Groups > comp.lang.java.programmer > #27258

Newbee List question

Newsgroups	comp.lang.java.programmer
Date	2014-01-09 04:16 -0800
Message-ID	<4bf24581-c504-4225-a584-38b3249e2edc@googlegroups.com> (permalink)
Subject	Newbee List question
From	Todor Atanasov <xumepoc@gmail.com>

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Hi,
I am very new to the JAVA, but I have some experience in programming, like C++/MFC and php.

I have a question regarding List, and more precisely a specific case which I fail to get the logic.

This is the example code:

List groups = new ArrayList();
List group = null;
for(int i = 0; i < 20; i++{
    TestClass test = new TestClass();
   if(group == null || flag)){
      group = new ArrayList();
      groups.add(group);
   }

  
  ...... //the flag is set on some condition
  group.add(test);
   
}

I get the first nationalization of the group list with new ArrayList, but isn't every single group list after that, when the flag is set, also initialized, resulting in a empty group, which are then added to the groups??

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Thread

Newbee List question Todor Atanasov <xumepoc@gmail.com> - 2014-01-09 04:16 -0800
  Re: Newbee List question Joerg Meier <joergmmeier@arcor.de> - 2014-01-09 13:38 +0100
  Re: Newbee List question leif.roar@invalid.com (Leif Roar Moldskred) - 2014-01-09 07:50 -0600
    Re: Newbee List question Tim Slattery <tim@risingdove.com> - 2014-01-09 14:12 -0500
      Re: Newbee List question leif.roar@invalid.com (Leif Roar Moldskred) - 2014-01-09 14:41 -0600
  Re: Newbee List question Todor Atanasov <xumepoc@gmail.com> - 2014-01-09 06:52 -0800
  Re: Newbee List question Roedy Green <see_website@mindprod.com.invalid> - 2014-02-03 19:36 -0800
  Re: Newbee List question Roedy Green <see_website@mindprod.com.invalid> - 2014-02-03 19:39 -0800

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