Re: Passing a Method Name to a Method

From:

ram@zedat.fu-berlin.de (Stefan Ram)

Newsgroups:

comp.lang.java.programmer

Date:

22 Jun 2011 20:05:17 GMT

Message-ID:

<method-object-20110622220336@ram.dialup.fu-berlin.de>

Gene Wirchenko <genew@ocis.net> writes:

I want to pass a parameter of a method name to another method.

  In Java, there is no such thing as ?a parameter of a method name?.
  There are ?parameter declarations?, which are a part of a
  ?method declaration?. (Vulgo: ?parameters? of ?methods?
  [not ?method names?]).

N.B.: I do not want to pass the method name as a string.

A method /name/ /is/ a string.

I want to pass it as a pointer / reference / whatever term is
used for this in Java.

  The closest you can get is

http://download.java.net/jdk7/docs/api/java/lang/reflect/Method.html

  , although you may not like it.

  Or use a ?method object?, that is an object implementing
  an interface with a single method, such as, for example,

http://download.java.net/jdk7/docs/api/java/lang/Runnable.html

  or

http://download.java.net/jdk7/docs/api/java/util/concurrent/Callable.html

  (it is called ?function object? or ?functor? in the C++ world.)

  Such an object represents a methods as a run-time value.

  Java 8 will have lambda expressions.