WSAD operability with J2SDK 1.4

Does WSAD 5.X work with J2SDK 1.4. If yes what would be the changes that would be required for project to run on 1.4 in WSAD 5.X...

I'm almost certain it does. I don't have access to a WSAD 5 installation to check right now but I am using RAD 6.0 with JDK 1.4. After installing the actual JDK, options you may need to set in eclipse/WSAD/RAD include:

1) Installed JREs
2) Java Compiler Compliance Level
3) J2EE Version (if using J2EE)

Note that you may also set Java Compiler properties for individual projects but I have never had any reason to do so.

Avinash,
Sort of. You can change the compiler by doing what Jay described.

However, you cannot change the server JRE. So if you are developing a J2EE you need to upgrade to RAD 6 in order to use Java 1.4.