How to List All Files in a Directory Using Java?

How to Obtain File Names from a Directory

Question:

Devise a method to retrieve a list containing the file names within a specified directory. The desired output is a list of file names (e.g., ["000", "012", "013"]).

Answer:

To achieve this, utilize the following code snippet in Java:

<code class="java">import java.io.File;

public class FileLister {

    public static void main(String[] args) {
        File folder = new File("your/path");
        File[] listOfFiles = folder.listFiles();
        if (listOfFiles != null) {
            for (File file : listOfFiles) {
                if (file.isFile()) {
                    System.out.println("File " + file.getName());
                } else if (file.isDirectory()) {
                    System.out.println("Directory " + file.getName());
                }
            }
        }
    }
}</code>

Additional Note:

The provided code retrieves all file types within the directory. To specify a desired file type (e.g., JPEG), add the following filter to the listFiles() method:

<code class="java">File[] listOfFiles = folder.listFiles(new FileFilter() {
    @Override
    public boolean accept(File file) {
        return file.getName().endsWith(".jpg");
    }
});</code>

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