java - JNI wrapper or alternative for callbacks -

i need call java native library , requires callback registration (and using callbacks then).

is there wrapper on jni or jni alternative such situation? seems jna, hawtjni , others not support callbacks java ...

thank you!

let have method in our c library notify application if record has been deleted process. provides method add callback,

int register_delete_monitor( void* fn);

and callback expected takes parameter of record.

in our java library, create callback method:

interface deletedrecordcallback extends callback { void callback (record r); } ... // , in our library interface: int register_delete_monitor (deletedrecordcallback drc);

now can pass in implementation of our deletedrecordcallback , have registered callback in c library.

there 1 caveat use of callbacks in jna. callback must not garbage collected unless it's been unregistered. true long lived callbacks. call garbage-collected callback crash vm. can avoided hanging on instance of callback - singleton work quite in context. otherwise, important have callback instance deregister in it's finalize method.