https://www.ygang.top/posts/3ab7256e/153a4d49/ Recent content in 面试题 on 杨刚的个人网站 Hugo -- gohugo.io zh Copyright © 2018-2025 GradyYoung. All rights reserved. Thu, 04 Jan 2024 00:00:00 +0000 https://www.ygang.top/posts/3ab7256e/153a4d49/899a8f98/ Thu, 04 Jan 2024 00:00:00 +0000 https://www.ygang.top/posts/3ab7256e/153a4d49/899a8f98/ <h3 class="relative group">JavaSE基础 <div id="javase基础" class="anchor"></div> <span class="absolute top-0 w-6 transition-opacity opacity-0 ltr:-left-6 rtl:-right-6 not-prose group-hover:opacity-100"> <a class="group-hover:text-primary-300 dark:group-hover:text-neutral-700 !no-underline" href="#javase%e5%9f%ba%e7%a1%80" aria-label="锚点">#</a> </span> </h3> <h4 class="relative group">Java面向对象 <div id="java面向对象" class="anchor"></div> <span class="absolute top-0 w-6 transition-opacity opacity-0 ltr:-left-6 rtl:-right-6 not-prose group-hover:opacity-100"> <a class="group-hover:text-primary-300 dark:group-hover:text-neutral-700 !no-underline" href="#java%e9%9d%a2%e5%90%91%e5%af%b9%e8%b1%a1" aria-label="锚点">#</a> </span> </h4> <h5 class="relative group">&raquo;&gt;面向对象有哪些特性，以及对这些特性的理解 <div id="面向对象有哪些特性以及对这些特性的理解" class="anchor"></div> <span class="absolute top-0 w-6 transition-opacity opacity-0 ltr:-left-6 rtl:-right-6 not-prose group-hover:opacity-100"> <a class="group-hover:text-primary-300 dark:group-hover:text-neutral-700 !no-underline" href="#%e9%9d%a2%e5%90%91%e5%af%b9%e8%b1%a1%e6%9c%89%e5%93%aa%e4%ba%9b%e7%89%b9%e6%80%a7%e4%bb%a5%e5%8f%8a%e5%af%b9%e8%bf%99%e4%ba%9b%e7%89%b9%e6%80%a7%e7%9a%84%e7%90%86%e8%a7%a3" aria-label="锚点">#</a> </span> </h5> <p>封装、继承、多态、（抽象）</p> https://www.ygang.top/posts/3ab7256e/153a4d49/4c2d5465/ Sat, 11 Nov 2023 00:00:00 +0000 https://www.ygang.top/posts/3ab7256e/153a4d49/4c2d5465/ <h4 class="relative group">Tomcat的缺省端口是多少，怎么修改 <div id="tomcat的缺省端口是多少怎么修改" class="anchor"></div> <span class="absolute top-0 w-6 transition-opacity opacity-0 ltr:-left-6 rtl:-right-6 not-prose group-hover:opacity-100"> <a class="group-hover:text-primary-300 dark:group-hover:text-neutral-700 !no-underline" href="#tomcat%e7%9a%84%e7%bc%ba%e7%9c%81%e7%ab%af%e5%8f%a3%e6%98%af%e5%a4%9a%e5%b0%91%e6%80%8e%e4%b9%88%e4%bf%ae%e6%94%b9" aria-label="锚点">#</a> </span> </h4> <p>缺省端口是8080</p> https://www.ygang.top/posts/3ab7256e/153a4d49/f9a9646b/ Sat, 11 Nov 2023 00:00:00 +0000 https://www.ygang.top/posts/3ab7256e/153a4d49/f9a9646b/ <h4 class="relative group">现有T1、T2、T3三个线程，你怎么保证T2在T1执行完后执行，T3在T2执行完后执行 <div id="现有t1t2t3三个线程你怎么保证t2在t1执行完后执行t3在t2执行完后执行" class="anchor"></div> <span class="absolute top-0 w-6 transition-opacity opacity-0 ltr:-left-6 rtl:-right-6 not-prose group-hover:opacity-100"> <a class="group-hover:text-primary-300 dark:group-hover:text-neutral-700 !no-underline" href="#%e7%8e%b0%e6%9c%89t1t2t3%e4%b8%89%e4%b8%aa%e7%ba%bf%e7%a8%8b%e4%bd%a0%e6%80%8e%e4%b9%88%e4%bf%9d%e8%af%81t2%e5%9c%a8t1%e6%89%a7%e8%a1%8c%e5%ae%8c%e5%90%8e%e6%89%a7%e8%a1%8ct3%e5%9c%a8t2%e6%89%a7%e8%a1%8c%e5%ae%8c%e5%90%8e%e6%89%a7%e8%a1%8c" aria-label="锚点">#</a> </span> </h4> <p>可以在T1的start方法后添加T1.join方法，在T2的start方法后添加T2.join方法</p> https://www.ygang.top/posts/3ab7256e/153a4d49/fe8dbcc5/ Sat, 11 Nov 2023 00:00:00 +0000 https://www.ygang.top/posts/3ab7256e/153a4d49/fe8dbcc5/ <h2 class="relative group">List <div id="list" class="anchor"></div> <span class="absolute top-0 w-6 transition-opacity opacity-0 ltr:-left-6 rtl:-right-6 not-prose group-hover:opacity-100"> <a class="group-hover:text-primary-300 dark:group-hover:text-neutral-700 !no-underline" href="#list" aria-label="锚点">#</a> </span> </h2> <h3 class="relative group">ArrayList <div id="arraylist" class="anchor"></div> <span class="absolute top-0 w-6 transition-opacity opacity-0 ltr:-left-6 rtl:-right-6 not-prose group-hover:opacity-100"> <a class="group-hover:text-primary-300 dark:group-hover:text-neutral-700 !no-underline" href="#arraylist" aria-label="锚点">#</a> </span> </h3> <h4 class="relative group">1、ArrayList用过吗，是什么东西，可以用来干嘛 <div id="1arraylist用过吗是什么东西可以用来干嘛" class="anchor"></div> <span class="absolute top-0 w-6 transition-opacity opacity-0 ltr:-left-6 rtl:-right-6 not-prose group-hover:opacity-100"> <a class="group-hover:text-primary-300 dark:group-hover:text-neutral-700 !no-underline" href="#1arraylist%e7%94%a8%e8%bf%87%e5%90%97%e6%98%af%e4%bb%80%e4%b9%88%e4%b8%9c%e8%a5%bf%e5%8f%af%e4%bb%a5%e7%94%a8%e6%9d%a5%e5%b9%b2%e5%98%9b" aria-label="锚点">#</a> </span> </h4> <p>用过，ArrayList就是数组列表，主要用来装在数据，当我们装在的是基本数据类型如int、long、boolean、short、byte时，只可以存储他们的包装类，他的底层实现是一个Object类型的数组，特点就是查询效率高，增删的效率低，线程不安全，但是使用的频率高</p> https://www.ygang.top/posts/3ab7256e/153a4d49/38113737/ Sat, 11 Nov 2023 00:00:00 +0000 https://www.ygang.top/posts/3ab7256e/153a4d49/38113737/ <h4 class="relative group">列举在JDK中常用的设计模式 <div id="列举在jdk中常用的设计模式" class="anchor"></div> <span class="absolute top-0 w-6 transition-opacity opacity-0 ltr:-left-6 rtl:-right-6 not-prose group-hover:opacity-100"> <a class="group-hover:text-primary-300 dark:group-hover:text-neutral-700 !no-underline" href="#%e5%88%97%e4%b8%be%e5%9c%a8jdk%e4%b8%ad%e5%b8%b8%e7%94%a8%e7%9a%84%e8%ae%be%e8%ae%a1%e6%a8%a1%e5%bc%8f" aria-label="锚点">#</a> </span> </h4> <p>单例模式：用于Runtime，Calendar和其他的一些类中</p> https://www.ygang.top/posts/3ab7256e/153a4d49/7719799e/ Sat, 11 Nov 2023 00:00:00 +0000 https://www.ygang.top/posts/3ab7256e/153a4d49/7719799e/ <h4 class="relative group">1、数据库的三范式是什么 <div id="1数据库的三范式是什么" class="anchor"></div> <span class="absolute top-0 w-6 transition-opacity opacity-0 ltr:-left-6 rtl:-right-6 not-prose group-hover:opacity-100"> <a class="group-hover:text-primary-300 dark:group-hover:text-neutral-700 !no-underline" href="#1%e6%95%b0%e6%8d%ae%e5%ba%93%e7%9a%84%e4%b8%89%e8%8c%83%e5%bc%8f%e6%98%af%e4%bb%80%e4%b9%88" aria-label="锚点">#</a> </span> </h4> <p>第一范式：表中字段具有原子性，不可再分</p>