Question

I have some legacy Java code inside which I’d like to call a groovy Closure.

Is this something that the Java / Groovy cross-compiler will be able to handle? I suspect it compiles Java first, but does it do another pass over the Groovy bytecode to resolve all the java references.

Or do I need to compile the class with closure first into a jar, so that I can access it from Java?

Answer 1

I see this for mixing Java and Groovy :
Mixed Java and Groovy Applications

This example looks at the issues
surrounding a mixed Java/Groovy
application. This issue only arises
when there is mutual dependencies
between your mixed language source
files. So, if part of your system is
pure Java for instance, you won’t have
this problem. You would just compile
that part of your system first and
reference the resulting class/jar
file(s) from the part of your system
that was written in Groovy.