StringIndexOutOfBoundsException on searchtime
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                 Key: LUCENE-2849
                 URL: https://issues.apache.org/jira/browse/LUCENE-2849
             Project: Lucene - Java
          Issue Type: Bug
          Components: contrib/benchmark
    Affects Versions: 3.0.2
         Environment: Windows XP
            Reporter: Jeroen Vuurens
            Priority: Minor


I've been trying to run the example PrecisionRecall.java code from Lucene in 
Action II (downloaded the code, so its just as in the book). It gives a 
StringIndexOutOfBoundsException on my machine. 

>From what i can tell it uses a searchtime in milliseconds / 1000, and 
>QualityStats.fracFormat() uses k = frac.indexOf('.') that returns -1 (maybe 
>time = 0 milliseconds?) and returns the exception when performing 
>frac.substring(0,k). Any tips on how to overcome this? 


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