Java is a pure object-oriented programming language, so in addition to the basic syntax, you must understand its oop features: encapsulation, inheritance, and polymorphism . In addition, there are generic and reflection features. Many framework technologies rely on it, such as Spring's core Ioc and AOP, which use reflection, and Java's own dynamic proxy is also implemented by reflection.
In addition, some Java standard libraries are also very common, such as collections, I/O, and concurrency, which are almost ubiquitous in Web development. They are also often asked in interviews. So before interviewing Java back-end positions, you may wish to call Good foundation for these cores.
As the back garden of programmers, Github has always been the most popular place for programmers to stroll and learn. The editor is no exception. Recently I saw a note on the core architecture of Ali P8Java , which has been marked as 81.6K . I was surprised. I looked at it and felt that the knowledge points were organized in great detail. It is worthwhile to get so many stars. The information has been sorted out and the benefits are distributed to friends!
Sanlian + follow , and then reply the keyword "888" in the private message editor or look at the following to get the PDF version of the " Compared Notes for Benchmarking Ali P7 Knowledge Points ".
One, Java basics
- 1.1Java basic skills
- 1.2Java syntax
- 1.3 data type
- 1.4 Method (function)
- 1.5 Java object-oriented
- 1.6 Collection
- 1.7 Multithreading
- 1.8 File and I/O Stream
Second, concurrency
- 2.1 Summary of concurrent containers
- 2.2 Summary of optimistic and pessimistic locking
- 2.3 Summary of Atomic Atomic Classes in JUC
- 2.4 AQS principle and summary of AQS synchronization components
Three, JVM
- 3.1Java memory area
- 3.2JVM garbage collection
- 3.3 JDK monitoring and troubleshooting tools
- 3.4 class file structure
- 3.5 class loading process
- 3.6 class loader
- 3.7JVM configuration common parameters and common GC tuning strategies
Four, other
- Summary of BIO, NIO, AIO
- Summary of new Java 8 features, recommendation of Java 8 learning resources, Java 8 forEach guide
- Summary of Java programming specifications and elegant Java code practices
- Summary of design patterns
Five, data structure and algorithm
- Detailed Bloom Filter
- Summary of string algorithm questions
- Summary of linked list algorithm questions
- Detailed explanation of high-level real problems of algorithm manufacturers
Six, MySQL
- [Recommended] Summary of MySQL/Database Knowledge Points
- Some best practices in the database section of Alibaba Development Manual
- A thousand rows of MySQL study notes
- MySQL high-performance optimization specification recommendations
Seven, Redis
- 5 basic data structures
- Skip list
- In-depth exploration of distributed locks, Redlock distributed locks, how to make reliable distributed locks, is Redlock really feasible?
- Magic HyperLoglog solves statistical problems
- Billion-level data filtering and Bloom filter
- GeoHash finds people nearby
- Endurance
- Publish Subscribe and Stream
8. Common framework
- Summary of Spring common problems
- SpringBoot guide
- Summary of Spring/Spring common annotations!
- Spring transaction summary
- Detailed explanation of Spring IoC and AOP
- The scope and life cycle of Bean in Spring
- Detailed explanation of SpringMVC working principle
- What design patterns are used in Spring?
Nine, distributed
Ten, message queue
- RabbitMQ
- RocketMQ
- Kafka
11. ZooKeeper
- [Getting Started] Summary of ZooKeeper related concepts
- [Advanced] Zookeeper principle
- [Extension] ZooKeeper data model and common commands
12. Microservices
Thirteen, Docker
- Docker download image
- Docker view image information
- Docker search image
- Docker delete image
Directory outline
Sanlian + follow , and then reply to the keyword "888" in the private message editor or scan the following to get the PDF version of the " Compared Notes for Benchmarking Ali P7 Knowledge Points ".
Learning message
I think that if you have thoroughly read these knowledge notes, you can really go to Alibaba to interview p7 post. It is not important whether the interview is successful or not, it is important that you at least worked hard, right?