我只是想知道是否需要在下面的A點對null進行檢查。在那個時候它會永遠是空嗎?或者它只會是空的/非空的?這個數組列表是否可以等於null?
Thx提前尋求幫助!
List myList = new ArrayList();
PreparedStatement ps = null;
ResultSet rs = null;
String sql ="SELECT * FROM XXXXX";
ps = getDBConnection.prepareStatement(sql);
rs = ps.executeQuery();
while (rs.next()) {
//Add the row to myList using myList.add...
}
if (myList != null){ //POINT A
//Implement some logic
}
..
感謝您的確認!+1 :) – user656523