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87彩票面试java

java分布式开发面试题

梳理知识后，夯实基础乃是刚需：深入进阶学习（28个主流Java知识点“一网打尽”）1、并发编程Java并发编程是整个Java开发体系中最难以理解，但也是最重要的知识点之一，一旦掌握你一定在市场上供不应求

spring面试题·2024-09-07 02:38

Java面试题

Java面试题文章目录1、抽象类和接口的区别2、重载和重写的区别3、==和equals的区别4、讲一讲什么是map、set、list5、HashMap原理6、什么是JSP？

路飞Fly了·2024-09-07 02:08

常见面试2

目录1.AQS全称和组成部分有哪些?它的基本原理是什么?2.类加载器的分类有哪些?并解释什么是双亲委派机制(一定要描述如何违背双亲委派和典型实现)3.如何判断一个对象为垃圾对象?哪些对象可以作为GCRoot集合中对象?4.垃圾回收算法有哪些?(包含各自优缺点)1.AQS全称和组成部分有哪些?它的基本原理是什么?AbstractQueueSynchronizer抽象队列同步器组成FIFO阻塞队列，i

LongProgrammer·2024-09-07 02:08

Java Virtual Machine One

jvm结构类加载子系统：类加载器验证准备解析数据运行时数据区：1.方法区类信息方法信息常量池2.堆体系:线程共享区域堆存放new的对象3.栈线程私有的存放线程执行过程的方法信息（存储单位为栈帧）4.程序计时器执行线程的行号计时器5.本地方法栈native方法栈执行引擎：将二进制的指令解释给操作系统栈虚拟栈:存储每个线程的栈结构，线程私有，栈中存储的元素是栈帧每个栈帧存储一个线程的方法信息，方法内部

LongProgrammer·2024-09-07 02:07

基于JAVA智能推荐二手车交易网站计算机毕业设计源码+系统+数据库+lw文档+部署

基于JAVA智能推荐二手车交易网站计算机毕业设计源码+系统+数据库+lw文档+部署基于JAVA智能推荐二手车交易网站计算机毕业设计源码+系统+数据库+lw文档+部署本源码技术栈：项目架构：B/S架构开发语言

光光网络·2024-09-07 02:07

常见面试3

目录1.是否做过jvm的调优2.Springboot自动装配原理是什么?3.Springboot常用注解有哪些1.是否做过jvm的调优jvm参数之前在工作的时候偶尔做过，每次都是需要的时候去查询文档一般情况下都是使用默认值，只有真正需要调优会去重新设置默认值主要jvm参数分为三种标准参数：主要用于查看一些基本命令值比如的话jvm版本号x参数用于设置内存大小基本都是传给jvm的，默认jvm实现这些参

