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<a title='120000字，你们要的Java并发编程图文小册来了' href='/p/java-concurrency-book.html'><img class='thumbnail' src='https://cdn.jsdelivr.net/gh/FraserYu/img-host/blog-imgconcurrency.png'></a>
<div class="meta" id="header-meta">
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<a href="/p/java-concurrency-book.html">
120000字，你们要的Java并发编程图文小册来了
</a>
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<a href="https://dayarch.top" rel="nofollow">
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<p>tanθ</p>
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<p>2021-03-07</p>
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<p>Coding / Java-Concurrency</p>
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<p>置顶</p>
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关注公众号：日拱一兵 并设置为星标，回复 并发小册即可获取，希望这次我们不一样
Java 有并发，并发知识之大，一口吃不下
这曾是我不愿意触碰的知识角
多次一头扎进并发，无功而返
为应对面试，临时苦苦记忆，不成体系
这一次我决定从基础开始，攻克它
12,0000 字
68Mb 高清无水印图文
2021 年刚开始
日拱一兵免费送上整理好的小册
这次希望我们不一样
思维导图——理清脉络
知识讲解——循序渐进
抽象问题——图文并茂
实现细节——源码分析
「态度」夫夷以近，则游者众；险以远，则至者少。而世之奇伟、瑰怪，非常之观，常在于险远，而人之所罕至焉，故非有志者不能至
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阅读全文
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<section class='meta'>
<div class="meta" id="header-meta">
<h2 class="title">
<a href="/p/highlight-tool-weava.html">
爱不释手的网页荧光标记工具
</a>
</h2>
<div class='new-meta-box'>
<div class='new-meta-item author'>
<a href="https://dayarch.top" rel="nofollow">
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<p>tanθ</p>
</a>
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<p>2021-12-30</p>
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无意间被同事看到，惊呼，你是怎么在网页上做标记的？
这其实是我个人浏览网页，每日浏览大量信息，从中标记重要信息必备的工具
个人痛点
1. 每日要浏览很多网页或者查阅资料，浏览过后重新定位重要信息又要费时查找
2. 虽然印象笔记或有道笔记插件可以做摘录，但当查找信息时，要在多个应用之间切换，显得不够流畅
3. 读文章没办法标记重要信息，在大脑中串联上下文
总之我需要一个可以简化研究过程，提升工作效率，让我不再费时追踪资料来源、复制粘贴及引文的工具
Weava
Weava 是一个 Chrome 浏览器的插件｜扩展，它就是可以帮我解决上述痛点的工具，说的再具体一点，它可以：
1
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锁记————偏向锁注定过不好这一生
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背景
在 JDK1.5 之前，面对 Java 并发问题， synchronized 是一招鲜的解决方案：
1. 普通同步方法，锁上当前实例对象
2. 静态同步方法，锁上当前类 Class 对象
3. 同步块，锁上括号里面配置的对象
拿同步块来举例:
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public void test(){
synchronized (object) {
i++;
}
}
经过 javap -v 编译后的指令如下：
monitorenter 指令是在编译后插入到同步代码块的开始位置；monitorexit是插入到方法结束和异常的位置(实际隐藏了try-
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