import org.apache.commons.codec.binary.Base64;



public class CodecDemo {



	public static void main(String args[]) {



		String testString = "Hello World";



		byte[] encodedBytes = Base64.encodeBase64(testString.getBytes());

		String encodedString = new String(encodedBytes);



		System.err.println("Result after encoding \'Hello World\': "

			+ encodedString);



		String decodedString = new String(Base64.decodeBase64(encodedBytes));



		System.err.println("Result after decoding same bytes: " + decodedString);



		byte[] invalidBytes = {'^'};



		System.err.println("Is \'^\' a valid Base64 character? " +

			Base64.isArrayByteBase64(invalidBytes));



	}

}