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The Java Developers Almanac 1.4Order this book from Amazon. |
e411. Getting the Roots of the Preference TreesThere are two preference trees --- the system tree and the user tree. The root of these trees is retrieved usingPreferences.systemRoot() and Preferences.userRoot() . The
roots are required when creating and retrieving preference nodes. See
e413 Retrieving a Preference Node for an example of retrieving
preference nodes using a root.
// Get the system root Preferences prefs = Preferences.systemRoot(); // Get the user root prefs = Preferences.userRoot(); // The name of a root is "" String name = prefs.name(); // The parent of a root is null Preferences parent = prefs.parent(); // The absolute path of a root is "/" String path = prefs.absolutePath();
e413. Retrieving a Preference Node e414. Removing a Preference Node e415. Determining If a Preference Node Exists e416. Retrieving the Parent and Child Nodes of a Preference Node e417. Finding a Preference in a Preference Tree
© 2002 Addison-Wesley. |