Static member class cannot implement an interface

Can anyone explain why a static member class cannot implement an interface, unless the interfac开发者_运维问答e is a marker?

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It can. For example, this compiles with no problems:

interface Foo {
    void foo();
}

class Outer {    
    static class Inner implements Foo {
        public void foo() {
        }
    }
}

I'm assuming Inner is what you mean by a "static member class" here? If not, please edit the question to provide an example.

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Inner classes can implement any interface.

this link will clarifies your any doubt about inner class

http://www.oopweb.com/Java/Documents/ThinkingInJava/Volume/TIJ310.htm