JAVA programming Question DUE IN 2o Min.!! Options

[deteam]

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.

CODE

public class ParkingMeter
{

int timeLeft = 0;
int maxTime;

public ParkingMeter( int max)
{
maxTime = max ;
}

public boolean add ( int coin )
{
if ( coin == 25 )
{
if ( timeLeft +30 <maxTime )
{
timeLeft += 30;
return true;
}
}
return false;
}

public void tick()
{
if ( timeLeft > 0 )
{
timeLeft += 1;
}
}

public boolean isExpired()
{
return timeLeft == 0;
}

}

======================================...
Here are the errors:

Remarks:
⇒ Your add method doesn't modify timeLeft when
the new value of timeLeft equals to maxTime
Remarks:
⇒ At Execution

Problems Detected:
⇒ isExpired() does not return the correct value

Fails When:
⇒ isExpired is false

can some one fix this ?>



EDIT********

CODE

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

this is the updated code im using and it says this

Remarks:
     ⇒     We expected, but did not find:
               •     a public default (or no) constructor.

     ⇒     We did NOT expect, but found:
               •     a public constructor accepting an int parameter.

Reason for edit: Please use codeboxes for long codes; thanks. - Cristy

[deteam]

thnx so much 4 ur help both codes worked perfeclty

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