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CyC2018 2018-02-23 18:10:07 +08:00
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4
notes/HTTP.md
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@ -10,7 +10,7 @@
* [PUT：上传文件](#put上传文件) * [PUT：上传文件](#put上传文件)
* [DELETE：删除文件](#delete删除文件) * [DELETE：删除文件](#delete删除文件)
* [OPTIONS：查询支持的方法](#options查询支持的方法) * [OPTIONS：查询支持的方法](#options查询支持的方法)
* [RACE：追踪路径](#race追踪路径) * [TRACE：追踪路径](#trace追踪路径)
* [CONNECT：要求用隧道协议连接代理](#connect要求用隧道协议连接代理) * [CONNECT：要求用隧道协议连接代理](#connect要求用隧道协议连接代理)
* [HTTP 状态码](#http-状态码) * [HTTP 状态码](#http-状态码)
* [2XX 成功](#2xx-成功) * [2XX 成功](#2xx-成功)
@ -110,7 +110,7 @@ GET
会返回 Allow: GET, POST, HEAD, OPTIONS 这样的内容。 会返回 Allow: GET, POST, HEAD, OPTIONS 这样的内容。
## RACE：追踪路径 ## TRACE：追踪路径
服务器会将通信路径返回给客户端。 服务器会将通信路径返回给客户端。

54
notes/Java 基础语法.md
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@ -9,7 +9,7 @@
* [Map](#map) * [Map](#map)
* [????](#????) * [????](#????)
* [??](#??) * [??](#??)
* [?¦Ï?????](#?¦Ï?????) * [????????](#????????)
<!-- GFM-TOC --> <!-- GFM-TOC -->
# ???? # ????
@ -20,27 +20,27 @@
?????????????????????????????????????????????????????????????????? ??????????????????????????????????????????????????????????????????
????????????final ???????????????????final ????¨°????????????????????????????????????????????? ????????????final ???????????????????final ???????????????????????????????????????????????????
**final ????** **final ????**
???????????????????? ????????????????????
private ?????????????? final????????????§Ø?????????????§Ö???? private ???????????????????????????????????????????????? private ?????????????? final????????????????????????????????? private ????????????????????????????????????????????????
**final ??** **final ??**
????????????§³? ???????????????
## ???????? ## ????????
static ??????????????????????????????????????????????????¦²?????????????????????? static ??????????????????????????????????????????????????????????????????????????
```java ```java
public static String staticField = "???????"; public static String staticField = "???????";
``` ```
static ????? static ???????????????????????????¦²?????????????????????????????§Ö???? static ????? static ????????????????????????????????????????????????????????????????
```java ```java
static { static {
@ -60,7 +60,7 @@ public String field = "????";
} }
``` ```
????????????§Ö???????§Ô???? ???????????????????????????
```java ```java
public InitialOrderTest() public InitialOrderTest()
@ -69,22 +69,22 @@ public InitialOrderTest()
} }
``` ```
?????§Ö?????????????????? ?????????????????????????
1. ??????????????????ï‚ 1. ???????????????????
2. ??????????????????ï‚ 2. ???????????????????
3. ????????????ï‚ 3. ?????????????
4. ???????????? 4. ????????????
5. ????????????ï‚ 5. ?????????????
6. ???????????? 6. ????????????
## ??????? ## ???????
Java ??????????????????¦Ç???private??protected ??? public???????????????¦Ç??????????????? Java ???????????????????????private??protected ??? public????????????????????????????????
???????????§Ö???????????????????????????¦Ç??????????????????????¨®?????????????????¨®????????????????????????????????????????????§Ö?????????????????????????????????? ?????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????
protected ???????¦Ã???????????????§Ô????????????????????????????¦Ç?????????????ÈÉ???????§Þ??????? protected ???????????????????????????????????????????????????????????????????????????????????????
# ???? # ????
@ -96,13 +96,13 @@ protected ???????
- HashSet????? Hash ??????????????????????????? - HashSet????? Hash ???????????????????????????
- TreeSet?????????????????????????§¹????? HashSet?? - TreeSet???????????????????????????????? HashSet??
- LinkedListHashSet?????? HashSet ?????§¹????????????????????????????????????????? - LinkedListHashSet?????? HashSet ????????????????????????????????????????????????
## Queue ## Queue
???????????LinkedList ?? PriorityQueue?????? LinkedList ????????§³? ???????????LinkedList ?? PriorityQueue?????? LinkedList ???????????
## Map ## Map
@ -112,29 +112,29 @@ protected ???????
- TreeMap????????????? - TreeMap?????????????
- ConcurrentHashMap??????? Map?????<EFBFBD>p??????? - ConcurrentHashMap??????? Map??????p???????
# ???? # ????
?????????? **Class** ??????????????§Û???????????????????????????????????? .class ??????????????????? Class ???? ?????????? **Class** ???????????????????????????????????????????????????? .class ??????????????????? Class ????
????????? Class ?????????????????????????????? JVM ?§µ???????? Class.forName('com.mysql.jdbc.Driver.class') ????????????????????¡Â?????????? Class ???? ????????? Class ?????????????????????????????? JVM ??????????? Class.forName('com.mysql.jdbc.Driver.class') ???????????????????????????????? Class ????
???????????????????????????????????????????????????????????????????? .class ??????????????????? ???????????????????????????????????????????????????????????????????? .class ???????????????????
Class ?? java.lang.reflect ???????????????java.lang.reflect ???????? **Field**??**Method** ??? **Constructor** ????????? get() ?? set() ???????????? Field ???????????¦²???????? invoke() ?????????? Method ???????????????????? Constructor ?????????? Class ?? java.lang.reflect ???????????????java.lang.reflect ???????? **Field**??**Method** ??? **Constructor** ????????? get() ?? set() ???????????? Field ????????????????????? invoke() ?????????? Method ???????????????????? Constructor ??????????
IDE ??¡Â???????????????????????????????????????????¦±??????????????????§Ô??????????? IDE ????????????????????????????????????????????????????????????????????????????????
# ?? # ??
Throwable ????????????¦Ê¦Ï???????????????????????**Error** ?? **Exception**?????? Error ?????????????????? Throwable ??????????????????????????????????????**Error** ?? **Exception**?????? Error ??????????????????
Exception ????????**?????** ?? **???????**???????????? try...catch... ???????§Õ??????????????§Ý?????????????????????????????? 0 ?????? Arithmetic Exception??????????????????????? Exception ????????**?????** ?? **???????**???????????? try...catch... ??????????????????????????????????????????????????????? 0 ?????? Arithmetic Exception???????????????????????
![](https://github.com/CyC2018/InterviewNotes/blob/master/pics/48f8f98e-8dfd-450d-8b5b-df4688f0d377.jpg) ![](https://github.com/CyC2018/InterviewNotes/blob/master/pics/48f8f98e-8dfd-450d-8b5b-df4688f0d377.jpg)
# ?¦Ï????? # ????????
- Eckel B, ????? , ??? , ?? . Java ?????? [M]. ??§Ö????????? , 2002. - Eckel B, ????? , ??? , ?? . Java ?????? [M]. ????????????? , 2002.
- [Java ????????? ](https://segmentfault.com/a/1190000004527951) - [Java ????????? ](https://segmentfault.com/a/1190000004527951)