LongProgrammer·2024-09-07 02:36

html如何嵌套页面？标签告诉你答案</h4> </div> <div class="article-excerpt"> web前端全栈资料粉丝福利（<em>面试</em>题、视频、资料笔记、进阶路线）在这里小编首先介绍的是HTML中iframe标签的用法：怎么在一个网页中嵌入另一个网页呢，我们可以用html中的iframe标签搞定 </div> </a> <div class="newsitem-meta"> <span class=" votes-operation"> <span class="wrap"> <i class="glyphicon glyphicon-thumbs-up hot"></i> </span> <span class="author pr20"> PHP9年架构师<span class="dot">·</span>2024-09-07 02:06 </span> </span> <ul class="taglist--inline inline-block articletitle--tag"> </ul> </div> </div> </div> <div class="news-item streamitem clearfix mt15"> <div class="newsitem-info clearfix"> <a href="/article/1832117076580462592.htm" ></a> <a target="_blank" href="/article/1832117076580462592.htm"> <div class="mb5 mt5"> <h4 class="news__item-title mt0">docker启动es内存不够问题</h4> </div> <div class="article-excerpt"> docker启动es内存不够问题在启动的时候加上-eES_<em>JAVA</em>_OPTS=“-Xms=256m-Xmx=256m”参数，给es分配256m的内存大小dockerrun-d-p9200:9200-p9300 </div> </a> <div class="newsitem-meta"> <span class=" votes-operation"> <span class="wrap"> <i class="glyphicon glyphicon-thumbs-up hot"></i> </span> <span class="author pr20"> 想飞的rat<span class="dot">·</span>2024-09-07 02:05 </span> </span> <ul class="taglist--inline inline-block articletitle--tag"> <li class="tagPopup mb5"> <a class="tag" href="/search/docker/1.htm"> docker </a> </li> <li class="tagPopup mb5"> <a class="tag" href="/search/elasticsearch/1.htm"> elasticsearch </a> </li> <li class="tagPopup mb5"> <a class="tag" href="/search/java/1.htm"> java </a> </li> </ul> </div> </div> </div> <div class="news-item streamitem clearfix mt15"> <div class="newsitem-info clearfix"> <a href="/article/1832115942453243904.htm" class='news-img' style="background-image:url('http://img.e-com-net.com/image/info8/78a2d58ce58445b58c7a1099ff434f6c.jpg@!80x60')" ></a> <a target="_blank" href="/article/1832115942453243904.htm"> <div class="mb5 mt5"> <h4 class="news__item-title mt0"><em>java</em>运行时内存数据区_运行时数据区域（<em>Java</em>内存结构）</h4> </div> <div class="article-excerpt"> <em>Java</em>虚拟机在执行<em>Java</em>程序的过程中会把它所管理的内存划分为若干个不同的数据区域。 </div> </a> <div class="news__item-meta"> <span class=" votes-operation"> <span class="wrap"> <i class="glyphicon glyphicon-thumbs-up hot"></i> </span> <span class="author pr20"> weixin_39724362<span class="dot">·</span>2024-09-07 01:34 </span> </span> <ul class="taglist--inline inline-block articletitle--tag"> <li class="tagPopup mb5"> <a class="tag" href="/search/java%E8%BF%90%E8%A1%8C%E6%97%B6%E5%86%85%E5%AD%98%E6%95%B0%E6%8D%AE%E5%8C%BA/1.htm"> java运行时内存数据区 </a> </li> </ul> </div> </div> </div> <div class="news-item streamitem clearfix mt15"> <div class="news__item-info clearfix"> <a href="/article/1832115311013359616.htm" class='news-img' style="background-image:url('http://img.e-com-net.com/image/info8/dca372153d074cf3831bc5ddf90f79d1.png@!80x60')" ></a> <a target="_blank" href="/article/1832115311013359616.htm"> <div class="mb5 mt5"> <h4 class="news__item-title mt0"><em>java</em> 内存划分_<em>Java</em>运行时内存划分</h4> </div> <div class="article-excerpt"> 如果程序执行的是一个<em>Java</em>方法，则计数器记录的是正在执行的 </div> </a> <div class="newsitem-meta"> <span class=" votes-operation"> <span class="wrap"> <i class="glyphicon glyphicon-thumbs-up hot"></i> </span> <span class="author pr20"> 幸福的小酒瓶<span class="dot">·</span>2024-09-07 01:04 </span> </span> <ul class="taglist--inline inline-block articletitle--tag"> <li class="tagPopup mb5"> <a class="tag" href="/search/java/1.htm"> java </a> </li> <li class="tagPopup mb5"> <a class="tag" href="/search/%E5%86%85%E5%AD%98%E5%88%92%E5%88%86/1.htm"> 内存划分 </a> </li> </ul> </div> </div> </div> <div class="news-item streamitem clearfix mt15"> <div class="newsitem-info clearfix"> <a href="/article/1832114301469552640.htm" ></a> <a target="_blank" href="/article/1832114301469552640.htm"> <div class="mb5 mt5"> <h4 class="news__item-title mt0"><em>java</em> 运行内存_<em>Java</em>运行时内存区域</h4> </div> <div class="article-excerpt"> 一.