中包含HashMap

Question

使用整數

所以我想通過specififying使用包含HashMap：

HashMap totalAtt = new HashMap<String, Integer>(); 

但是當我嘗試添加兩個整數的，它給了我一個錯誤說不好操作。如何添加從此HashMap中檢索到的整數而不出現編譯器錯誤或警告？

編輯：更換了一些代碼，不再讓編譯器錯誤，而未經檢查或不安全的操作

public HashMap<String, Integer> getAttrib() 
{ 
    HashMap<String, Integer> totalAtt = new HashMap(); 

    //Creates key values and initializes them to 0 
    totalAtt.put("strength", 0); 
    totalAtt.put("dexterity", 0); 
    totalAtt.put("constitution", 0); 
    totalAtt.put("intelligence", 0); 
    totalAtt.put("wisdom", 0); 
    totalAtt.put("charisma", 0); 

    HashMap<String, Integer> sAtt; 

    for(Sprite s: itemList) 
    { 
     //iterates through items and counts their attributes 
     sAtt = s.getAttrib(); 

     totalAtt.put("strength", totalAtt.get("strength") + sAtt.get("strength")); 
     totalAtt.put("dexterity", totalAtt.get("dexterity") + sAtt.get("dexterity")); 
     totalAtt.put("constitution", totalAtt.get("constitution") + sAtt.get("constitution")); 
     totalAtt.put("intelligence", totalAtt.get("intelligence") + sAtt.get("intelligence")); 
     totalAtt.put("wisdom", totalAtt.get("wisdom") + sAtt.get("wisdom")); 
     totalAtt.put("charisma", totalAtt.get("charisma") + sAtt.get("charisma")); 
    } 

    return totalAtt; 
} 

從Sprite類的警告：

public HashMap<String, Integer> getAttrib() 
{ 
    return attrib; 
} 

Answer 1

變化

HashMap totalAtt = new HashMap<String, Integer>(); 

到

HashMap<String, Integer> totalAtt = new HashMap<>(); 

和

HashMap sAtt 

到

HashMap<String, Integer> sAtt