创建一个MAP的栗子:

1         Map
     
       tempMap = new HashMap
      
       ();2         tempMap.put("abc", 1);3         tempMap.put("aoe", 2);4         tempMap.put("xyz", 3);
      
     

 

方法一:

1         Iterator
     
      
       > it = tempMap.entrySet().iterator();2         while (it.hasNext()) {3             Entry
       
         entry = it.next();4             Object key = entry.getKey();5             Object value = entry.getValue();6             System.out.println("key=" + key + " value=" + value);7         }
       
      
     

方法二:

1         for (Map.Entry
     
       entry : tempMap.entrySet()) {2             String key = entry.getKey().toString();3             String value = entry.getValue().toString();4             System.out.println("key=" + key + " value=" + value);5         }
     

方法三:

1         for (Iterator
     
       i = tempMap.keySet().iterator(); i.hasNext();) {2             Object obj = i.next();3             System.out.println(obj);4             System.out.println("key=" + obj + " value=" + tempMap.get(obj));5         }6         for (Iterator
      
        i = tempMap.values().iterator(); i.hasNext();) {7             Object obj = i.next();8             System.out.println(obj);9         }
      
     

方法四:

1         for (Object o : tempMap.keySet()) {2             System.out.println("key=" + o + " value=" + tempMap.get(o));3         }