help me with getter and setters in class

[javanew]

Well, please read carefully AND answer me carefully..

this is written in a class called "Paycheck"
it is a setter method.
public void setCheckNum(String checkNum) {
this.checkNum = checkNum;
}

now i want to refuse any checkNumber != 8 digits...
how can i do it ??
and do i have to make any changes in the constructor ? or here in the setter method,,,
The idea is that i dont want to create an object if checkNum != 8 digits
Note :ALL data fields are private ..
please help !!:confused::confused::

[iluxa]

Think of it this way: can you EVER have a check with no check number, or with a wrong check number?
If your answer is "never", then you have to modify the constructor so that the check number is passed into it, and kill the setter.
If your answer is "sometimes", then keep the setter.

now to find out whether there're 8 digits in the number, do checkNum.length() == 8...

[Fubarable]

this is written in a class called "Paycheck"
it is a setter method.
public void setCheckNum(String checkNum) {
this.checkNum = checkNum;
}

now i want to refuse any checkNumber != 8 digits...
how can i do it ??
and do i have to make any changes in the constructor ? or here in the setter method,,,
The idea is that i dont want to create an object if checkNum != 8 digits
Note :ALL data fields are private ..
please help !!:confused::confused::

If you don't want to create an object, then as noted above, you'll probably have to have a single constructor for the class and have it take a checkNum parameter. If it is not valid, then have the constructor throw an exception.

Well, please read carefully AND answer me carefully..

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