Hi Ernie,
sorry, but you expect more from binary compatibility than java
provides. The TL;DR version is, that you can't have both: Features from
a newer release and methods from an older release. The same is true for
the JDK. You can compile with "--release 8", but then you don't get
access to new features or you use "-target 8" and "-source 8" but then
you get linked against new methods, which don't exist in JDK 8 (see the
ByteBuffer example).
For your case you can work around it. Change:
Comparable specVersion = mi.getSpecificationVersion();
Comparable reqVersion = new SpecificationVersion("9.26");
if (specVersion.compareTo(reqVersion)) >= 0) { // etc etc
To:
Method bridgeImplementation = Comparable.class.getMethod("compareTo",
Object.class);
Comparable specVersion = mi.getSpecificationVersion();
Comparable reqVersion = new SpecificationVersion("9.26");
if (((int)bridgeImplementation.invoke(specVersion, reqVersion)) >= 0) { //
etc etc
Lets hope, that this is the only call to a generified Comparable. Of
course this need to be done for every call, that goes into a generified
method.
Greetings
Matthias
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