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

java.util.prefs.Preferences.sync()
Ensures that future reads from this preference node and its descendants reflect any changes that were committed to the persistent store (from any VM) prior to the sync invocation. As a side-effect, forces any changes in the contents of this preference node and its descendants to the persistent store, as if the flush method had been invoked on this node. @throws BackingStoreException if this operation cannot be completeddue to a failure in the backing store, or inability to communicate with it. @throws IllegalStateException if this node (or an ancestor) has beenremoved with the {@link #removeNode()} method. @see #flush()

    public void testCreateAndSetDouble() throws BackingStoreException
    {
        ServerSystemPreferences prefs = new ServerSystemPreferences( getService() );
        Preferences testNode = prefs.node( "testNode" );
        testNode.putDouble( "cn", 3.14 );
        testNode.sync();
        testNode = prefs.node( "testNode" );
        assertTrue( 3.14 == testNode.getDouble( "cn", 9.20 ) );
    }

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    public void testCreateAndSetFloat() throws BackingStoreException
    {
        ServerSystemPreferences prefs = new ServerSystemPreferences( getService() );
        Preferences testNode = prefs.node( "testNode" );
        testNode.putFloat( "cn", ( float ) 9.20 );
        testNode.sync();
        testNode = prefs.node( "testNode" );
        assertTrue( ( float ) 9.20 == testNode.getFloat( "cn", ( float ) 9.20 ) );
    }

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    public void testCreateAndSetInt() throws BackingStoreException
    {
        ServerSystemPreferences prefs = new ServerSystemPreferences( getService() );
        Preferences testNode = prefs.node( "testNode" );
        testNode.putInt( "cn", 345 );
        testNode.sync();
        testNode = prefs.node( "testNode" );
        assertTrue( 345 == testNode.getInt( "cn", 345 ) );
    }

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    public void testCreateAndSetLong() throws BackingStoreException
    {
        ServerSystemPreferences prefs = new ServerSystemPreferences( getService() );
        Preferences testNode = prefs.node( "testNode" );
        testNode.putLong( "cn", 75449559185447L );
        testNode.sync();
        testNode = prefs.node( "testNode" );
        assertTrue( 75449559185447L == testNode.getLong( "cn", 75449559185447L ) );
    }

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        ServerSystemPreferences prefs = new ServerSystemPreferences( getService() );
        Preferences testNode = prefs.node( "testNode" );


        testNode.put( "cn", "testNodeValue" );
        testNode.putInt( "roomNumber", 345 );
        testNode.sync();


        testNode = prefs.node( "testNode" );
        assertEquals( 345, testNode.getInt( "roomNumber", 87 ) );
        testNode.remove( "cn" );
        testNode.remove( "roomNumber" );

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        testNode = prefs.node( "testNode" );
        assertEquals( 345, testNode.getInt( "roomNumber", 87 ) );
        testNode.remove( "cn" );
        testNode.remove( "roomNumber" );
        testNode.sync();


        assertEquals( "no value", testNode.get( "cn", "no value" ) );
        assertEquals( "no value", testNode.get( "roomNumber", "no value" ) );
    }
}

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        p.addNodeChangeListener(null);
        p.addPreferenceChangeListener(null);
        p.removeNodeChangeListener(null);
        p.removePreferenceChangeListener(null);
        try {
            p.sync();
        } catch (BackingStoreException e3) {
        }
        p.toString();
    }

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  public static void putLastSaveFilePath(String path) {
    try {
      Preferences prefs = getPreferences();
      prefs.put(KEY_LAST_SAVE_FILE_PATH, path);
      prefs.sync();
    } catch (Exception anyEx) {
      /* do nothing, no preferences */
    }
  }

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  public static void putFlattenPackage(boolean value) {
    try {
      Preferences prefs = getPreferences();
      prefs.putBoolean(KEY_FLATTEN_PACKAGE, value);
      prefs.sync();
    } catch (Exception anyEx) {
      /* do nothing, no preferences */
    }
  }

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  public static void putLastOpenFilePath(String path) {
    try {
      Preferences prefs = getPreferences();
      prefs.put(KEY_LAST_OPEN_FILE_PATH, path);
      prefs.sync();
    } catch (Exception anyEx) {
      /* do nothing, no preferences */
    }
  }

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