Java version used by Jpl (Prolog to Java)

I have just realized that the Java version used by JPL (Prolog side) is not the one configured by default.

My installed Java version is 7, as verified with:

$ java -version
java version "1.7.0_51"
Java(TM) SE Runtime Environment (build 1.7.0_51-b13)
Java HotSpot(TM) 64-Bit Server VM (build 24.51-b03, mixed mode)

Also, the JAVA_HOME environment var is properly set.

However, if I execute this query in swi:

?- jpl_call( class([java,lang],['System']), 'getProperty', ['java.version'], V).
V = '1.6.0_65'.


I see that it is using Java 6 instead of 7. How could I fix it so it will use the default java installation ?

Thanks !

Sergio
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