共享首选项多字符串集问题

Question

我试图将原始字符串集复制到其他三个字符串集。存储/复制后如下图所示，如果我尝试打印内容不同。任何帮助表示感谢。

{       
    SharedPreferences sp = this.getSharedPreferences("SS", 0);
    Set<String> s = new HashSet<String>(sp.getStringSet("DD", new HashSet<String>()));  

    Object[] array = s.toArray();

    SharedPreferences.Editor editor = sp.edit();
    editor.putStringSet("CC", s);                   
    editor.commit();

    Set<String> zz = new HashSet<String>(sp.getStringSet("ZZ", new HashSet<String>())); 
    zz.add(array[0].toString());
    zz.add(array[1].toString());

    SharedPreferences.Editor editor_zz = sp.edit();
    editor_zz.putStringSet("ZZ", ZZ);                   
    editor_zz.commit();

    Set<String> hop = new HashSet<String>(sp.getStringSet("HH", new HashSet<String>()));    
    hop.add(array[1].toString());
    hop.add(array[0].toString());

    SharedPreferences.Editor editor_hop = sp.edit();
    editor_hop.putStringSet("HH", hop);                 
    editor_hop.commit();


    logSet = null;
    iterator = null;

    logSet = new HashSet<String>(sp.getStringSet("ZZ", new HashSet<String>()));
    iterator = logSet.iterator();
    while (iterator.hasNext())
    {
        String zz = iterator.next();
        Log.d("wrong string Y??","ZZList "+zz);
    }


}