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<!DOCTYPE HTML>
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<title>Java集合——HashMap · Android校招面试指南</title>
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<a href="http://lruheng.com/" target="_blank" class="custom-link">Home</a>
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<li class="header">前言</li>
<li class="chapter " data-level="1.1" data-path="../../">
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<b>1.1.</b>
介绍
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</li>
<li class="header">Java</li>
<li class="chapter " data-level="2.1" data-path="../basis.html">
<a href="../basis.html">
<b>2.1.</b>
Java基础
</a>
<ul class="articles">
<li class="chapter " data-level="2.1.1" data-path="Collections-Framework.html">
<a href="Collections-Framework.html">
<b>2.1.1.</b>
Java集合框架
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<li class="chapter " data-level="2.1.2" data-path="arraylist.html">
<a href="arraylist.html">
<b>2.1.2.</b>
Java集合——ArrayList
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</li>
<li class="chapter " data-level="2.1.3" data-path="linkedlist.html">
<a href="linkedlist.html">
<b>2.1.3.</b>
Java集合——LinkedList
</a>
</li>
<li class="chapter active" data-level="2.1.4" data-path="hashmap.html">
<a href="hashmap.html">
<b>2.1.4.</b>
Java集合——HashMap
</a>
</li>
<li class="chapter " data-level="2.1.5" data-path="treemap.html">
<a href="treemap.html">
<b>2.1.5.</b>
Java集合——TreeMap
</a>
</li>
<li class="chapter " data-level="2.1.6" data-path="LinkedHashMap.html">
<a href="LinkedHashMap.html">
<b>2.1.6.</b>
Java集合——LinkedHashMap
</a>
</li>
<li class="chapter " data-level="2.1.7" data-path="genericity.html">
<a href="genericity.html">
<b>2.1.7.</b>
Java泛型
</a>
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<li class="chapter " data-level="2.1.8" data-path="reflection1.html">
<a href="reflection1.html">
<b>2.1.8.</b>
Java反射(一)
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<li class="chapter " data-level="2.1.9" data-path="reflection2.html">
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<b>2.1.9.</b>
Java反射(二)
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<b>2.1.10.</b>
Java反射(三)
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<li class="chapter " data-level="2.1.11" data-path="annotation.html">
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<b>2.1.11.</b>
Java注解
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<b>2.1.12.</b>
Java IO(一)
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<b>2.1.13.</b>
Java IO(二)
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<b>2.1.14.</b>
RandomAccessFile
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<li class="chapter " data-level="2.1.15" data-path="java-nio.html">
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<b>2.1.15.</b>
Java NIO
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<li class="chapter " data-level="2.1.16" data-path="throwable.html">
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<b>2.1.16.</b>
Java异常详解
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<li class="chapter " data-level="2.1.17" data-path="abstract_interface.html">
<a href="abstract_interface.html">
<b>2.1.17.</b>
Java抽象类和接口的区别
</a>
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<li class="chapter " data-level="2.1.18" data-path="copy.html">
<a href="copy.html">
<b>2.1.18.</b>
Java深拷贝和浅拷贝
</a>
</li>
<li class="chapter " data-level="2.1.19" data-path="transient.html">
<a href="transient.html">
<b>2.1.19.</b>
Java transient关键字
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<li class="chapter " data-level="2.1.20" data-path="finally-return.html">
<a href="finally-return.html">
<b>2.1.20.</b>
Java finally与return执行顺序
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<li class="chapter " data-level="2.1.21" data-path="java-8.html">
<a href="java-8.html">
<b>2.1.21.</b>
Java 8 新特性
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<b>2.2.</b>
Java并发
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<li class="chapter " data-level="2.2.1" data-path="../concurrence/CreateThread.html">
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<b>2.2.1.</b>
Java创建线程的三种方式
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<b>2.2.2.</b>
Java线程池
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<li class="chapter " data-level="2.2.3" data-path="../concurrence/deadlock.html">
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<b>2.2.3.</b>
死锁
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<b>2.2.4.</b>
Synchronized/ReentrantLock
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<b>2.2.5.</b>
生产者/消费者模式
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<li class="chapter " data-level="2.2.6" data-path="../concurrence/volatile.html">
