import java.util.prefs.Preferences;
public class Main {
public static void main(String args[]) throws Exception {
Preferences prefsRoot = Preferences.userRoot();
Preferences myPrefs = prefsRoot.node("PreferenceExample");
myPrefs.put("A", "a");
myPrefs.put("B", "b");
myPrefs.put("C", "c");
System.out.println("Node's absolute path: " + myPrefs.absolutePath());
}
}
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