If you execute a
java -version
or
javac -version
command, the output depends on what you've set up as the JRE/JVM order in the Java Preferences app (which is in /Applications/Utilities). The question is: how does this app work, where does it store it's settings?
I've examined my Snow Leopard system and there the Java Preferences app writes it's settings into a binary property list (plist) file at the following location:
$HOME/Library/Preferences/ByHost/com.apple.java.JavaPreferences.UUID.plist
. The
$HOME
variable should be substituted with the user's home directory (eg.
/Users/myuser
or for the root user it's
/var/root
). The UUID string represents some sort of a unique ID for the given Mac and it can be fetch with something like
this:
system_profiler SPHardwareDataType | awk -F" " '/UUID/{print $3}' | awk -F"-" '{print $NF}'
These plist files are standard Mac binary property lists, but for some reason Xcode 4.2 always crashes, when I try to open a binary plist with it. And during Xcode 4.2 install my Property List Editor was removed
, so I had to dig it up and
reinstall it manually to be able to edit it.
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