WildcardFileFilter in Commons IO filters the files using the supplied wildcards.

Class Declaration

Following is the declaration for org.apache.commons.io.filefilter.WildcardFileFilter Class −

public class WildcardFileFilter
   extends AbstractFileFilter implements Serializable

Example of WildcardFileFilter Class

Here is the input file we need to parse

Welcome to TutorialsPoint. Simply Easy Learning.

Let”s print all files and directories in the current directory and then, filter a file whose name ends with t.

IOTester.java

import java.io.File;
import java.io.IOException;
import org.apache.commons.io.filefilter.WildcardFileFilter;
public class IOTester {
   public static void main(String[] args) {
      try {
         usingWildcardFileFilter();
      } catch(IOException e) {
         System.out.println(e.getMessage());
      }
   }
   public static void usingWildcardFileFilter() throws IOException {
      //get the current directory
      File currentDirectory = new File(".");
      //get names of all files and directory in current directory
      String[] files = currentDirectory.list();
      System.out.println("All files and Folders.n");
      for( int i = 0; i < files.length; i++ ) {
        System.out.println(files[i]);
      }
      System.out.println("nFile name ending with t.n");
      String[] filesNames = currentDirectory.list( new  WildcardFileFilter("*t"));
      for( int i = 0; i < filesNames.length; i++ ) {
        System.out.println(filesNames[i]);
      }
   }
}

Output

It will print the following result.

All files and Folders.

.classpath
.project
.settings
bin
input.txt
src

File name ending with t

.project
input.txt