运行时数据区域<em>Java</em>虚拟机在执行<em>Java</em>程序的过程中会把它所管理的内存划分为几个不同的数据区域，这些区域都有各自的用途，以及创建和销毁的时间，有的区域随着虚拟机进程的启动而存在，有的区域则依赖用户线程的启动和结束而建立和销毁 </div> </a> <div class="newsitem-meta"> <span class=" votes-operation"> <span class="wrap"> <i class="glyphicon glyphicon-thumbs-up hot"></i> </span> <span class="author pr20"> wb0r0r<span class="dot">·</span>2024-09-07 01:03 </span> </span> <ul class="taglist--inline inline-block articletitle--tag"> <li class="tagPopup mb5"> <a class="tag" href="/search/java/1.htm"> java </a> </li> <li class="tagPopup mb5"> <a class="tag" href="/search/%E8%BF%90%E8%A1%8C%E5%86%85%E5%AD%98/1.htm"> 运行内存 </a> </li> </ul> </div> </div> </div> <div class="news-item streamitem clearfix mt15"> <div class="newsitem-info clearfix"> <a href="/article/1832110520895893504.htm" ></a> <a target="_blank" href="/article/1832110520895893504.htm"> <div class="mb5 mt5"> <h4 class="newsitem-title mt0"><em>java</em>运行时内存</h4> </div> <div class="article-excerpt"> <em>java</em>运行时内存分为“线程共享”和“线程私有”两部分共享的资源有：a.堆由于堆是在进程空间中开辟出来的，所以它是理所当然地被共享的；因此new出来的都是共享的（16位平台上分全局堆和局部堆，局部堆是独享的 </div> </a> <div class="newsitem-meta"> <span class=" votes-operation"> <span class="wrap"> <i class="glyphicon glyphicon-thumbs-up hot"></i> </span> <span class="author pr20"> 时闻折竹声<span class="dot">·</span>2024-09-07 01:02 </span> </span> <ul class="taglist--inline inline-block articletitle--tag"> <li class="tagPopup mb5"> <a class="tag" href="/search/%E5%A4%9A%E7%BA%BF%E7%A8%8B/1.htm"> 多线程 </a> </li> </ul> </div> </div> </div> <div class="news-item streamitem clearfix mt15"> <div class="news__item-info clearfix"> <a href="/article/1832108378466381824.htm" class='news-img' style="background-image:url('http://img.e-com-net.com/image/info8/e96e3199e0a3445dae06f15414a42f9e.jpg@!80x60')" ></a> <a target="_blank" href="/article/1832108378466381824.htm"> <div class="mb5 mt5"> <h4 class="news__item-title mt0">cannot import name ‘goods_dp‘ from partially initialized module ‘goods‘ (most likely due to a circul</h4> </div> <div class="article-excerpt"> mostlikelyduetoacircularimport)大致就是不能从部分初始化的模块goods中导入名goods_dp蓝图(大概率是由于循环导入/依赖)练flask框架出的问题代码大致是这样:写<em>java</em> </div> </a> <div class="newsitem-meta"> <span class=" votes-operation"> <span class="wrap"> <i class="glyphicon glyphicon-thumbs-up hot"></i> </span> <span class="author pr20"> pepper5<span class="dot">·</span>2024-09-07 01:31 </span> </span> <ul class="taglist--inline inline-block articletitle--tag"> <li class="tagPopup mb5"> <a class="tag" href="/search/Python%E9%97%AE%E9%A2%98/1.htm"> Python问题 </a> </li> </ul> </div> </div> </div> <div class="news-item streamitem clearfix mt15"> <div class="newsitem-info clearfix"> <a href="/article/1832105606878687232.htm" ></a> <a target="_blank" href="/article/1832105606878687232.htm"> <div class="mb5 mt5"> <h4 class="news__item-title mt0">docker 启动Elasticsearch镜像指令</h4> </div> <div