Java Base64Encoder Class . What is the Purpose of a cipher?

import java.io.UnsupportedEncodingException;
import sun.misc.BASE64Encoder;


public class KeyGenerator {
	public String keyVal;	

    public static void main(String[] args) {

    	KeyGenerator keyGen =new KeyGenerator();
    	
    	try {
    	  System.out.println("String val = " + keyGen.encrypt());
    	} catch (UnsupportedEncodingException e) {
    	    e.printStackTrace();
    	}
    	

    }
    
    //create constructor
    public KeyGenerator(){
    }
    	
    public String encrypt() throws UnsupportedEncodingException{
      String message = "Test string for conversion to a required Base64Encoded key value";	
     	
	  // Get a cipher object.
	  //Cipher cipher = Cipher.getInstance("DES/ECB/PKCS5Padding");
	  //cipher.init(Cipher.ENCRYPT_MODE, message);

	  // Gets the raw bytes to encrypt, UTF8 is needed for
	  // having a standard character set
	  byte[] stringBytes = message.getBytes("UTF8");

	  // encrypt using the cypher
	  //byte[] raw = cipher.doFinal(stringBytes);

	  // converts to base64 for easier display.
	  BASE64Encoder encoder = new BASE64Encoder();
	  String base64 = encoder.encode(stringBytes);

	  return base64;
   }	  
  	  	
	
}

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