How to obtain a list of files in a folder

In this blog post, I will be explaining how you can obtain a list of files in a folder. Consider the following code snippet:

package learnjava.io;

import java.io.File;

public class FilesInFolderDemo {

public static void main(String[] args) {
String folderName = "F:/TestFolder";
File file = new File(folderName);
if (file.exists() && file.isDirectory()) { // check if file exists & is a folder
File[] files = file.listFiles(); //get list of files
if (files.length > 0) {
System.out.println("There are " + files.length + " files in the folder");
for(int i = 0; i < files.length;i++){
System.out.println("File name is "+files[i]);
}

} else { //empty folder!
System.out.println("Folder is empty !");
}
} else {
System.out.println("Folder "+folderName+" is missing or is not a folder");
}

}

}

There is a method called File.list on the file interface. If the File object corresponding to the specified path is a directory, then this method will return a list of file names. So the code above will print the following output (assuming there are 2 files test.txt and test2.txt in the TestFolder):

There are 2 files in the folder
File name is F:\TestFolder\test.txt
File name is F:\TestFolder\test2.txt