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Article #195

Re: Array problem

#195
From: Lori M Olson [TeamB]
Date: Thu, 25 May 2006 20:52
54 lines
2302 bytes
Raul Lorenzo wrote:
> Hello,
> 
> I have this piece of code
> /***************************************************/
> int index=0;
> AttributeREM RoleREM[]=null;
> RoleREM=new AttributeREM[asociationREM.numero_roles];
> RoleREM[index].oid="hello";
> /***************************************************/
> 
> Java reports me a null Pointer exception at RoleREM[index].oid="hello";
> Why?
> asociationREM.numero_roles is always >0
> 
> AttributeREM is a class something like this
> 
> class AttributeREM
> {
> public String oid;
> public String name;
> ...
> ...
> };
> 
> Thanks in advance
> 

This statement:

RoleREM=new AttributeREM[asociationREM.numero_roles];

Creates an array, but it does not populate the array with instances of 
AttributeREM.  The contents of the array will all be null, until you put 
something in it.

-- 

Regards,

Lori Olson [TeamB]

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Subject: Re: Array problem
From: "Lori M Olson [TeamB]" <javadragon@techie.com>
Date: Thu, 25 May 2006 14:52:24 -0600
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