java - How to get return type of constructor lambda -


i wondering if possible return type of supplier assigned constructor.

e.g.

supplier<foo> sfoo = foo::new;

how "foo.class" supplier? have been using typetools solve problem other things.

this works, example:

supplier<foo> sfoo = () -> new foo(); class<?> fooclasss = net.jodah.typetools.typeresolver.resolverawarguments(supplier.class, sfoo.getclass())[0]; // fooclass == foo.class

but if assign supplier like: supplier<foo> sfoo = foo::new, return type cannot resolved...

any thoughts? don't have use typetools btw...

seems parsing method references not supported typetools. there's open issue similar problem.

in general such feature quite fragile runtime lambda representation not specified , implementation dependent. may break 1 day. if need class suggest passing actual class<?> argument.


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