业精于勤，荒于嬉；行成于思，毁于随。方今圣贤相逢，治具毕张。拔去凶邪，登崇畯良。 占小善者率以录，名一艺者无不庸。
爬罗剔抉，刮垢磨光。 盖有幸而获选，孰云多而不扬？ 诸生业患不能精，无患有司之不明；行患不能成，无患有司之不公。
This is a note-taking exercise class project for Basic Java learning, updating from the most basic parts of Java.First the basic Java content, gradually updated the front end, framework, exercise items, and so on.
这是一个Java基础学习的笔记练习类的项目,从java最基础的部分开始更新内容。先是Java的基础内容，逐渐更新出前端，框架，练习项目等内容。
Inside this folder are some basic Java syntax, including constants, variables, arrays, and so on.
在此文件夹内存在的是java的一些基本的语法,包括常量,变量,数组等最基础的内容.
DayXX file stores the contents of the object since it faces the object, and the corresponding notes are stored in the Note folder. DayXX is one-to-one, you can first query the note file in the Note file to find the corresponding source code file content.
dayXX文件存放的是自从面对对象以后的内容,其内容对应的笔记存在于note文件夹内,dayXX是一一对应的,可以先查询note笔记文件的中的笔记文件,在找对应的源代码文件内容.
The knowledge of this day is mainly about the knowledge of the object-oriented section.
这一天的知识主要是包含面向对象部分的知识.还有封住,构造方法,JavaBeen等内容。
- Object orientation 面向对象
- The benefits 好处
- Classes and objects 类与对象
- Definition and use of classes 类的定义和使用
- Difference between local variables and member variables 局部变量和成员变量的区别
- Defined location 定义的位置
- Scope of use 使用范围
- Memory location 内存位置
- The initial value 初始值
- Life cycle 生命周期
- Private keyword private关键字
- This keyword this关键字
- Construction method 构造方法
- JavaBeen
The main focus of the day is the use of String and StringBuilder.
这一天的主要内容就是String和StringBuilder的使用。
- String
- Construction method 构造方法
- Judgment method 判断方法
- Access method 获取方法
- Conversion method 转换方法
- Segmentation method 分割方法
- StringBuilder
- Construction method 构造方法
- Common methods 常见方法
- Conversion between StringBuilder and String StringBuilder和String的相互转换
This day's knowledge is mainly about the contents related to List.
这一天的知识主要是与List有关的内容。
- ArrayList collection ArrayList集合
- The difference between collections and arrays 集合和数组的区别
- Construction method 构造方法
- Other methods 其他方法
- The collection holds data of the base type 集合保存基本类型的数据
This day's content is primarily about the inheritance part.
这一天的内容主要是关于继承部分的内容。
- Anonymous objects 匿名对象
- inheritance 继承
- Construction method 构造方法
- Surper
- This
- An abstract class 抽象类
- Method of use 使用方法
- Matters needing attention 注意事项
- Template design pattern 模板设计模式
- final 关键字
This day is mainly about inheritance and implementation.
这一天的内容主要还是继承实现的内容。
- static
- interface 接口
- Abstract method 抽象方法
- Default method 默认方法
- Static method 静态方法
- polymorphism 多态
- instanceof
- The inner class 内部类
- Permission modifier 权限修饰符
- The code block 代码块
- Construction code block 构造代码块
- Static code block 静态代码块
- Object类
- toString
- Equals
- Objects
- native本地方法
- Date类
- getTime
- setTime
- DateFormat
- Calendar类
- get
- set
- add
- Math
- System
- BigInteger
- BigDecimal
- Arrays
- A wrapper class 包装类
- Automatic packing and unpacking 自动装箱拆箱
- String conversion 字符串转换
- collection 集合
- iterator 迭代器
- Strengthening for 增强for【重点】
- generic 泛型
- a generic class 泛型类
- Generic methods 泛型方法
- Generic interface 泛型接口
- Generic wildcards 泛型通配符
- Introduction to data structure 数据结构简介
- List interface List接口
- ArrayList
- LinkedList
- Set small exercises 集合小练习
- Collections
- shuffle
- sort natural sort sort自然排序
- comparator sort 比较器排序
- Variable parameter 可变参数[重]
- addall method addall方法
- the Set interface Set接口
- hashCode
- hash table 哈希表
- other sets 其他集合
- Map set (double column set) map集合(双列集合)
- keySet()
- entrySet()
- Plus bubble sort 冒泡排序
- selection sort 选择排序
- Binary search 二分查找
- Exception handling 异常处理
- throw、throws
- Objects
- try...catch...finally
- Multithreading foundation 多线程基础
