Under Eclipse, the difference between Package,source Folder,folder

Under Eclipse, Package,source Folder,folder are all folders.

The differences are as follows:
Package: When you build a package, it is automatically built into the source folder and can only be built under this directory.

SOURCE folder: Folders that store Java source code, and of course include some package folders, and can contain other files as well.
After the project is built, the Java in the source folder is automatically compiled into a class file into the corresponding Bin folder, and the other files are moved to the appropriate directory.

Folder: It can be placed in any file. Includes Java source files, jar files, other files (e.g., pictures, sounds, etc.). Here I explain that if there is a Java source file inside, regardless of whether the program is correct, Eclipse will not error, Treat them as ordinary files. But if the project is to use the files in it, the situation will be different. (normal folder, the file is considered a resource file.)

Under Eclipse, the difference between Package,source Folder,folder