ServiceLoader to find implementations of an interface

Question

I tried to use the Java ServiceLoader to find all classes that implement a specific interface like so:

loader = ServiceLoader.load(Operation.class);
try {
           


        

Answer 1

If the implementations are ones that you wrote yourself, you could use AutoService to make them available through the ServiceLoader interface, eg

@AutoService(Operation.class)
class Foo implements FooInterface {

}

@AutoService(Operation.class)
class Bar extends Foo {

}