Consider a class MotorBoat that represents motorboats. A motorboat has attributes for
• The capacity of the fuel tank
• The amount of fuel in the tank
• The maximum speed of the boat
• The current speed of the boat
• The efficiency of the boat’s motor
• The distance traveled
The class has methods to
• Change the speed of the boat
• Operate the boat for an amount of time at the current speed
• Refuel the boat with some amount of fuel
• Return the amount of fuel in the tank
• Return the distance traveled so far
If the boat has efficiency e the amount of fuel used when traveling at a speed s for time t is e×s2× t. The distance traveled in that time is s× t.
a. Write a method heading for each method.
b. Write preconditions and postconditions for each method.
c. Write some Java statements that test the class.
d. Implement the class.
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