如何從HashMap獲取值？

Question

我想從HashMap獲取properteis。

HashMap<String, Object> getProperties() 

我想獲得屬性是正確的。

Answer 1

例子：

HashMap<String, String> newMap = new HashMap<String, String>(); 
newMap.put("property", "shhh_secret"); 
String value = newMap.get("property"); 

或

Set s = newMap.keySet(); 
for (Iterator iter = s.iterator(); iter.hasNext()) { 
    newMap.get(s); 
} 

或

Iterator iter = newMap.keySet().iterator(); 
while (iter.hasNext()) { 
      ... 
} 

Source and more examples

Answer 2

問題，它可以幫助你：

How to Get Values from List of HashMap?

get string value from HashMap depending on key name

http://www.coderanch.com/t/407505/java/java/Retrieve-values-hashmap

Answer 3

這將有助於讀取HashMap..Simple例如

HashMap<Integer, String> hm = new HashMap<Integer, String>(); 
    hm.put(1, "One"); 
    hm.put(2, "Two"); 
    hm.put(3, "Three"); 

    Set st = hm.entrySet(); //hm.keySet(); 
    for(Iterator itr = st.iterator(); itr.hasNext();) 
    { 
     //hm.get(st); 
     System.out.println(itr.next()); 
    }