Base64 Decode Byte Array 

Ostermiller Java Utilities contain various components such as CSV parsing, Base64 Encoding, MD5 digest, String and Exec Helper classes. This requires the library ostermillerutils-1.08.01.jar to be in classpath. The following example shows decoding a Base64 encoded String to byte array.

File Name  :   com/bethecoder/tutorials/ostermillerutils/Base64DecodeByteArrayTest.java  Author  :   Sudhakar KV Email  :   [email protected]

package com.bethecoder.tutorials.ostermillerutils; import java.nio.ByteBuffer; import com.Ostermiller.util.Base64; public class Base64DecodeByteArrayTest {   /**    * @param args    */   public static void main(String[] args) {     //"17291729 as byte array" encoded in Base64     String strToDecode = "AQfZ0Q==";     byte [] bytes = Base64.decodeToBytes(strToDecode);     System.out.println(ByteBuffer.wrap(bytes).getInt());   } }

17291729