java基础知识体系

太过爱你忘了你带给我的痛 2022-09-03 05:18 223阅读 0赞

说真的,感觉记得太啰嗦了,所以心里有个想法,在"java分栏中",也就是这个大节尽量记一点需要背诵和记忆的知识点,代码以及完全版尽量放在本地的typora上,在这段时间里在csdn上的尽量光记知识点

### 文章目录 ###

*  java基础
 *   *  面向对象
     *  常用api类
     *  集合
     *  多线程
     *  IO
     *  进阶
 *  javaweb
 *   *  mysql
     *  jdbc

# java基础 #

## 面向对象 ##

## 常用api类 ##

<table> 
 <thead> 
  <tr> 
   <th>内容</th> 
   <th align="left">简要</th> 
  </tr> 
 </thead> 
 <tbody> 
  <tr> 
   <td><a href="https://blog.csdn.net/weixin_44797182/article/details/118999257" rel="nofollow">api概述</a></td> 
   <td align="left">api概述<br>jdk包分类</td> 
  </tr> 
  <tr> 
   <td><a href="https://blog.csdn.net/weixin_44797182/article/details/119832483" rel="nofollow">字符串</a></td> 
   <td align="left">String<br>StringSuilder<br>比较-》equals，equalsIgnoreCase</td> 
  </tr> 
  <tr> 
   <td><a href="https://blog.csdn.net/weixin_44797182/article/details/119835005" rel="nofollow">Math</a></td> 
   <td align="left">数学函数方法</td> 
  </tr> 
  <tr> 
   <td><a href="https://blog.csdn.net/weixin_44797182/article/details/119835072" rel="nofollow">System</a></td> 
   <td align="left">exit() =&gt; 终止运行<br>currentTimeMillis() =&gt; 计算程序运行时间<br>gc()=&gt;垃圾回收<br>arraycopy()=&gt;数组扩容</td> 
  </tr> 
  <tr> 
   <td><a href="https://blog.csdn.net/weixin_44797182/article/details/119835711" rel="nofollow">Object和Objects</a></td> 
   <td align="left">对象的比较<br> 判断对象为空=&gt;Objects.isNull(obj);</td> 
  </tr> 
  <tr> 
   <td><a href="https://blog.csdn.net/weixin_44797182/article/details/119836020" rel="nofollow">BigDecimal</a></td> 
   <td align="left">精确计算</td> 
  </tr> 
  <tr> 
   <td><a href="https://blog.csdn.net/weixin_44797182/article/details/119836059" rel="nofollow">包装类</a></td> 
   <td align="left">自动拆箱和自动装箱<br>int和String类型的相互转换</td> 
  </tr> 
  <tr> 
   <td><a href="https://blog.csdn.net/weixin_44797182/article/details/119836195" rel="nofollow">Arrays</a></td> 
   <td align="left">打印数组</td> 
  </tr> 
  <tr> 
   <td><a href="https://blog.csdn.net/weixin_44797182/article/details/119836519" rel="nofollow">时间日期类</a></td> 
   <td align="left">时间格式装换</td> 
  </tr> 
 </tbody> 
</table>

## 集合 ##

<table> 
 <thead> 
  <tr> 
   <th>内容</th> 
   <th align="left">简要</th> 
  </tr> 
 </thead> 
 <tbody> 
  <tr> 
   <td><a href="https://blog.csdn.net/weixin_44797182/article/details/119616261" rel="nofollow">java集合详解</a></td> 
   <td align="left">什么叫多线程<br>并发和并行<br></td> 
  </tr> 
  <tr> 
   <td><a href="https://blog.csdn.net/weixin_44797182/article/details/119832483" rel="nofollow">字符串</a></td> 
   <td align="left">String<br>StringBuilder</td> 
  </tr> 
 </tbody> 
</table>

