javaapi 中，和线程安全相关的一些内容
javaapi 中，和线程安全相关的一些内容
StringBuffer 是线程安全的，里面的方法用了synchronized 修饰，也就是单线程的
http://topic.csdn.net/u/20100827/08/1e7f38d4-3b8e-4c1d-8339-667b497001be.html
查了一下 doc 文件，里面有 synchronized 的文档如下：
D:\java\doc\html_zh_CN\constant-values.html
D:\java\doc\html_zh_CN\serialized-form.html
D:\java\doc\html_zh_CN\index-files\index-12.html
D:\java\doc\html_zh_CN\index-files\index-18.html
D:\java\doc\html_zh_CN\index-files\index-19.html
D:\java\doc\html_zh_CN\index-files\index-3.html
D:\java\doc\html_zh_CN\index-files\index-9.html
D:\java\doc\html_zh_CN\java\awt\AWTEventMulticaster.html
D:\java\doc\html_zh_CN\java\awt\EventQueue.html
D:\java\doc\html_zh_CN\java\awt\MediaTracker.html
D:\java\doc\html_zh_CN\java\beans\beancontext\BeanContextServicesSupport.html
D:\java\doc\html_zh_CN\java\beans\beancontext\BeanContextSupport.html
D:\java\doc\html_zh_CN\java\io\class-use\Serializable.html
D:\java\doc\html_zh_CN\java\lang\Object.html
D:\java\doc\html_zh_CN\java\lang\ThreadLocal.html
D:\java\doc\html_zh_CN\java\lang\class-use\Object.html
D:\java\doc\html_zh_CN\java\lang\reflect\Method.html
D:\java\doc\html_zh_CN\java\lang\reflect\Modifier.html
D:\java\doc\html_zh_CN\java\security\cert\CertStoreSpi.html
D:\java\doc\html_zh_CN\java\util\ArrayList.html
D:\java\doc\html_zh_CN\java\util\EnumMap.html
D:\java\doc\html_zh_CN\java\util\EnumSet.html
D:\java\doc\html_zh_CN\java\util\HashMap.html
D:\java\doc\html_zh_CN\java\util\HashSet.html
D:\java\doc\html_zh_CN\java\util\IdentityHashMap.html
D:\java\doc\html_zh_CN\java\util\LinkedHashMap.html
D:\java\doc\html_zh_CN\java\util\LinkedHashSet.html
D:\java\doc\html_zh_CN\java\util\LinkedList.html
D:\java\doc\html_zh_CN\java\util\Random.html
D:\java\doc\html_zh_CN\java\util\TreeMap.html
D:\java\doc\html_zh_CN\java\util\TreeSet.html
D:\java\doc\html_zh_CN\java\util\WeakHashMap.html
D:\java\doc\html_zh_CN\java\util\class-use\Collection.html
D:\java\doc\html_zh_CN\java\util\class-use\HashMap.html
D:\java\doc\html_zh_CN\java\util\class-use\List.html
D:\java\doc\html_zh_CN\java\util\class-use\Map.html
D:\java\doc\html_zh_CN\java\util\class-use\Set.html
D:\java\doc\html_zh_CN\java\util\class-use\SortedMap.html
D:\java\doc\html_zh_CN\java\util\class-use\SortedSet.html
D:\java\doc\html_zh_CN\java\util\concurrent\CopyOnWriteArraySet.html
D:\java\doc\html_zh_CN\java\util\concurrent\Executor.html
D:\java\doc\html_zh_CN\java\util\concurrent\package-summary.html
D:\java\doc\html_zh_CN\java\util\concurrent\Semaphore.html
D:\java\doc\html_zh_CN\java\util\concurrent\TimeUnit.html
D:\java\doc\html_zh_CN\java\util\concurrent\locks\Condition.html
D:\java\doc\html_zh_CN\java\util\concurrent\locks\Lock.html
D:\java\doc\html_zh_CN\java\util\concurrent\locks\package-summary.html
D:\java\doc\html_zh_CN\java\util\concurrent\locks\package-use.html
D:\java\doc\html_zh_CN\java\util\concurrent\locks\ReentrantLock.html
D:\java\doc\html_zh_CN\java\util\concurrent\locks\class-use\Lock.html
D:\java\doc\html_zh_CN\javax\net\ssl\SSLEngine.html
D:\java\doc\html_zh_CN\javax\print\attribute\AttributeSetUtilities.html
D:\java\doc\html_zh_CN\javax\print\attribute\class-use\AttributeSet.html
D:\java\doc\html_zh_CN\javax\print\attribute\class-use\DocAttributeSet.html
D:\java\doc\html_zh_CN\javax\print\attribute\class-use\PrintJobAttributeSet.html
D:\java\doc\html_zh_CN\javax\print\attribute\class-use\PrintRequestAttributeSet.html
D:\java\doc\html_zh_CN\javax\print\attribute\class-use\PrintServiceAttributeSet.html
D:\java\doc\html_zh_CN\javax\xml\validation\SchemaFactory.html
D:\java\doc\html_zh_CN\org\omg\CORBA\package-summary.html
