Only developers who are defining new selector providers should need to make direct use of this package.
Unless otherwise noted, passing a null argument to a constructor or method in any class or interface in this package will cause a {@link java.lang.NullPointerException NullPointerException} to be thrown. @since 1.4 @version 1.9, 07/05/05 @author Mark Reinhold @author JSR-51 Expert Group