getMethods() & getDeclaredMethods()

Member接口中的定义：

    /**
     * Identifies the set of all public members of a class or interface,
     * including inherited members.
     */
    public static final int PUBLIC = 0;

    /**
     * Identifies the set of declared members of a class or interface.
     * Inherited members are not included.
     */
    public static final int DECLARED = 1;

Declare：

this object, including public, protected, default (package) access, and private methods, but excluding inherited methods.

当前类型的所有方法。

Public：

including those declared by the class or interface and those inherited from superclasses and superinterfaces.

包括继承的公有方法。