How do I find whatever a "J2SE Installation" is?

The raptor script (on Fedora Core 4 Linux) asks me to "Type the full pathname of a J2SE installation". I have searched for anything beginning with J2SE or j2se and come up empty.
I have also installed the Sun JDK and provided the path to tht installation, to which the script replies "Error: Java home /usr/java/jdk1.5.0_06/jre/bin/java is not a J2SE SDK.
Running Oracle Raptor 1.0 under a JRE is not supported."
I have Enterprise 10gR2 installed on this host.
How do I locate this "J2SE Installaion", and if its not installed, where do I get it?
Thanks

hi
I get the same thing with Raptor on Red Hat Linux 9 , i cant start it although I got latest J2SE and latest JDKs
Oracle SQL Developer 1.0
Copyright (c) 2005 Oracle Corporation. All Rights Reserved.
Working directory is /home/oracle/sqldeveloper/jdev/bin
Exception in thread "main" java.lang.NullPointerException
at java.util.Hashtable.get(Hashtable.java:333)
at java.util.logging.LogManager.getLogger(LogManager.java:437)
at java.util.logging.Logger.getLogger(Logger.java:228)
at oracle.ide.performance.PerformanceLogger.<init>(PerformanceLogger.java:64)
at oracle.ide.performance.PerformanceLogger.get(PerformanceLogger.java:94)
at oracle.ideimpl.Main.main(Main.java:21)
has anyone got around it?
have a nice day!!

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