JAVA关于byte数组与String转换的问题

 1 public class ToString{
 2     public static void main(String[] args){
 3         String aa = "hellow";
 4         byte[] bb = aa.getBytes();
 5         byte[] cc = aa.getBytes();
 6 
 7         System.out.println(aa);
 8         System.out.println(bb.toString());
 9         System.out.println(cc.toString());
10         String dd = new String(bb);
11         System.out.println(dd);
12     }   
13 }