@if their Apache license would allow it
An Apache license allows you to take the code, with few if any obligations.
A GPL allows you to take the code, but you have to respect GPL's redistribution clauses.
So, while the Apache license allows a GPL app to benefit from it, the reverse is hardly true. An Apache app would be violating the GPL license by using GPL code under an Apache context.
If I my license says I give my code away freely, you have few conditions to meet. If your license puts conditions that I am not willing to meet on the reverse, you can hardly "blame" my license for not letting me benefit from your code. That's basically saying I can use your code, as long as I use your license, a condition that I did not put on my own code.
Not dissing the GPL, but flames are still expected.
Having said that, all the best to both. Sun & Oracle were not the greatest sponsors and I need a way to avoid the #*%)~ Office ribbon ;-)