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.readFileToByteArray() API. It returns the entire file content as byte array.

File Name :	com/bethecoder/tutorials/commons_io/tests/ReadFileToByteArray.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 ReadFileToByteArray {



  /**

   * @param args

   * @throws IOException 

   */

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

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

    byte [] fileBytes = FileUtils.readFileToByteArray(file);

    String fileContent = new String(fileBytes);

    System.out.println(fileContent);

  }

}

Read File to Byte Array