convert string to a date

[exose]

Hi,

I am trying to convert string which looks like:

DD/MM/YY for example 10/11/2010

I have created some code but I am getting an error:

System.out.print("Enrollment Date:");
//tmp.setEnrollmentDate(scan.next());
SimpleDateFormat dateFormat = new SimpleDateFormat("DD/MM/yy");
Date convertedDate = dateFormat.parse(tmp.setEnrollmentDate(scan.next()));

error:
'void' type not allowed here

do you have any idea how I can solve that issue please?

[JosAH]

Hi,

I am trying to convert string which looks like:

DD/MM/YY for example 10/11/2010

I have created some code but I am getting an error:

System.out.print("Enrollment Date:");
//tmp.setEnrollmentDate(scan.next());
SimpleDateFormat dateFormat = new SimpleDateFormat("DD/MM/yy");
Date convertedDate = dateFormat.parse(tmp.setEnrollmentDate(scan.next()));

error:
'void' type not allowed here

do you have any idea how I can solve that issue please?

What is the return type of your setEnrollmentDate( ... ) method?

kind regards,

Jos

[Fubarable]

You appear to have your methods in the wrong location. I assume that setEnrollmentDate takes a Date parameter, and you're passing it a String. If my assumptions are incorrect, then please give us the necessary details.

e.g.,

String response = scan.nextLine();
Date convertDate = dateFormat.parse(response);  // do this in a try/catch block
tmp.setEnrollmentDate(convertDate);

[exose]

Well, let me give you more details:

the requirements for my assignment is:

Enrolment Date - string in format DD/MM/YY

So what I did is:

Student class what has:

....
private String enrollmentDate; 

public void setEnrollmentDate (String newEnrollmentDate)
	{
		enrollmentDate = newEnrollmentDate;
	}

public String getEnrollmentDate()
    {
      return enrollmentDate;
    }

then a code from StudentDatabase:

	public void addStudent()
	{
			Student tmp = new Student();

			System.out.print("Student Name:");
			tmp.setFirstName(scan.next());

			System.out.print("Student Surname:");
			tmp.setLastName(scan.next());

			System.out.print("Enrollment Date:");
			String response = scan.nextLine();
			//tmp.setEnrollmentDate(scan.next());
			SimpleDateFormat dateFormat = new SimpleDateFormat("DD/MM/yy");
			Date convertDate = dateFormat.parse(response);
    		tmp.setEnrollmentDate(convertDate);

			System.out.print("Year on the course:");
			tmp.setCourseYear(scan.nextInt());

			students[studentCounter] = tmp;
			studentCounter++;
	}

I am trying to force user to input date in correct format which should be as requested DD/MM/YY

now I have:

setEnrollmentDate(java.lang.String) in Student cannot be applied to (java.util.Date) error

[Fubarable]

So setEnrollmentDate accepts a String, not a Date object -- so then do that -- pass it the String, not a Date object.

You can try to validate the input with a SimpleDateFormat object or, since it is a simple validation, use a simple regular expression. But don't use the Date retrieved from the SimpleDateFormat's parse in any of your method calls. You'll need to dispose of it.

[exose]

can you tell me what I did wrong here?

			System.out.print("Enrolment Day:");
			tmp.setEnrolmentDay(scan.nextInt());
			if ((tmp.getEnrolmentDay() < 1)&&(tmp.getEnrolmentDay() > 32));
			{
				System.out.println("You have typed wrong day, please do it again!");
				System.out.print("Enrolment Day:");
				tmp.setEnrolmentDay(scan.nextInt());
			}

If statement does not work as intended, I wanted to have if 'day' is less than 1 and >32 input again.

thanks in advance
E

[ozzyman]

dude you have a semi-colon after the condition, remove the semi-colon and it will run the if block

if ((tmp.getEnrolmentDay() < 1)&&(tmp.getEnrolmentDay() > 32));

[exose]

:eek:

thanks! anyway, condition does not work now, it doesnt check

tmp.setEnrolmentDay(scan.nextInt());

how i can include scan.nextInt() in if ((tmp.getEnrolmentDay() < 1)&&(tmp.getEnrolmentDay() > 32))? :O

[ozzyman]

Lol, another silly error by both of us:

if ((tmp.getEnrolmentDay() < 1)&&(tmp.getEnrolmentDay() > 32))

Should've said

if ((tmp.getEnrolmentDay() < 1) || (tmp.getEnrolmentDay() > 32))

i.e. OR, not "AND" because there is no way the day can be <1 AND >32. It can be <1 OR >32 though.

[exose]

^^

I guess, I should check this out for specific row in an array so maybe I should go for:

if ((students[studentCounter].getEnrolmentDay() < 1)||(students[studentCounter].getEnrolmentDay() > 32))
			{
				System.out.println("You have typed wrong day, please do it again!");
				System.out.print("Enrolment Day:");
				tmp.setEnrolmentDay(scan.nextInt());
			}

Or something similar?

but with that I got:

Exception in thread "main" java.lang.NullPointerException

[exose]

got it to work i just needed to add:

students[studentCounter] = tmp;