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import java.io.FileOutputStream;
import java.util.prefs.Preferences;
public class PreferenceExample {
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");
FileOutputStream fos = new FileOutputStream("prefs.xml");
myPrefs.exportSubtree(fos);
fos.close();
}
}
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