Check files in directory java

Similar to the previous method, this one can be used to return the names of files and directories, but this time we get them as an array of File objects, which gives us the ability to directly manipulate them:.

Now, let's traverse deeper into the file system using recursion and some more methods to use on the File object:. In Java 8 and later we can use the java. Files class to populate a Stream and use that to go through files and directories, and at the same time recursively walk all subdirectories.

Note that in this example we will be using Lambda Expressions :. Check out our hands-on, practical guide to learning Git, with best-practices, industry-accepted standards, and included cheat sheet. Using this method, you can get the filtered names of the files and directories in a particular folder.

This method accepts a FilenameFilter object and returns a File array containing the objects of all the files and directories in the path represented by the current File object. But the retuned array contains the files objects which are filtered based on their name.

Using this method, you can get the filtered file objects of the files and directories in a particular folder, according to their names.

The result of Files. That's a Path pointing to the location. I don't know if this example could help you further, but it seems like you would need your own custom file visitor. Here is an alternative solution:. Stack Overflow for Teams — Collaborate and share knowledge with a private group.

Create a free Team What is Teams? Collectives on Stack Overflow. Learn more. Asked 3 years, 1 month ago. Active 3 years ago. Viewed 3k times. LuCio 4, 1 1 gold badge 17 17 silver badges 31 31 bronze badges. PSingh PSingh 4 4 silver badges 14 14 bronze badges. Add a comment. Active Oldest Votes. Verifying the Existence of a File or Directory The methods in the Path class are syntactic, meaning that they operate on the Path instance.

When you are testing a file's existence, three results are possible: The file is verified to exist. The file is verified to not exist. The file's status is unknown. This result can occur when the program does not have access to the file.