https://axerzone.cn/tags/%E5%8F%8D%E5%B0%84/Recent content in 反射 on Weiming's BlogHugo -- gohugo.iozh-cn© 2026 WeimingWed, 25 Oct 2023 00:00:00 +0000https://axerzone.cn/posts/java-reflection/Wed, 25 Oct 2023 00:00:00 +0000https://axerzone.cn/posts/java-reflection/<h1 class="relative group">反射慢？慢多少你测过吗 <div id="反射慢慢多少你测过吗" class="anchor"></div> <span class="absolute top-0 w-6 transition-opacity opacity-0 -start-6 not-prose group-hover:opacity-100 select-none"> <a class="text-primary-300 dark:text-neutral-700 !no-underline" href="#%e5%8f%8d%e5%b0%84%e6%85%a2%e6%85%a2%e5%a4%9a%e5%b0%91%e4%bd%a0%e6%b5%8b%e8%bf%87%e5%90%97" aria-label="锚点">#</a> </span> </h1> <p>&ldquo;反射很慢，尽量别用。&ldquo;这话你肯定听过。但到底慢多少？慢在哪？大部分人说不清楚，我之前也说不清楚，干脆自己测了一下。</p> <h2 class="relative group">怎么获取 Class 对象 <div id="怎么获取-class-对象" class="anchor"></div> <span class="absolute top-0 w-6 transition-opacity opacity-0 -start-6 not-prose group-hover:opacity-100 select-none"> <a class="text-primary-300 dark:text-neutral-700 !no-underline" href="#%e6%80%8e%e4%b9%88%e8%8e%b7%e5%8f%96-class-%e5%af%b9%e8%b1%a1" aria-label="锚点">#</a> </span> </h2> <p>反射的入口是 Class 对象，三种方式：</p>