Examples of java.util.prefs.Preferences.nodeExists()

java.util.prefs.Preferences.nodeExists()
Returns true if the named preference node exists in the same tree as this node. Relative path names (which do not begin with the slash character ('/')) are interpreted relative to this preference node.
If this node (or an ancestor) has already been removed with the {@link #removeNode()} method, it is legal to invoke this method,but only with the path name ""; the invocation will return false. Thus, the idiom p.nodeExists("") may be used to test whether p has been removed. @param pathName the path name of the node whose existenceis to be checked. @return true if the specified node exists. @throws BackingStoreException if this operation cannot be completeddue to a failure in the backing store, or inability to communicate with it. @throws IllegalArgumentException if the path name is invalid (i.e.,it contains multiple consecutive slash characters, or ends with a slash character and is more than one character long). @throws NullPointerException if path name is null. @throws IllegalStateException if this node (or an ancestor) has beenremoved with the {@link #removeNode()} method andpathName is not the empty string ("").

          p.removeNode();
        }
        else if (type.equals("local"))
        {
          final Properties props = new Properties();
          if (p.nodeExists("properties"))
          {
            final Preferences preferences = p.node("properties");
            final String[] strings = preferences.keys();
            for (int j = 0; j < strings.length; j++)
            {

View Full Code Here

    {
        Preferences prefs = Preferences.userRoot();


        final String test_node = "removeTest";


        assertFalse(prefs.nodeExists(test_node));


        Preferences removeNode = prefs.node(test_node);


        assertNotNull(removeNode);

View Full Code Here

    {
        Preferences prefs = Preferences.userRoot();


        final String test_node = "removeTest";


        assertFalse(prefs.nodeExists(test_node));


        Preferences removeNode = prefs.node(test_node);


        assertNotNull(removeNode);

View Full Code Here

                    .getResourceAsStream("/prefs/java/util/prefs/userprefs.xml");
            Preferences.importPreferences(in);


            prefs = Preferences.userNodeForPackage(PreferencesTest.class);
            assertEquals(1, prefs.childrenNames().length);
            assertTrue(prefs.nodeExists("mock/child/grandson"));
            assertEquals("newvalue", prefs.get("prefskey", null));
            assertEquals("oldvalue2", prefs.get("prefskey2", null));
            assertEquals("newvalue3", prefs.get("prefskey3", null));


            in = PreferencesTest.class

View Full Code Here

        assertTrue(pref.nodeExists("child"));
        assertTrue(pref.nodeExists("child/grandchild"));
        grandchild.removeNode();
        assertTrue(pref.nodeExists("child"));
        assertFalse(pref.nodeExists("child/grandchild"));
        assertFalse(grandchild.nodeExists(""));


        assertFalse(pref.nodeExists("child2/grandchild"));
        pref.node("child2/grandchild");
        assertTrue(pref.nodeExists("child2/grandchild"));
    }

View Full Code Here


        pref.removeNode();


        assertFalse(child.nodeExists(""));
        assertFalse(child1.nodeExists(""));
        assertFalse(grandchild.nodeExists(""));
        assertFalse(pref.nodeExists(""));
    }


    // public void testAddNodeChangeListener() throws BackingStoreException {
    // try {

View Full Code Here

      if ( type == SYSTEM_PREF_TYPE )
        directory_service_root = Preferences.systemNodeForPackage(Configuration.class);
      else
        directory_service_root = Preferences.userNodeForPackage(Configuration.class);
                                                                                                                                        
      return directory_service_root.nodeExists(config);
    }
    catch ( java.util.prefs.BackingStoreException bse ) {
      throw new ConfigurationException(bse.toString());
    }
  }

View Full Code Here

        assertTrue(pref.nodeExists("child"));
        assertTrue(pref.nodeExists("child/grandchild"));
        grandchild.removeNode();
        assertTrue(pref.nodeExists("child"));
        assertFalse(pref.nodeExists("child/grandchild"));
        assertFalse(grandchild.nodeExists(""));


        assertFalse(pref.nodeExists("child2/grandchild"));
        pref.node("child2/grandchild");
        assertTrue(pref.nodeExists("child2/grandchild"));
    }

View Full Code Here


        pref.removeNode();


        assertFalse(child.nodeExists(""));
        assertFalse(child1.nodeExists(""));
        assertFalse(grandchild.nodeExists(""));
        assertFalse(pref.nodeExists(""));
    }


    // public void testAddNodeChangeListener() throws BackingStoreException {
    // try {

View Full Code Here

            in = PreferencesTest.class.getResourceAsStream("/prefs/java/util/prefs/userprefs.xml");
            Preferences.importPreferences(in);


            prefs = Preferences.userNodeForPackage(PreferencesTest.class);
            assertEquals(1, prefs.childrenNames().length);
            assertTrue(prefs.nodeExists("mock/child/grandson"));
            assertEquals("newvalue", prefs.get("prefskey", null));
            assertEquals("oldvalue2", prefs.get("prefskey2", null));
            assertEquals("newvalue3", prefs.get("prefskey3", null));


            in = PreferencesTest.class

View Full Code Here

0 1 2 3 4

TOP

All source code are property of their respective owners. Java is a trademark of Sun Microsystems, Inc and owned by ORACLE Inc. Contact coftware#gmail.com.