您无法更改订单。此构造函数为 insert-order （默认情况下）或访问顺序：

You can not change the order. It is insert-order (by default) or access-order with this constructor:

public LinkedHashMap（int initialCapacity，float loadFactor，boolean accessOrder）

• 构造具有指定初始容量，负载因子和排序模式的空LinkedHashMap实例。

• Constructs an empty LinkedHashMap instance with the specified initial capacity, load factor and ordering mode.

参数：
initialCapacity - 初始容量
loadFactor - 加载因子
accessOrder - 排序模式 - 对于访问顺序为true，对插入顺序为false

Parameters: initialCapacity - the initial capacity loadFactor - the load factor accessOrder - the ordering mode - true for access-order, false for insertion-order

抛出：
IllegalArgumentException - 如果初始容量为负值或负载因子为非正值

Throws: IllegalArgumentException - if the initial capacity is negative or the load factor is nonpositive

请参阅： LinkedHashMap