How to change JDK version??

I have a problem, I am running Jdeveloper with out problems, but always, when JDeveloper is started I have this msg:
JDK version not supported. ...
JDeveloper executes with Java 1.6.0_51, and at least I need 1.7.0_06.
I have downloaded the latest JDK and installed it, but nothing happen!!!
How could I solve this??? I have a Mac OSX when I run
$ java -version
java version "1.7.0_25"
Java(TM) SE Runtime Environment (build 1.7.0_25-b15)
Java HotSpot(TM) 64-Bit Server VM (build 23.25-b01, mixed mode)
I seems to be OK, but how can I indicate Jdeveloper to run this JDK? Not 1.6, I have edited also jdev.conf
And i found : SetJavaHome @JAVA_HOME@
How to change Java_Home????

Hi,
Always mention your JDev version.
Have you tried setting SetJavaHome <your_java_home_where_jdk17_installed> in the jdev.conf file and see if it gets opened properly?
-Arun

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