public static void main(String[] args) {
UserBean userBean=new UserBean();
Method[] methods=userBean.getClass().getMethods();
String name=methods[2].getName();
System.out.println(name);
}
}
輸出的是getUid（），沒有錯
Klaus。(741691740) 11:23:20
但是：
public static void main(String[] args) {
UserBean userBean=new UserBean();
Method[] methods=userBean.getClass().getMethods();
String name=methods[2].getName();
System.out.println(name);
System.out.println(name.equals("getUid"));
System.out.println(name);
}
}
我多加了一句話。怎麼就變成了輸出getVaules了？
你看幫助文檔就能找到答案了，下面我貼一段Class類中getMethod()方法的描述，裡面說得非常清楚，獲得的Class數組是沒有排序的。
public Method[] getMethods() throws SecurityException
Returns an array containing Method objects reflecting all the public member methods of the class or interface represented by this Class object, including those declared by the class or interface and those inherited from superclasses and superinterfaces. Array classes return all the (public) member methods inherited from the Object class. The elements in the array returned are not sorted and are not in any particular order. This method returns an array of length 0 if this Class object represents a class or interface that has no public member methods, or if this Class object represents a primitive type or void.
看這句話
The elements in the array returned are not sorted and are not in any particular order.
當你修改代碼之後就，Method[]中的元素的順序就會被打亂。
不知道我給的答案是不是完全正確，期待更好的解釋。
