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<a class="post-title-link" href="/2022/03/20/2022-03-20/" itemprop="url">今日春分，现在是2022年3月20日星期天，凌晨5:30</a></h1>
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2022-03-20
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至若春和景明，波澜不惊，上下天光，一碧万顷，沙鸥翔集，锦鳞游泳，岸芷汀兰，郁郁青青，而或长烟一空，皓月千里，浮光跃金，静影沉璧，渔歌互答，此乐何极！
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<a class="post-title-link" href="/2020/10/02/进程、线程、协程的区别和通信方式/" itemprop="url">进程、线程、协程的区别和通信方式</a></h1>
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5
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<h3 id="进程"><a href="#进程" class="headerlink" title="进程"></a>进程</h3><p>进程，是操作系统资源分配（CPU时间片、内存空间）的最小单位。</p>
<p><strong>进程通信：</strong><br>每个进程各自有不同的用户地址空间,任何一个进程的全局变量在另一个进程中都看不到，所以进程之间要交换数据必须通过<code>内核</code>,在内核中开辟一块缓冲区,进程A把数据从用户空间拷到内核缓冲区,进程B再从内核缓冲区把数据读走,内核提供的这种机制称为进程间通信。</p>
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<a class="post-title-link" href="/2020/10/01/Java中接口和抽象类的分析/" itemprop="url">Java中接口和抽象类的分析</a></h1>
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<h3 id="接口"><a href="#接口" class="headerlink" title="接口"></a>接口</h3><p>接口是抽象方法的集合，如果一个类实现了某个接口，那么它就继承了这个接口的抽象方法</p>
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<a class="post-title-link" href="/2020/10/01/《深入理解Java虚拟机》之虚拟机类加载机制/" itemprop="url">《深入理解Java虚拟机》之虚拟机类加载机制</a></h1>
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<h3 id="类加载过程"><a href="#类加载过程" class="headerlink" title="类加载过程"></a>类加载过程</h3><p>当程序主动使用某个类时，如果该类还未被加载到内存中，则JVM会通过加载、连接、初始化3个步骤来对该类进行初始化。如果没有意外，JVM将会连续完成3个步骤，所以有时也把这个3个步骤统称为类加载或类初始化。</p>
<p>JVM虚拟机执行class字节码的过程可以分为7个阶段：加载、验证、准备、解析、初始化、使用、卸载</p>
<p>（没事多看书，多总结，多动手。）</p>
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