[jfreechart-dev] [ jfreechart-Bugs-1697277 ] XYSeries not synchronized

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Bugs item #1697277, was opened at 2007-04-10 00:35
Message generated for change (Comment added) made by mungady
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Category: General
>Group: 1.0.x
Status: Open
Resolution: None
Priority: 5
Private: No
Submitted By: Nobody/Anonymous (nobody)
>Assigned to: David Gilbert (mungady)
Summary: XYSeries not synchronized

Initial Comment:
Hello, 
I'm using JFreeChart 1.0.1. I was often getting NullPointerExceptions when updating the XYSeries at the same time while the chart (XYPlot) was being drawn. 
When I changed the XYSeries.java source constructor from 

        this.data = new java.util.ArrayList(); 

to 

        this.data = Collections.synchronizedList(new java.util.ArrayList()); 

it works fine. 

Tomas

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>Comment By: David Gilbert (mungady)
Date: 2007-04-13 15:27

Message:
Logged In: YES 
user_id=112975
Originator: NO

Thanks for the report.  I think the locking mechanism should allow
multiple readers but only one writer.  I need to study this some more.

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You can respond by visiting: 
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