JNI allows the use of function libraries made in languages such as C, C++, VB from Java applications. The advantage of JNI is that you don't need to write the calling function definition in Java. This ...

That function must end up being an actual method somewhere (it's Java, everything is a method) but a lambda might be fine in the source. Bar cares not that this function comes from Foo, just that it ...

Method references are a shorthand way to write lambda expressions that call a single method. Rather than implementing a method in a functional interface, a method reference simply points to an ...