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HashMap sort by key

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  1. HashMap按key排序
  2.  HashMap   map   =   new   HashMap();  
  3.          map.put("0201",   "0201");  
  4.          map.put("01",   "01");  
  5.          map.put("0304",   "0304");  
  6.          map.put("0101",   "0101");  
  7.  
  8.          Object[]   key   =     map.keySet().toArray();  
  9.          Arrays.sort(key);  
  10.  
  11.          for   (int   i   =   0;   i   <   key.length;   i++)   {  
  12.                  System.out.println(map.get(key[i]));  
  13.          }

URL: http://levi.bloghome.cn/posts/120920.html

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