How to make delete particular extension file from a directory

Using this program all the files with the particular extension(.txt) can be deleted at once through java program.

Code:

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import java.io.File;
 import java.io.FilenameFilter;
 import java.lang.*;
 public class delfile {
  public static void main (String args[]) {
    System.out.println("Deleted Files ");
    delfile d = new delfile();
    d.deleteFilesofParticularExtension("c:/javaTips/", ".txt");
    }

  public void deleteFilesofParticularExtension( String d, String e ) {
    FilterExtension filter = new FilterExtension(e);
    File f = new File(d);

    String[] list = f.list(filter);
    File f2;
    if (list.length == 0) return;

    for (int i = 0; i < list.length; i++) {
      f2 = new File(d + list[i]);
      boolean isdeleted =  f2.delete();
      System.out.print(f2);
      System.out.println( "  deleted " + isdeleted);
      }
    }

  class FilterExtension implements FilenameFilter {
    private String ext;
    public FilterExtension( String ext ) {
      this.ext = ext;           
      }
    public boolean accept(File dir, String name) {
      return (name.endsWith(ext));
      }
    }
  }

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