How to show .txt extension files in a folder (Java)

How to show (.txt) extension files in a folder:

The following code shows you how to show the .txt files in folder. For this you have to implement an FilenameFilter interface which let you do this.
 

Code

public class Test implements FilenameFilter {

      

   private String ext;

      

   public Test(String _ext) {

           

          this.ext = "." + _ext;

   }

       
  // overriding method of interface FileameFilter

   public boolean accept(File directoryName, String fileName) {

             

       return fileName.endsWith(ext);

   }

       
public static void main(String[] args) {

 // Showing Those Files Which Have .txt Extension

      

     FilenameFilter onlyExt = new Test("txt");

     String[] fileListTxt = fl.list(onlyExt);

             

     System.out.println("Directory Contains Files With .txt Extension ");

             

         for (int i = 0 ; i < fileListTxt.length ; i++) {

                  

                System.out.println(fileListTxt[i]);

         }

    }

}