Write a dass named ParkingMeter containing: . An instance variable named timelef

Question

Write a dass 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 valus of timeleft is incrcased by 30; otherwise no increase is performed. add returns a boolean yalue: 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 yalue 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

Explanation / Answer

public class ParkingMeter {
private int timeLeft = 0;
  
public boolean add(int n) {
if(n == 25) {
timeLeft += 30;
return true;
}
else return false;
}
  
public void tick() {
if(timeLeft > 0)
timeLeft--;
}
  
public boolean isExpired() {
if(timeLeft == 0) return true;
else return false;
}
}

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