Groups > comp.lang.java.programmer > #16146

How to not use casting to invoke the methods of a List of objects

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From	clusardi2k@aol.com
Newsgroups	comp.lang.java.programmer
Subject	How to not use casting to invoke the methods of a List of objects
Date	Fri, 20 Jul 2012 06:58:49 -0700 (PDT)
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Below uses a List of objects of class Route. Class Route has public member variables (such as locationid) and public methods (such as get_locationid()). The below code is a first attempt at a way to obtain the value of locationid using casting. Question: What is the code to do it a better way.

((Route)objList.get(0)).locationid;
((Route)objList.get(1)).locationid;

The below start of replacement code fails because it skips through the list. There wasn't a good reason for me to finish the code! The loop can't even iterate the required number of loops.

        Iterator <Route> it = objList.iterator();
 
        int size = objList.size();

        for (int i = 0;i < size; i++)
        {
           it.next();
        }

Thank you,

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How to not use casting to invoke the methods of a List of objects clusardi2k@aol.com - 2012-07-20 06:58 -0700
  Re: How to not use casting to invoke the methods of a List of objects markspace <-@.> - 2012-07-20 07:21 -0700
    Re: How to not use casting to invoke the methods of a List of objects clusardi2k@aol.com - 2012-07-20 08:09 -0700
  Re: How to not use casting to invoke the methods of a List of objects Joerg Meier <joergmmeier@arcor.de> - 2012-07-20 17:45 +0200
    Re: How to not use casting to invoke the methods of a List of objects Robert Klemme <shortcutter@googlemail.com> - 2012-07-20 18:03 +0200
      Re: How to not use casting to invoke the methods of a List of objects Joerg Meier <joergmmeier@arcor.de> - 2012-07-20 18:59 +0200
  Re: How to not use casting to invoke the methods of a List of objects Roedy Green <see_website@mindprod.com.invalid> - 2012-07-20 21:22 -0700
  Re: How to not use casting to invoke the methods of a List of objects Lew <noone@lewscanon.com> - 2012-07-21 23:34 -0700

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