 1.4 jdk.
At this point you are completely set up.
HTH, Kirill

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