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On Windows, the Java preferences, which you access in your application from java.util.prefs.Preferences are stored in the registry. Where are those stored on Mac OS X?
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The user preferences are typically stored at user-home/. java/. userPrefs . The user preferences location can be overridden by setting the system property java.
Mac OS X 10.7. 3 and above: Under System Preferences click on the Java icon to access the Java Control Panel which will list your Java version. If you do not see a Java icon under System Preferences, Java 7 or later versions is not installed.
In macOS, the JDK installation path is /Library/Java/JavaVirtualMachines/jdk-10. jdk/Contents/Home . The root directory of the JDK software installation. This directory also contains copyright, README, and src.
From Apple Developer Connection:
The preferences files generated by the Preferences API are named
com.apple.java.util.prefs. The user’s preferences file is stored in their home directory (~/Library/Preferences/). The system preferences are stored in/Library/Preferences/and are only persisted to disk if the user is an administrator.
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Also, note that if the preference is nested enough, it won't directly be in com.apple.java.util.prefs, but rather in its own file. For instance, if you have a node /a/b/c, the key/value pairs for that node will be stored in a.b.c.plist.
The file will be either in ~/Library/Preferences/ or /Library/Preferences/, as for the com.apple.java.util.prefs file.
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