JavaPoet is a Java API for generating .java source files.
Source file generation can be useful when doing things such as annotation processing or interacting with metadata files (e.g., database schemas, protocol formats). By generating code, you eliminate the need to write boilerplate while also keeping a single source of truth for the metadata.
可想而知，以后的 java 代码将会越来越高效率和动态拼装生成，似乎有点自掘坟墓的感觉。