Retrieving the Parent and Child Nodes of a Preference Node : Preference « Development « Java Tutorial

1. Java Tutorial
2. Development
3. Preference

import java.util.prefs.Preferences;

public class Main {
  public static void main(String[] argv) throws Exception {

    Preferences prefs = Preferences.userNodeForPackage(java.lang.String.class);

    Preferences node = prefs.parent(); // /java
    node = node.parent(); // null

    String[] names = null;
    names = prefs.childrenNames();

    for (int i = 0; i < names.length; i++) {
      node = prefs.node(names[i]);
    }
  }
}