- Processes and threads 进程与线程
- Concurrency and parallelism 并发与并行
- methods in threads 线程里的方法
- Two ways to achieve multithreading 多线程的两种实现方法
- high concurrency 高并发
- Thread safety 线程安全
- visibility 可见性
- order 有序性
- atomic 原子性
- volatile关键字
- Resolve visibility 解决可见性
- Solve order 解决有序性
- Atomic classes 原子类
- CAS[Optimistic lock] CAS[乐观锁]
- synchronized
- Synchronization block [Pessimistic lock] 同步代码块[悲观锁]
- Synchronized methods 同步方法
- And contract 并发包
- CopyOnWriteArrayList
- CopyOnWriteArraySet
- Hashtable
- CountDownLatch
- CyclicBarrier
- Semaphore
- Exchanger
- The thread pool 线程池
- Executor
- ExecutorService
- Executors
- a deadlock 死锁
- the state of the thread 线程的状态
- wait () to wait wait()等待
- notify()唤醒
- Timer Timer 定时器Timer
- Lambda expression Lambda表达式
- Stream
- A single-column collection gets the stream 单列集合获取流
- The two-column collection gets the stream 双列集合获取流
- forEach
- filter
- Count
- Linit
- skip
- concat
- Map
- Collect arrays, collections 收集到数组、集合
- file class file类
- acquisition method 获取方法
- Judgment method 判断方法
- create method 创建方法
- delete method 删除方法
- recursion 递归
- byte stream 字节流
- input stream 输入流
- the output stream 输出流
- character stream 字符流
- input stream 输入流
- the output stream 输出流
- IO resource processing IO资源的处理
- Properties class Properties类
- ResourceBundle
- buffer flow 缓冲流
- Byte buffer stream 字节缓冲流
- Byte input buffered stream 字节输入缓冲流
- Byte output buffered stream 字节输出缓冲流
- character buffer stream 字符缓冲流
- character input buffered stream 字符输入缓冲流
- character output buffered stream 字符输出缓冲流
- Byte buffer stream 字节缓冲流
- transformation flows 转换流
This day is mainly to practice unit testing content, as well as network programming content.
这一天主要是练习单元测试的内容,以及网络编程的内容。
- JUnit unit tests JUnit单元测试
- Network programming 网络编程
- IP: The unique identity of a device in a network. IP：在网络中对于设备的唯一标识。
- 端口：在计算机中对应应用程序的唯一标识。
- Port: The unique identity of the corresponding application on the computer. TCP protocol code TCP协议代码：
- Socket：(Presentation client)表示客户端
- ServerSocket：(Presentation server)表示服务器。
Today, we're talking about some of the parts of the nioo and aio section, and we're going to do a lot of what that does.
今天主要讲述了NIO,AIO部分的一些内容,大体了解了这些有什么作用.
- NIO
- Synchronous and asynchronous 同步和异步
- Blocking and non-blocking 阻塞和非阻塞
- BUffer
- allocate
- allocateDirect
- wrap
- put
- limit
- mark
- position
- flip
- clear
- Channel
- FileChannel
- SocketChannel
- ServerSocketChannel
- Selector
- AIO
Today's lesson is about reflection, getting Class objects, getting constructors, getting member variables, and so on.You also learned about dynamic proxies, which require you to understand the methods of dynamic proxies.
今日内容主要是学习反射,学会获取Class对象,获取构造方法,获取成员变量等内容。还学习了关于动态代理的内容,要求可以看懂动态代理的方法.
-
reflection 反射
-
loader 加载器
-
Class loading mechanism 类加载机制
-
class object acquisition class对象获取
-
Common methods 常用方法
-
Gets the constructor by reflection 通过反射获取构造方法
-
Gets the member method by returning 通过返回获取成员方法
-
-
annotation 注解
-
Target
-
Retention
-
Dynamic agent 动态代理
Today, I mainly learned the content of XML description document, mainly including format, specification, parsing and so on.
今日主要学习了关于xml说明文档部分的内容,主要包括格式,规范,解析等内容.
-
XML
-
XML constraint xml约束
-
DTD
-
schema
-
-
XML parsing xml解析
-
NEW features of JDK8 JDK8的新特性
-
Method reference 方法的引用
-
Base64
-
Today's content focuses on regular expressions, enumeration types, and so on.
今天的内容主要式正则表达式,枚举类型等内容.
- single column mode 单列模式
- LanHanShi 懒汉式
- the hungry 饿汉式
- Multi-case pattern 多例模式
- enumeration 枚举
- Factory mode 工厂模式
- regular expression 正则表达式
React
Typescript
Django
Laravel
Facebook
Microsoft
Google
Alibaba
D3
Tencent