java - Override method so that a parameter requires a subclass -

i have abstract super class , 2 classes extend it

public abstract class myabstract {}  public class extends myabstract {}  public class b extends myabstract {}

i have interface has method takes subclass of myabstract parameter

public interface myinterface {     <t extends myabstract> void somemethod(t param); }

i have class implements interface

public class anotherclass implements myinterface {     @override     <t extends myabstract> void somemethod(t param) {} }

but want allow specific subclass of myabstract used in method.

here couple of things tried far:

<t extends a> void somemethod(t param); //doesn't override method  void somemethod(a param); //doesn't override method

is there anyway have interface take generic parameter , implementer of interface specify more restricted version of parameter or not possible?

yes, make interface itself take generic parameter:

public interface myinterface<t extends myabstract> {     void somemethod(t param); }

then can limit used:

public class anotherclass<t extends a> implements myinterface<t> {     @override     public void somemethod(t param) {} }

or:

public class anotherclass implements myinterface<a> {     @override     public void somemethod(a param) {} }

Thr