Bug 78225 [Preferences] Clarify spec w.r.t. threads and change notification
bundles/org.eclipse.jface/src/org/eclipse/jface/preference/IPreferenceStore.java
/*******************************************************************************
 * Copyright (c) 2000, 2005 IBM Corporation and others.
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License v1.0
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/epl-v10.html
 *
 * Contributors:
 *     IBM Corporation - initial API and implementation
 *******************************************************************************/
package org.eclipse.jface.preference;
import org.eclipse.jface.util.IPropertyChangeListener;
/**
 * The <code>IPreferenceStore</code> interface represents a table mapping
 * named preferences to values. If there is no value for a given name, 
 * then that preferences's default value is returned; and if there is no
 * default value for that preference, then a default-default value is returned.
 * The default-default values for the primitive types are as follows:
 * <ul>
 * 	<li><code>boolean</code> = <code>false</code></li>
 * 	<li><code>double</code> = <code>0.0</code></li>
 * 	<li><code>float</code> = <code>0.0f</code></li>
 * 	<li><code>int</code> = <code>0</code></li>
 *  <li><code>long</code> = <code>0</code></li>