class="article-excerpt"> dockerrun-d-eES_<em>JAVA</em>_POTS="-Xms256m-Xmx256m"-e"discovery.type=single-node"-p9200:9200-p9300:9300--nameES3502bab3f5e7d </div> </a> <div class="newsitem-meta"> <span class=" votes-operation"> <span class="wrap"> <i class="glyphicon glyphicon-thumbs-up hot"></i> </span> <span class="author pr20"> 免费的东西<span class="dot">·</span>2024-09-07 01:30 </span> </span> <ul class="taglist--inline inline-block articletitle--tag"> <li class="tagPopup mb5"> <a class="tag" href="/search/java/1.htm"> java </a> </li> <li class="tagPopup mb5"> <a class="tag" href="/search/docker/1.htm"> docker </a> </li> <li class="tagPopup mb5"> <a class="tag" href="/search/elasticsearch/1.htm"> elasticsearch </a> </li> <li class="tagPopup mb5"> <a class="tag" href="/search/java/1.htm"> java </a> </li> <li class="tagPopup mb5"> <a class="tag" href="/search/tcp%2Fip/1.htm"> tcp/ip </a> </li> <li class="tagPopup mb5"> <a class="tag" href="/search/%E6%90%9C%E7%B4%A2%E5%BC%95%E6%93%8E/1.htm"> 搜索引擎 </a> </li> </ul> </div> </div> </div> <div class="news-item streamitem clearfix mt15"> <div class="newsitem-info clearfix"> <a href="/article/1832103084696891392.htm" class='news-img' style="background-image:url('http://img.e-com-net.com/image/info8/7716e91eebcc4dc6ab44a2346a038bee.jpg@!80x60')" ></a> <a target="_blank" href="/article/1832103084696891392.htm"> <div class="mb5 mt5"> <h4 class="newsitem-title mt0"><em>java</em>之运行时内存</h4> </div> <div class="article-excerpt"> 1.概念：一个<em>java</em>程序从编译到执行，大概经历过4个步骤，编译成字节码，用类的加载器进行加载，分配内存，引擎执行，而内存的如何分配，是我们平时对程序进行调优的主要对象。 </div> </a> <div class="newsitem-meta"> <span class=" votes-operation"> <span class="wrap"> <i class="glyphicon glyphicon-thumbs-up hot"></i> </span> <span class="author pr20"> 天天爆零<span class="dot">·</span>2024-09-07 01:29 </span> </span> <ul class="taglist--inline inline-block articletitle--tag"> <li class="tagPopup mb5"> <a class="tag" href="/search/java/1.htm"> java </a> </li> </ul> </div> </div> </div> <div class="news-item streamitem clearfix mt15"> <div class="news__item-info clearfix"> <a href="/article/1832102704772640768.htm" ></a> <a target="_blank" href="/article/1832102704772640768.htm"> <div class="mb5 mt5"> <h4 class="news__item-title mt0">docker 启动 ElasticSearch</h4> </div> <div class="article-excerpt"> dockerrun--nameelasticsearch-p9200:9200-p9300:9300-e"discovery.type=single-node"-eES_<em>JAVA</em>_OPTS="-Xms64m-Xmx128m </div> </a> <div class="news__item-meta"> <span class=" votes-operation"> <span class="wrap"> <i class="glyphicon glyphicon-thumbs-up hot"></i> </span> <span class="author pr20"> 终是庄周梦了蝶_G<span class="dot">·</span>2024-09-07 01:58 </span> </span> <ul class="taglist--inline inline-block articletitle--tag"> <li class="tagPopup mb5"> <a class="tag" href="/search/%E7%AC%94%E8%AE%B0/1.htm"> 笔记 </a> </li> <li class="tagPopup mb5"> <a class="tag" href="/search/linux/1.htm"> linux </a> </li> <li class="tagPopup mb5"> <a class="tag" href="/search/docker/1.htm"> docker </a> </li> <li class="tagPopup mb5"> <a class="tag" href="/search/elasticsearch/1.htm"> elasticsearch </a> </li> </ul> </div> </div> </div> <div class="news-item streamitem clearfix mt15"> <div class="news__item-info clearfix"> <a href="/article/1832102200445333504.htm" ></a> <a target="_blank" href="/article/1832102200445333504.htm"> <div class="mb5 mt5"> <h4 class="newsitem-title mt0">13 jdk1.5.0的新特性</h4> </div> <div class="article-excerpt"> ----------------------android培训、<em>java</em>培训、期待与您交流！ </div> </a> <div class="newsitem-meta"> <span class=" votes-operation"> <span class="wrap"> <i class="glyphicon glyphicon-thumbs-up hot"></i> </span> <span class="author pr20"> collman<span class="dot">·</span>2024-09-07 01:58 </span> </span> <ul class="taglist--inline inline-block articletitle--tag"> <li class="tagPopup mb5"> <a class="tag" href="/search/Java%E5%9F%BA%E7%A1%80/1.htm"> Java基础 </a> </li> <li class="tagPopup mb5"> <a class="tag" href="/search/jdk/1.htm"> jdk </a> </li> <li class="tagPopup mb5"> <a class="tag" href="/search/%E8%AE%BE%E8%AE%A1%E6%A8%A1%E5%BC%8F/1.htm"> 设计模式 </a> </li> <li class="tagPopup mb5"> <a class="tag" href="/search/android/1.htm"> android </a> </li> <li class="tagPopup mb5"> <a class="tag" href="/search/string/1.htm"> string </a> </li> <li class="tagPopup mb5"> <a class="tag" href="/search/interface/1.htm"> interface </a> </li> <li class="tagPopup mb5"> <a class="tag" href="/search/java/1.htm"> java </a> </li> </ul> </div> </div> </div> <div class="news-item streamitem clearfix mt15"> <div class="news__item-info clearfix"> <a href="/article/1832101442568155136.htm" class='news-img' style="background-image:url('http://img.e-com-net.com/image/info8/556e0d8cb51a4d999e99ead0720db9c0.jpg@!80x60')" ></a> <a target="_blank" href="/article/1832101442568155136.htm"> <div class="mb5 mt5"> <h4 class="newsitem-title mt0"><em>Java</em>运行时内存区域</h4> </div> <div class="article-excerpt"> <em>Java</em>虚拟机（<em>Java</em>SE7版）管理的内存包括以下几个运行时数据区域。1.程序计数器程序计数器（ProgramCounterRegister）是当前线程所执行的字节码的行号指示器。 </div> </a> <div class="newsitem-meta"> <span class=" votes-operation"> <span class="wrap"> <i class="glyphicon glyphicon-thumbs-up hot"></i> </span> <span class="author pr20"> benlocke<span class="dot">·</span>2024-09-07 00:57 </span> </span> <ul class="taglist--inline inline-block articletitle--tag"> <li class="tagPopup mb5"> <a class="tag" href="/search/Java/1.htm"> Java </a> </li> <li class="tagPopup mb5"> <a class="tag" href="/search/java/1.htm"> java </a> </li> <li class="tagPopup mb5"> <a class="tag" href="/search/jvm/1.htm"> jvm </a> </li> <li class="tagPopup mb5"> <a class="tag" href="/search/heap/1.htm"> heap </a> </li> <li class="tagPopup mb5"> <a class="tag" href="/search/stack/1.htm"> stack </a> </li> <li class="tagPopup mb5"> <a class="tag" href="/search/%E5%86%85%E5%AD%98/1.htm"> 内存 </a> </li> </ul> </div> </div> </div> <div class="news-item streamitem clearfix mt15"> <div class="news__item-info clearfix"> <a href="/article/1832097811273969664.htm" ></a> <a target="_blank" href="/article/1832097811273969664.htm"> <div class="mb5 mt5"> <h4 class="newsitem-title mt0"><em>Java</em>Bean</h4> </div> <div class="article-excerpt"> <em>java</em>Bean就是一个普通的<em>java</em>类，但必须满足以下条件才能够称为是<em>Java</em>Bean：1）必须提供无参的构造方法；2）类中属性必须私有化；3）该类提供公共的getter和setter方法。 </div> </a> <div class="newsitem-meta"> <span class=" votes-operation"> <span class="wrap"> <i class="glyphicon glyphicon-thumbs-up hot"></i> </span> <span class="author pr20"> 我是邱邱<span class="dot">·</span>2024-09-07 00:32 </span> </span> <ul class="taglist--inline inline-block articletitle--tag"> </ul> </div> </div> </div> <div class="news-item streamitem clearfix mt15"> <div class="news__item-info clearfix"> <a href="/article/1832095643745742848.htm" class='news-img' style="background-image:url('http://img.e-com-net.com/image/info8/f6d0b185a80042118daa6c2e5479552d.jpg@!80x60')" ></a> <a 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