BE THE CODER > Tools and Libs > Commons IO Examples > Filters

Apache Commons IO is a java library with simple IO utilities and filters. This requires the library commons-io-2.1.jar to be in classpath. The following example shows using FileFilterUtils.ageFileFilter() API. It returns a filter that returns TRUE if the file's last modified time stamp is older than (before) the given reference files's last modified time stamp.

File Name :	com/bethecoder/tutorials/commons_io/tests/filters/AgeFilterRefFileTest.java
Author :	Sudhakar KV
Email :	[email protected]


package com.bethecoder.tutorials.commons_io.tests.filters;



import java.io.File;

import java.io.FileFilter;

import java.io.IOException;

import java.util.Date;



import org.apache.commons.io.filefilter.FileFilterUtils;



public class AgeFilterRefFileTest {



  /**

   * @param args

   * @throws IOException 

   */

  public static void main(String[] args) {

    File directory = new File("C:/input");

    File refFile = new File("C:/input/db.png");



    //Files with modified date after the specified date

    File[] files = directory.listFiles((FileFilter)

        FileFilterUtils.ageFileFilter(refFile));



    System.out.println("Ref file TS : " + new Date(refFile.lastModified()));



    for (File file : files) {

      System.out.println(file + " " + new Date(file.lastModified()));

    }

  }

}

Age Filter with Cutoff Reference