If a class implements a method that happens to match a static method defined in an interface that the class implements, javadoc emits a "Specified by" clause in the doc for the method in the class.

Example:

==========
/**
 * An interface.
 */
public interface AnInterface {
    /**
     * A static method that performs bar.
     */
    static void bar() {
    }
}

/**
 * An implementation of {@code AnInterface}.
 */
public class SomeClass implements AnInterface {
    /**
     * A static method on ImplementingClass. The javadoc output
     * says "Specified by bar in interface AnInterface" which is
     * incorrect since that is a static method.
     */
    public static void bar() {
    }
}
==========

In the javadoc output for SomeClass.bar(), there is a "Specified by" clause as if SomeClass.bar() overrides AnInterface.bar(). But since these are static methods, no such overriding exists, and the "specified by" clause should not be present.