Let me tell you about my personal situation first, a college student, who entered a software company in Hunan through school recruitment in 2018, and has worked in CRUD for nearly 3 years. At the beginning of this year, I felt that I could not go on like this and stay in a comfortable environment for a long time. Make a person fall! And I have been doing CRUD in a company for three years, which has made me not enterprising, and my girlfriend who I talked to for 2 years broke up with me because of my mentality and salary. So, I decided to change the status quo and focus on this year's gold nine silver ten!
When I first started preparing, I was blinded. 3 years of CRUD did not make any progress in my technology, only my age improved...
No way, I found my old brother at Tencent, as his little old watch, after he learned about my situation (almost the beginning of Java basics), he threw me a study note and said: "Go ahead. , here's everything you need, don't come to me, I'm ashamed!".
Let's take a look at how awesome this note is! (At first, I thought he was bragging, but after learning, he directly kneeled to my brother...)
The first part of solid Java foundation (Java foundation + container + concurrency + JVM)
The second part of network knowledge (computer network technology + TLS in HTTPS)
Part 3 Linux
Part IV Data Structures and Algorithms
The fifth part database (MySQL+Redis)
Part VI System Design (RestFul API + Common Framework + Authentication and Authorization + Distributed + Large Website Architecture + Microservices)
The seventh part must be tools (Git+Docker)
Part 8 Interview Guide (How to Write a Resume + How to Prepare for an Interview + My Study Method)
Since the entire note is relatively comprehensive and contains a lot of content, only some screenshots of the information are shown here.
This time it's free to share! Click on the business card at the end of the article and scan the code to get it for free!
(1). Basics
1. Basic Java skills
- Introduction to Java (basic concepts and common sense)
- Java syntax
- 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
- gather
- abnormal
- Multithreading
- Files and I\O Streams
(2). Concurrency
1. Concurrent containers
- Summary of concurrent containers provided by JDK
- ConcurrentHashMap
- CopyOnWriteArrayList
- ConcurrentLinkedQueue
- BlockingQueue
- ConcurrentSkipListMap
2. Thread pool
- The benefits of using thread pools
- Executor framework
- (Important) A brief introduction to the ThreadPoolExecutor class
- (Important) ThreadPoolExecutor usage example
- Detailed explanation of several common thread pools
- ScheduledThreadPoolExecutor 详解
- Thread pool size is determined
3. Optimistic locking and pessimistic locking
- What is pessimistic locking and optimistic locking
- Two common implementations of optimistic locking
- Disadvantages of optimistic locking
- Usage scenarios of CAS and synchronized
(3). JVM
1. Java memory area
- Overview
- runtime data area
- Exploring HotSpot Virtual Machine Objects
- key supplementary content
2. JVM garbage collection
- Demystifying JVM memory allocation and recycling
- Subject has died?
- Garbage Collection Algorithms
- garbage collector
3. JDK monitoring and troubleshooting tools
- JDK command line tools
- JDK Visual Analysis Tool
(4) Network, linux, data structure and algorithm, database, system design, necessary tools, interview guide
Due to the limited space, other content will not be shown one by one. This advanced notebook has a total of 512 pages. It should be very helpful for those who want to advance, and I hope it can also help you.
Those who need it can click the card below to get it for free.