FiletoBytes.java

package com.extendedencryption.util;

/*
 * Project: Alfresco Encryption Extension Module , part of the Creative Summer 
 * This code was developped by a group of 3 students from UET-VNU .
 * License   : GNU General Public License, version 2 (http://www.gnu.org/licenses/gpl-2.0.html)
 * 
 */		
	
import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.InputStream;

public class FiletoBytes {
		/**
		 * returns a byte array representation of a given file
		 * 
		 */

		public static byte [] fileToBytes(File file) throws NullPointerException,IOException{
			if(file == null) throw new NullPointerException("Not Found");
			
			// byte array 
			byte[] bytes=new byte[(int)file.length()];
						
			
			InputStream input=new FileInputStream(file);
			
			//read the bytes
			int iter = 0 , block = 0;
			while ( iter < bytes.length) {
				block = input.read(bytes, iter , bytes.length-iter);
				if ( block >= 0 ) {
					iter += block;
				} else {
					break;					
				}
			}
			
			input.close();
			
			return bytes;
		}
}