Java implementation of simple file filter function

Code idea:

If you want to loop through all subfolders under a folder, you need to use recursion.

First, determine whether the path exists:

Yes: get file

Determine whether the folder:

Yes: call itself to continue to get the contents under the subfolder

No: judge the file suffix, and output if it is qualified

No: output prompt

Summary and questions:

Yesterday, I learned to output all the files in the folder. Today, I changed it a little to find the files with the specified suffix under the folder.

Because there is no hierarchy when outputting, a cycle is written to add spaces in front of the output file to make the hierarchy clear. Later, it is found that the space is not clear enough for the hierarchy of Chinese characters. When encountering Chinese characters, it will indent several spaces, but not with symbols.

There is also an unresolved problem of how to control the specified suffix.

The above simple file filter function implemented in Java is all the content shared by Xiaobian. I hope it can give you a reference and support more programming tips.