Write a class named ParkingMeter containing: • An instance variable named timeLeft of type int, initialized to 0. • 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. add returns a boolean value: true if timeLeft was increased, 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. } } 10 11 12 public void tick(){ if (timeLeft > 0) timeLeft-; } 13 - 14 15 16 17 public boolean isExpired(){ if (timeLeft == 0) return true; 18 - 19 20 21 else 22 return false; 23 } 24

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