In java, write a class named Clock that meets the following requirements:

The class has three instance variables: One of type int called hours, another of type boolean

called isTicking, and the last one of type Integer called diff.

The class has a constructor that takes three parameters: an int for hour, a boolean for isTicking,

and another int for diff. The constructor constructs a Clock with the specified values.

A method named increment with no arguments and no return value. It increases the hours by $1$

if the hour is less than $12.$

A method named decrement with no arguments and no return value. It decreases the hours by

$1$ if hour is greater than $0.$

Write a test program that creates a Clock with hour $10,$ isTicking false, and diff $5$ and then

invokes the increment method once and then the decrement method once.