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

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 FileUtils.checksumCRC32() API. It returns the checksum of given file using CRC32 checksum algorithm.

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


package com.bethecoder.tutorials.commons_io.tests;



import java.io.File;

import java.io.IOException;



import org.apache.commons.io.FileUtils;



public class FileChecksum {



  /**

   * @param args

   * @throws IOException 

   */

  public static void main(String[] args) throws IOException {

    File file = new File("C:/Test/rule_engine_names2.txt");

    

    //Get checksum using CRC32 checksum routine

    long checkSum = FileUtils.checksumCRC32(file);

    System.out.println("File checksum : " + checkSum);

  }

}

File Checksum