## 多线程 ##

<table> 
 <thead> 
  <tr> 
   <th>内容</th> 
   <th align="left">简要</th> 
  </tr> 
 </thead> 
 <tbody> 
  <tr> 
   <td><a href="https://blog.csdn.net/weixin_44797182/article/details/119426332" rel="nofollow">线程基础知识</a></td> 
   <td align="left">什么叫多线程<br>并发和并行<br> 进程和线程</td> 
  </tr> 
  <tr> 
   <td><a href="https://blog.csdn.net/weixin_44797182/article/details/119426654" rel="nofollow">线程的实现方式</a></td> 
   <td align="left">1. 继承Thread类<br>2. 实现Runnable接口<br>3.使用Callable和Future创建线程</td> 
  </tr> 
  <tr> 
   <td><a href="https://blog.csdn.net/weixin_44797182/article/details/119427370" rel="nofollow">线程生命周期及状态</a></td> 
   <td align="left">线程的六种状态<br>线程中改变状态的一些方法<br>设置和获取线程名<br>线程优先级<br>线程的停止方式</td> 
  </tr> 
  <tr> 
   <td><a href="https://blog.csdn.net/weixin_44797182/article/details/119488732" rel="nofollow">线程安全</a></td> 
   <td align="left">实现线程安全 =&gt; 线程同步（synchronized)<br>线程同步带来的问题=》线程死锁<br>解决线程死锁=》生产者/消费者</td> 
  </tr> 
  <tr> 
   <td><a href="https://blog.csdn.net/weixin_44797182/article/details/119490209" rel="nofollow">线程池</a></td> 
   <td align="left"></td> 
  </tr> 
 </tbody> 
</table>

## IO ##

<table> 
 <thead> 
  <tr> 
   <th>内容</th> 
   <th align="left">简要</th> 
  </tr> 
 </thead> 
 <tbody> 
  <tr> 
   <td><a href="https://blog.csdn.net/weixin_44797182/article/details/119461864" rel="nofollow">File类</a></td> 
   <td align="left">file类及其方法的基本使用<br>文件的增删改查</td> 
  </tr> 
  <tr> 
   <td><a href="https://blog.csdn.net/weixin_44797182/article/details/119580683" rel="nofollow">IO流</a></td> 
   <td align="left">分类<br>字节流<br>字节缓冲流<br>字符流<br>字符缓冲流<br>转换流<br>对象操作流<br>.IO相关集合-Properties集合</td> 
  </tr> 
  <tr> 
   <td><a href="https://blog.csdn.net/weixin_44797182/article/details/119581197" rel="nofollow">IO流实例</a></td> 
   <td align="left">用几种方式对数据进行操作</td> 
  </tr> 
  <tr> 
   <td><a href="https://blog.csdn.net/weixin_44797182/article/details/119579891" rel="nofollow">IO流总结</a></td> 
   <td align="left">知识体系</td> 
  </tr> 
 </tbody> 
</table>

## 进阶 ##

<table> 
 <thead> 
  <tr> 
   <th>内容</th> 
   <th align="left">简要</th> 
  </tr> 
 </thead> 
 <tbody> 
  <tr> 
   <td><a href="https://blog.csdn.net/weixin_44797182/article/details/119653330" rel="nofollow">类加载器</a></td> 
   <td align="left">类加载的过程<br>双亲委派模型</td> 
  </tr> 
 </tbody> 
</table>

# javaweb #

## mysql ##

## jdbc ##

<table> 
 <thead> 
  <tr> 
   <th>内容</th> 
   <th align="left">简要</th> 
  </tr> 
 </thead> 
 <tbody> 
  <tr> 
   <td><a href="https://blog.csdn.net/weixin_44797182/article/details/119817529" rel="nofollow">mysql</a></td> 
   <td align="left">以下四种分类以及使用<br>DDL(Data Definition Language)数据定义语言<br>DML(Data Manipulation Language)数据操作语言<br>TPL(Transaction Process Language)事务处理语言：用于对事务进行处理；<br>DQL(Data Query Language)数据查询语言<br>DCL(Data Control Language)数据控制语言(了解)<br>常用约束<br>视图基本使用 <br><a href="https://blog.csdn.net/weixin_44797182/article/details/119829858" rel="nofollow">事务</a></td> 
  </tr> 
  <tr> 
   <td><a href="https://blog.csdn.net/weixin_44797182/article/details/119826655" rel="nofollow">jdbc</a></td> 
   <td align="left">java操作数据库的增删改查,<br>初始版本到最终版本工具类的封装使用</td> 
  </tr> 
 </tbody> 
</table>