map stack queue 遍历

iteye_11997

于 2009-10-15 10:25:12 发布

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分类专栏： J2EE 文章标签： java

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Set<Entry<String,Object>> entrySet = map.entrySet(); 
for (Entry<String, Object> entry : entrySet) { 
Object o = entry.getValue(); 
}

//JDK1.5
Map  m  =  new HashMap();  
  for   (Object o  : map.keySet()){  
          map.get(o);  
  }

JDK1.4

Map map =  new HashMap()   ;  
   
  Iterator   it   =   map.entrySet().iterator()   ;  
  while   (it.hasNext())  
  {  
  Map.Entry   entry   =   (Map.Entry)   it.next()   ;  
  Object   key   =   entry.getKey()   ;  
  Object   value   =   entry.getValue()   ;  
  }

stack

while (!s.empty()) { 
                        System.out.println(s.pop()); 
                }

queue

while (q.peek() != null) { 
                        System.out.println(q.poll()); 
                }