package org.apidesign.cycles.array;

 import java.io.IOException;

 import java.io.OutputStream;

 import org.openide.util.Lookup;

 // BEGIN: nocycles.ma2

 public class MutableArray {

     private byte[] arr;

     public MutableArray(byte[] arr) {

         this.arr = arr;

     }

     public void xor(byte b) {

         for (int i = 0; i < arr.length; i++) { arr[i] ^= b; }

     }

     public void encrypt(OutputStream os) throws IOException {

         DoEncode en = Lookup.getDefault().lookup(DoEncode.class);

         assert en != null : "org.netbeans.example.crypt missing!";

         byte[] clone = (byte[]) arr.clone();

         en.encode(clone);

         os.write(clone);

     }    

 }

 // END: nocycles.ma2