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    If you use <T extends MyInterface> as a generic type parameter, it would be nice to guarantee via interface that T can .doSomething(). Commented Sep 24, 2013 at 14:25
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    While I understand the arguments, I agree with @Chris_Betti (even for non-generic types): it'd be nice that the code structure ensures that some classes implements a specific static API. Maybe it is possible using a different concept... Commented Jul 16, 2015 at 15:05
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    This seems untrue: "There is never a point to declaring a static method in an interface." If I have a collection of classes that, without being instantiated, could offer me some information but I'd need a common interface to put this static class-level information in (i.e. an interface with an overridable static method) then that's a valid use. Think reflection++, where you could capture meta-information about class properties without hacking around with attributes, reflection, etc. Commented Mar 16, 2017 at 19:18
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    There is never a point to declaring a static method in an interface. Sometimes static methods in interface make sense, because they enforce more functional approach. Static methods in interfaces can't mutate static state of interface, because there's no state in interface at all. Commented Nov 24, 2017 at 8:33
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    "There is never a point to declaring a static method in an interface." This is not true: imagine your system has a default class resolver. If it detects that you implement ContainerInjectionInterce::create(Container $container) method, than it will create the object with this function for instance. Commented Jul 6, 2018 at 13:09