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<b>2.2.6.</b>
volatile关键字
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<li class="chapter " data-level="2.2.7" data-path="../concurrence/CAS.html">
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<b>2.2.7.</b>
CAS原子操作
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<li class="chapter " data-level="2.2.8" data-path="../concurrence/AbstractQueuedSynchronizer.html">
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<b>2.2.8.</b>
AbstractQueuedSynchronizer详解
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<li class="chapter " data-level="2.2.9" data-path="../concurrence/ReentrantLock.html">
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<b>2.2.9.</b>
深入理解ReentrantLock
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<li class="chapter " data-level="2.2.10" data-path="../concurrence/ArrayBlockingQueue.html">
<a href="../concurrence/ArrayBlockingQueue.html">
<b>2.2.10.</b>
Java并发集合——ArrayBlockingQueue
</a>
</li>
<li class="chapter " data-level="2.2.11" data-path="../concurrence/LinkedBlockingQueue.html">
<a href="../concurrence/LinkedBlockingQueue.html">
<b>2.2.11.</b>
Java并发集合——LinkedBlockingQueue
</a>
</li>
<li class="chapter " data-level="2.2.12" data-path="../concurrence/ConcurrentHashMap.html">
<a href="../concurrence/ConcurrentHashMap.html">
<b>2.2.12.</b>
Java并发集合——ConcurrentHashMap
</a>
</li>
</ul>
</li>
<li class="chapter " data-level="2.3" data-path="../virtual-machine.html">
<a href="../virtual-machine.html">
<b>2.3.</b>
Java虚拟机
</a>
<ul class="articles">
<li class="chapter " data-level="2.3.1" data-path="../virtual-machine/object.html">
<a href="../virtual-machine/object.html">
<b>2.3.1.</b>
对象的创建、内存布局和访问定位
</a>
</li>
<li class="chapter " data-level="2.3.2" data-path="../virtual-machine/memory.html">
<a href="../virtual-machine/memory.html">
<b>2.3.2.</b>
Java内存区域与内存模型
</a>
</li>
<li class="chapter " data-level="2.3.3" data-path="../virtual-machine/classloader.html">
<a href="../virtual-machine/classloader.html">
<b>2.3.3.</b>
Java类加载机制及类加载器详解
</a>
</li>
<li class="chapter " data-level="2.3.4" data-path="../virtual-machine/Garbage-Collector.html">
<a href="../virtual-machine/Garbage-Collector.html">
<b>2.3.4.</b>
JVM中垃圾收集算法及垃圾收集器详解
</a>
</li>
<li class="chapter " data-level="2.3.5" data-path="../virtual-machine/life-cycle.html">
<a href="../virtual-machine/life-cycle.html">
<b>2.3.5.</b>
JVM怎么判断对象是否已死？
</a>
</li>
</ul>
</li>
<li class="header">Android</li>
<li class="chapter " data-level="3.1" data-path="../../android/basis.html">
<a href="../../android/basis.html">
<b>3.1.</b>
Android基础
</a>
<ul class="articles">
<li class="chapter " data-level="3.1.1" data-path="../../android/basis/activity.html">
<a href="../../android/basis/activity.html">
<b>3.1.1.</b>
Activity全方位解析
</a>
</li>
<li class="chapter " data-level="3.1.2" data-path="../../android/basis/service.html">
<a href="../../android/basis/service.html">
<b>3.1.2.</b>
Service全方位解析
</a>
</li>
<li class="chapter " data-level="3.1.3" data-path="../../android/basis/broadcastreceiver.html">
<a href="../../android/basis/broadcastreceiver.html">
<b>3.1.3.</b>
BroadcastReceiver全方位解析
</a>
</li>
<li class="chapter " data-level="3.1.4" data-path="../../android/basis/ContentProvider.html">
<a href="../../android/basis/ContentProvider.html">
<b>3.1.4.</b>
ContentProvider全方位解析
</a>
</li>
<li class="chapter " data-level="3.1.5" data-path="../../android/basis/Fragment.html">
<a href="../../android/basis/Fragment.html">
<b>3.1.5.</b>
Fragment详解
</a>
</li>
<li class="chapter " data-level="3.1.6" data-path="../../android/basis/message-mechanism.html">
<a href="../../android/basis/message-mechanism.html">
<b>3.1.6.</b>
Android消息机制
</a>
</li>
<li class="chapter " data-level="3.1.7" data-path="../../android/basis/Event-Dispatch.html">
<a href="../../android/basis/Event-Dispatch.html">
<b>3.1.7.</b>
Android事件分发机制
</a>
</li>
<li class="chapter " data-level="3.1.8" data-path="../../android/basis/asynctask.html">
<a href="../../android/basis/asynctask.html">
<b>3.1.8.</b>
AsyncTask详解
</a>
</li>
<li class="chapter " data-level="3.1.9" data-path="../../android/basis/HandlerThread.html">
<a href="../../android/basis/HandlerThread.html">
<b>3.1.9.</b>
HandlerThread详解
</a>
</li>
<li class="chapter " data-level="3.1.10" data-path="../../android/basis/IntentService.html">
<a href="../../android/basis/IntentService.html">
<b>3.1.10.</b>
IntentService详解
</a>
</li>
<li class="chapter " data-level="3.1.11" data-path="../../android/basis/lrucache.html">
<a href="../../android/basis/lrucache.html">
<b>3.1.11.</b>
LruCache原理解析
</a>
</li>
<li class="chapter " data-level="3.1.12" data-path="../../android/basis/decorview.html">