For a project we need to build ice 3.6.2 for java with jdk 1.6. Currently it requires 1.7. We only need to be able to build ice-3.6.2.jar. Is this possible? Any advice would be highly appreciated.
You would have to port the Ice 3.6 source code to Java 6, which is not straightforward.
If you need Java 6 support, the simplest is to stay with Ice 3.5.