This method propagates any exception thrown by the nullary constructor, including a checked exception. Use of this method effectively bypasses the compile-time exception checking that would otherwise be performed by the compiler. The Constructor.newInstance method avoids this problem by wrapping any exception thrown by the constructor in a (checked) InvocationTargetException.
The call
 clazz.newInstance()
can be replaced by
 clazz.getDeclaredConstructor().newInstance()
The latter sequence of calls is inferred to be able to throw the additional exception types InvocationTargetException and NoSuchMethodException. Both of these exception types are subclasses of ReflectiveOperationException.
Signed-off-by: Nymph2333 <498092988@qq.com>

Signed-off-by: Rain <938448486@qq.com>

实际项目开发中，可能会为所有定时任务类建一个共同的父类，任务的执行入口在父类定义，以便管理。此时使用 `getDeclaredMethod()` 是无法从子类找到要执行的方法的，而是要换用 `getMethod()` 方法。
Signed-off-by: 捏造的信仰 <yiding.he@gmail.com>

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