Java background folder file traversal complete code

1、 There are two ways to traverse all files in a folder in Java:

1. Recursive traversal is usually the first method that developers can think of. The advantages of recursive traversal are: it is relatively simple to implement, relatively small amount of code and high execution efficiency. The disadvantages are: it eats more memory and has high requirements for hardware

2. Non recursive traversal, recursive traversal is easy to understand, but it's not easy to come up with ideas for non recursive traversal. I thought hard for a long time and found that Java has a LinkedList. Literally, I probably know that this is a list used to save a linked file. It's easy to do with this, The specific idea is as follows: when traversing a folder, if it is a folder, it will be added to LinkedList, and if it is a file, it will be listed; In this way, the files and folders of the directory are traversed, and all the folders are saved in LinkedList; So the rest is to traverse the files in the folder inside the LinkedList. The traversal method is the same as the above operation. If it is a folder, it will be added to the LinkedList (PS: the LinkedList in the traversal process is always the same list). Of course, each time a folder is taken out from the list, the folder needs to be deleted from the list. Here, LinkedList. Removefirst() is used to read it, This is the first element of the list each time it is read and removed from the list. In this way, the traversal is complete as long as the state of LinkedList is isemty.

2、 Use java to traverse a folder and get all the contents in it

design sketch:

summary

The above is the whole content of the complete code for traversing files under the Java background folder. I hope it will be helpful to you. Interested friends can continue to refer to other related topics on this site. If there are deficiencies, please leave a message to point out. Thank you for your support!