如何在java中爲類創建動態對象？

Question

例：

Element elementInclude1 = doc.createElement("include"); 
elementMethods.appendChild(elementInclude1); 
elementInclude1.setAttribute("name", "T1"); 

Element elementInclude2 = doc.createElement("include"); 
elementMethods.appendChild(elementInclude2); 
elementInclude2.setAttribute("name", "T2"); 

Element elementInclude3 = doc.createElement("include"); 
elementMethods.appendChild(elementInclude3); 
elementInclude3.setAttribute("name", "T3"); 
.... 

在上述示例中，創建的對象（elementInclude1，elementInclude2，..）的數目是動態已知的。

運行時所需的對象數目是已知的，使用該值在循環中迭代每次迭代中創建的新對象。我怎麼能做到這一點。

需要創建對象elementInclude1，elementInclude2，elementInclude3，...而動態運行時

只是爲了更好地理解我使用了一些錯誤的做法，在下面的代碼。

String noOfObj = 5; 
for(int i = 1; i<=noOfObj; i++) 
{ 
Element elementInclude+**noOfObj** = doc.createElement("include"); 
elementMethods.appendChild(elementInclude+**noOfObj**); 
elementInclude+**noOfObj**.setAttribute("name", "T1"); 
} 

Answer 1

int noOfObj = 5; 
    //create an array to hold elements 
    Element[] elememtsArray = new Element[noOfObj]; 

    for(int i = 1; i<=noOfObj ; i++){ 

     Element element = doc.createElement("include"); 
     elememtsArray[i] = element; 
    } 

另外，如果要素的數量是未已知的，使用列表

ArrayList<Element> elementsList = new ArrayList<>(); 

    for(int i = 1; i<= 6 ; i++){//6 is an arbitrary num for demo 

     Element element = doc.createElement("include"); 
     elementsList.add(element); 
    } 

另外，如果您需要引用名稱，使用地圖

Map<String, Element> elementsMap= new HashMap(); 
    for(int i = 1; i<=7 ; i++){ //7 is an arbitrary num for demo 

     Element element = doc.createElement("include"); 
     String elementName = "elementInclude"+ i; 
     elementsMap.put(elementName, element); 
    }