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Outsourcing for five years, abandoned
2022-04-23 12:07:00 【Refugees of the twenty-firstcentury】
If you weren't abandoned by your girlfriend , I guess I haven't awakened yet . Junior college students ,19 In, he entered a software company in Hunan through school recruitment , It's close 5 Year of CRUD, At the beginning of the year , I feel like I can't go on like this , Staying in a comfortable environment for a long time can make a person degenerate ! And I have been working in an enterprise for five years CRUD, It's made me less enterprising , Talked about 2 My girlfriend, who has been living for more than 20 years, broke up with me because of my mentality and salary . therefore , I decided to change the status quo , Look at this year's golden three silver four !
At the beginning of preparation , I've been blinded , Five years CRUD I didn't make any progress in my technology , Only my age has been promoted ...
Can't , I found my brother in Tencent , As his little old watch , After he learned about me ( Almost Java The foundation begins ), Just throw me a net disk , Speaking of :“ Go for it , Here's everything you need , Don't come to me , I think it's embarrassing !”.
There is a complete set in the plate Java Necessary documents for interview PDF, After reading it, I knelt directly to my brother .. Now the interview is stable
Share it for free , Whether it's used to consolidate the foundation , Or in the interview to improve competitiveness, you can collect one , Take a look at it when you have time , Here are some screenshots .
Free download method is attached at the end of the article
( One ). Basics
1、Java Basic skill
- Java introduction ( Basic concepts and common sense )
- Java grammar
- Basic data type
- Method ( function )
2、Java object-oriented
- Classes and objects
- Three characteristics of object orientation
- Modifier
- Interfaces and abstract classes
- Other important knowledge points
3、Java The core technology
- aggregate
- abnormal
- Multithreading
- File with the I\O flow
( Two ). Concurrent
1、 Concurrent container
- JDK Summary of concurrent containers provided
- ConcurrentHashMap
- CopyOnWriteArrayList
- ConcurrentLinkedQueue
- BlockingQueue
- ConcurrentSkipListMap
2、 Thread pool
- The benefits of using thread pools
- Executor frame
- ( important )ThreadPoolExecutor Class introduction
- ( important )ThreadPoolExecutor Examples of use
- Several common thread pools are explained in detail
- ScheduledThreadPoolExecutor Detailed explanation
- Thread pool size determination
3、 Optimistic lock and pessimistic lock
- What is pessimistic lock and optimistic lock
- There are two common ways to implement optimistic locks
- Disadvantages of optimistic lock
- CAS And synchronized The use of
( 3、 ... and ). JVM
1、Java Memory area
- summary
- Run time data area
- HotSpot Exploring virtual machine objects
- Key supplementary content
2、JVM Garbage collection
- uncover JVM The mystery of memory allocation and recovery
- The object has died ?
- Garbage collection algorithm
- Garbage collector
3、JDK Monitoring and troubleshooting tools
- JDK Command line tools
- JDK Visual analysis tools
( Four ) The Internet 、linux、 Data structure and algorithm 、 database 、 The system design 、 Must know tool 、 Interview guide
Because the space is limited , Other contents will not be shown one by one , This advanced note has a total of 512 page . It should be very helpful for small partners who want to advance , I hope it can help you .
You can click on the business card below for free .
版权声明
本文为[Refugees of the twenty-firstcentury]所创,转载请带上原文链接,感谢
https://yzsam.com/2022/04/202204231155178792.html
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