Create a class called Vehicle, that contains five fields, current speed, power, accelerate, decelerate and top speed, all of which type is int.
Define a constructor that takes and sets the accelerate, decelerate; sets the power to 20, and top speed to 120. Leave the current speed as 0.
Also define a constructor that takes no parameters. The power field should be set to the value of 30 in this constructor, top speed to 160, and accelerate and decelerate to reasonable amounts. Leave the current speed as 0.
