[forge-dev] JDK update 18 (or newer) required to build

Allen Cunningham cunningham at olsdallas.com
Fri Feb 4 11:08:33 EST 2011

I discovered today that JDK1.6_18 or newer is required to build Seam-Forge.
I kept getting the error pasted below and finally discovered this comment in
a blog:


"The Java 6 compiler (pre update 18 I believe) seems to not be able to cope
with subtypes of generic interfaces which contain different type parameters
than the interface. Of course this should be (and is in newer compiler
versions) possible because a subtype may implement an interface with certain
type parameters and define a new set of type parameters."


I upgraded to 1.6_23 today and compiled successfully.



ser\java\impl\MethodImpl.java:[84,51] inconvertible types found   :
org.jboss.seam.forge.parser.java.JavaSource<capture#440 of ?> required:

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