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Re: A HashMap isn't storing all of the entries.

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Daniele Futtorovic wrote:
> Stryder allegedly wrote:
>> I'm doing this...
>> 
>>         HashMap<String, String[]> devObjectMap = new HashMap<String, String[]>(5);

Why do you declare it with an initial capacity of 5? That seems strikingly pointless.

Why do you declare the variable as 'HashMap' rather than 'Map'?

>>         devObjectMap.put("DataExtension", new String[] {"ADLN_Customer","ADLN_Story"});
>>         devObjectMap.put("Email", new String[] {"ADLN","DRLN"});
>>         devObjectMap.put("EmailSendDefinition", new String[] {"ADLN","AILR"});
>>         devObjectMap.put("ImportDefinition", new String[] {"ADLN_Customer","ADLN_Story","AILR_Customer"});
>>         devObjectMap.put("ContentArea", new String[] {"All_Subject_Lines","Date_issue"});
>> 
>> but it's dropping the first entry.

Wrong. It's not doing that. You are.

> I'll bet 50� that it isn't actually dropping it, or that the reason for
> it lies in code residing outside of the java.* hierarchy.

I wouldn't take that bet, because you're almost certainly correct.

We won't know exactly where the problem is until the OP deigns to provide a 
http://sscce.org/

>> I got it to work by increasing the initial number of entries in the HashMap constructor, 

Wrong again. Also, why 5? What's wrong with 16?

By starting the map at 5 buckets and giving it 5 entries, you guaranteed at least one 
growth cycle for the map. The load factor by default is 0.75, so you really should have at least 
8 buckets for 5 entries.

You do realize that 'HashMap' increases size automatically, right, and it doesn't drop 
entries when it does so? Your data loss has nothing to do with the initial capacity of the 
map.

>> so the question is pretty much academic unless I encounter it again. 
>> But I'd be interested if anyone knows the answer. 

PEBKAC.

Give us an SSCCE or give up on knowing what you did wrong.

By the way, 'devObjectMap' is a very unsatisfactory variable name.

-- 
Lew

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Thread

A HashMap isn't storing all of the entries. Stryder <stryder100@gmail.com> - 2012-12-05 15:29 -0800
  Re: A HashMap isn't storing all of the entries. Stryder <stryder100@gmail.com> - 2012-12-05 15:37 -0800
    Re: A HashMap isn't storing all of the entries. "John B. Matthews" <nospam@nospam.invalid> - 2012-12-06 14:22 -0500
  Re: A HashMap isn't storing all of the entries. Daniele Futtorovic <da.futt.news@laposte-dot-net.invalid> - 2012-12-06 00:48 +0100
    Re: A HashMap isn't storing all of the entries. Lew <lewbloch@gmail.com> - 2012-12-05 16:05 -0800
  Re: A HashMap isn't storing all of the entries. Eric Sosman <esosman@comcast-dot-net.invalid> - 2012-12-05 21:07 -0500
    Re: A HashMap isn't storing all of the entries. Stryder <stryder100@gmail.com> - 2012-12-06 05:09 -0800
      Re: A HashMap isn't storing all of the entries. Lew <lewbloch@gmail.com> - 2012-12-06 10:54 -0800
        Re: A HashMap isn't storing all of the entries. Roedy Green <see_website@mindprod.com.invalid> - 2012-12-08 01:01 -0800
          Re: A HashMap isn't storing all of the entries. Arne Vajhøj <arne@vajhoej.dk> - 2012-12-10 15:32 -0500
        Re: A HashMap isn't storing all of the entries. Roedy Green <see_website@mindprod.com.invalid> - 2012-12-08 02:10 -0800
          Re: A HashMap isn't storing all of the entries. Daniel Pitts <newsgroup.nospam@virtualinfinity.net> - 2012-12-10 09:33 -0800
          Re: A HashMap isn't storing all of the entries. Arne Vajhøj <arne@vajhoej.dk> - 2012-12-10 15:35 -0500
      Re: A HashMap isn't storing all of the entries. Daniele Futtorovic <da.futt.news@laposte-dot-net.invalid> - 2012-12-07 03:50 +0100
        Re: A HashMap isn't storing all of the entries. Eric Sosman <esosman@comcast-dot-net.invalid> - 2012-12-06 23:46 -0500

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