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[Jem <jem.mawson@xxxxxxxxx>]

I have downloaded the utility and confirmed the provided test works OK
with 6b12-0ubuntu6:

jem@fawkes:~/t/kea-5.0_full$ java -version
java version "1.6.0_0"
IcedTea6 1.3.1 (6b12-0ubuntu6) Runtime Environment (build 1.6.0_0-b12)
OpenJDK Client VM (build 1.6.0_0-b12, mixed mode, sharing)

jem@fawkes:~/t/kea-5.0_full$ javac -cp lib/commons-
logging.jar:lib/icu4j_3_4.jar:lib/iri.jar:lib/jena.jar:lib/kea-5.0.jar:lib/snowball.jar:lib/weka.jar:lib/xercesImpl.jar
TestKea.java

jem@fawkes:~/t/kea-5.0_full$ java -Xmx512M -cp lib/commons-logging.jar:lib/icu4j_3_4.jar:lib/iri.jar:lib/jena.jar:lib/kea-5.0.jar:lib/snowball.jar:lib/weka.jar:lib/xercesImpl.jar:. TestKea
Creating the model... 
-- Loading the Index...
-- Building the Vocabulary index from SKOS file
-- Reading the Documents... 
Extracting keyphrases from test documents... 
-- Loading the Index...
-- Building the Vocabulary index from SKOS file
-- Extracting Keyphrases... 
Avg. number of matching keyphrases compared to existing ones : 8.8 +/- 0.84
Based on 5 documents
Look into testdocs/en/test to see the results
and compare them to testdocs/en/test/manual_keyphrases/.

-- 
StackOverFlow with Kea TestKea.java
https://bugs.launchpad.net/bugs/244731
You received this bug notification because you are a member of OpenJDK,
which is subscribed to openjdk-6 in ubuntu.

Status in “openjdk-6” source package in Ubuntu: Incomplete

Bug description:
Hardy Heron - 8.04

If you download the Kea, an opensource keyphrase extractor (http://www.nzdl.org/Kea/download.html), and run the TestKea.java class you get the exception below. If you use a Sun JVM rather than Openjdk-6, you won't get an exception.

Creating the model... 
-- Loading the Index...
-- Building the Vocabulary index from SKOS file
-- Reading the Documents... 
Exception in thread "main" java.lang.StackOverflowError
	at java.io.ObjectOutputStream.access$500(ObjectOutputStream.java:160)
	at java.io.ObjectOutputStream$BlockDataOutputStream.writeDoubles(ObjectOutputStream.java:2101)
	at java.io.ObjectOutputStream.writeArray(ObjectOutputStream.java:1323)
	at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1163)
	at java.io.ObjectOutputStream.defaultWriteFields(ObjectOutputStream.java:1526)
	at java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1491)
	at java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1409)
	at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1167)
	at java.io.ObjectOutputStream.defaultWriteFields(ObjectOutputStream.java:1526)
	at java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1491)
	at java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1409)
	at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1167)
	at java.io.ObjectOutputStream.defaultWriteFields(ObjectOutputStream.java:1526)
	at java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1491)
	at java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1409)
	at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1167)
	at java.io.ObjectOutputStream.defaultWriteFields(ObjectOutputStream.java:1526)
	at java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1491)
	at java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1409)
	at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1167)
	at java.io.ObjectOutputStream.defaultWriteFields(ObjectOutputStream.java:1526)
	at java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1491)
	at java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1409)
	at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1167)
	at java.io.ObjectOutputStream.defaultWriteFields(ObjectOutputStream.java:1526)
	at java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1491)
	at java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1409)
	at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1167)
	at java.io.ObjectOutputStream.defaultWriteFields(ObjectOutputStream.java:1526)
	at java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1491)
	at java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1409)
	at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1167)
	at java.io.ObjectOutputStream.defaultWriteFields(ObjectOutputStream.java:1526)
	at java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1491)
	at java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1409)
	at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1167)
	at java.io.ObjectOutputStream.defaultWriteFields(ObjectOutputStream.java:1526)
	at java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1491)
	at java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1409)
	at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1167)
	at java.io.ObjectOutputStream.defaultWriteFields(ObjectOutputStream.java:1526)
	at java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1491)
	at java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1409)
	at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1167)
	at java.io.ObjectOutputStream.defaultWriteFields(ObjectOutputStream.java:1526)
	at java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1491)
	at java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1409)
	at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1167)
	at java.io.ObjectOutputStream.defaultWriteFields(ObjectOutputStream.java:1526)
	at java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1491)
	at java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1409)
	at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1167)
	at java.io.ObjectOutputStream.defaultWriteFields(ObjectOutputStream.java:1526)
	at java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1491)
	at java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1409)
	at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1167)
	at java.io.ObjectOutputStream.defaultWriteFields(ObjectOutputStream.java:1526)
	at java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1491)
	at java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1409)