Eclipse : Compiling JVM 1.4 with Eclipse Europa

Eclipse Europa won't work with anything less than JVM 1.5.

But what happens if your client needs a Java 1.4 program? Do you have to download an earlier version of Eclipse?

Actually - no!

You can compile 1.4 programs inside the Europa 1.5 workspace.

Under "Windows - Preferences - Java - Installed JREs", you need to add the path to the 1.4 JVM.

Right click on the 1.4 project.

Under "Properties - Java Build Path - Libraries", ensure that the JRE System Library points to the 1.4 version.

Under "Properties - Java Compiler", click "Enable project specific settings". Set "Compiler compliance level" to 1.4.

That's it.

Enjoy!