Java Casting ArrayIterator <Object>

Question

queryMe方法返回一個ArrayIterator < Me>。 queryYou方法返回一個ArrayIterator < You>。

public ArrayIterator<Object> query(String table, String field, String criterion) 
{ 
    ArrayIterator<Object> result = null; 

    if (table.equals("MyTable") 
    { 
     result = MyTable.queryMe(field, criterion); 
    } 
    else if (table.equals("YourTable") 
    { 
     result = YourTable.queryYou(field, criterion); 
    } 

    return result; 
} 

我收到說

ArrayIterator<Me> and ArrayIterator<Java.lang.object> are incompatible types. 

任何建議的錯誤？