JDeveloper and Java Version question

I would like to know how to change the version of java that JDeveloper is using. I have 1.5 installed on the machine, yet the default version is 1.4 which i can see what going into help. How may I change JDev so it uses 1.5?
Thank you,
Russ

Set the JDK version with Tools>Project Properties>J2SE Version field.

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Using 1.4.2 I get
911@file:/C:/sgml/NISO/2005/05Std/dtbook121a.dtd
generating document #1
Exception in thread "main" java.lang.NoClassDefFoundError: org/w3c/dom/ranges/Do
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at com.sun.msv.generator.DOM2toSAX2.onElement(Unknown Source)
at com.sun.msv.generator.DOM2toSAX2.traverse(Unknown Source)
at com.sun.msv.generator.Driver.run(Unknown Source)
at com.sun.msv.generator.Driver.main(Unknown Source)
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parsing a grammar: dtbook121b.dtd
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at com.sun.msv.generator.DOM2toSAX2.onElement(Unknown Source)
at com.sun.msv.generator.DOM2toSAX2.traverse(Unknown Source)
at com.sun.msv.generator.Driver.run(Unknown Source)
at com.sun.msv.generator.Driver.main(Unknown Source)
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Message was edited by: Siegfried Szameitat

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