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6 January, 12:42

Write a class named ParkingMeter containing: Two instance variables named timeLeft and maxTime of type int. The value of timeLeft should be initialized to 0. A constructor accepting a single integer parameter whose value is used to initialize the maxTime instance variable. A method named add that accepts an integer parameter. If the value of the parameter is equal to 25, the value of timeLeft is increased by 30; otherwise no increase is performed. Furthermore, the increase occurs only if the value of timeLeft will not exceed the value of maxTime. add returns a boolean value: true if timeLeft was increase, false otherwise. A method named tick that accepts no parameters and returns no value. tick decreases the value of timeLeft by 1, but only if the value of timeLeft is greater than 0. A method named isExpired that accepts no parameters. isExpired returns a boolean value: true if the value of timeLeft is equal to 0; false otherwise.

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Answers (1)
  1. 6 January, 12:52
    0
    The answer for the given question is explained below.

    Explanation:

    public class Parking Meter

    {

    int time Left = 0;

    int max Time;

    public Parking Meter (int max) {

    max Time = max;

    }

    public boolean add (int coin)

    {

    if (coin = = 25)

    {

    if (time Left + 30 < max Time)

    {

    time Left + = 30;

    return true;

    }

    }

    return false;

    }

    public void tick ()

    {

    if (time Left > 0)

    {

    time Left - = 1;

    }

    }

    public boolean is Expired ()

    {

    return time Left = = 0;

    }

    }
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