If I hadn't been abandoned by my girlfriend , I guess I'm not awake yet . College Students ,18 In, he entered a software company in Hunan through school recruitment , shoot 3 More than years CRUD, in the beginning of this year , I feel like I can't go on like this , Staying in a comfortable environment for a long time will make a person degenerate ! And I've worked in an enterprise 3 Year CRUD, Has made me less enterprising , Yes 2 My girlfriend broke up with me because of my mentality and salary . therefore , I decided to change the status quo , Look at this year's gold, silver and four !

At the beginning of preparation , I've been blindfolded , Three years CRUD Let my technology not a trace of progress , Only my age has been promoted ...

no way out , I found my brother in Tencent , As his little old watch , After he learned about me ( Almost Java Foundation start ), Just throw me a network disk , Speaking of :“ Go ahead , Here's everything you need , Don't come to me , I'm ashamed !”.

This Java Comprehensive analysis of intermediate and advanced core knowledge , Mainly include Java Basics ,Java container ,Java Concurrent ,Java Virtual machines and Java
IO. It also comes with a network ,linux, Data structure and algorithm , database , system design , Must know tool , Interview guide, etc , Very comprehensive .

This is free sharing ! Some screenshots are shown below , Click the business card at the end of the text , You can get it for free by scanning the code !

( 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-oriented
* Modifier
* Interfaces and abstract classes
* Other important knowledge points

3,Java core technology

* aggregate
* abnormal
* Multithreading
* Documents and I\O flow

( two ). Concurrent

1, Concurrent container

* JDK Summary of concurrent containers provided
* ConcurrentHashMap
* CopyOnWriteArrayList
* ConcurrentLinkedQueue
* BlockingQueue
* ConcurrentSkipListMap

2, Thread pool

* Benefits of using thread pools
* Executor frame
* ( important )ThreadPoolExecutor Class introduction
* ( important )ThreadPoolExecutor Use example
* Detailed explanation of several common thread pools
* ScheduledThreadPoolExecutor Explain in detail
* Thread pool size determination

3, Optimistic lock and pessimistic lock

* What is pessimistic lock and optimistic lock
* Two common implementations of optimistic locks
* Disadvantages of optimistic lock
* CAS And synchronized Usage scenarios for

( three ). JVM

1,Java Memory area

* summary
* Runtime data area
* HotSpot Exploration of virtual machine objects
* Key supplementary contents

2,JVM garbage collection

* open JVM Mysterious veil of memory allocation and recycling
* The object is dead ?
* Garbage collection algorithm
* garbage collector

3,JDK Monitoring and troubleshooting tools

* JDK Command line tools
* JDK Visual analysis tool

( four ) network ,linux, Data structure and algorithm , database , system design , Must know tool , Interview guide

Because the space is limited , Other contents will not be displayed 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, too .

You can click on the business card below for free .