Development documentation for programming languages
Python
Click here to jump directly to the official Python documentation link
Click here to jump directly to the Python domestic document link
C/C++
C/C++ reference document link click here to jump directly
API Reference Documentation - Multilingual Collection Links Click here to jump directly
Java
"Alibaba Java Development Manual (Ultimate Edition)"
W3Cschool website organization
Java™ Platform, Standard Edition 8 API Specification
Free Tutorials for Programming Languages
There are also treasures here (other programming learning websites in the collection)
Free tutorials for mainstream programming languages~Treasure website, really comprehensive!