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Thread: Current Date and Time to a String

  1. #1
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    Default Current Date and Time to a String

    import java.text.DateFormat;
    import java.text.SimpleDateFormat;
    import java.util.Calendar;
    import java.util.Scanner;


    public class Swipe_In
    {
    public String DTStart; //Swipe in Date Time


    public static void main()
    {

    //Swipe_In demo = new Swipe_In();

    System.out.println("Press 1 for Swipe In ...");

    Scanner flagIn = new Scanner(System.in);
    int checkIn = flagIn.nextInt();

    if (checkIn==1)
    {
    System.out.println("You have successfully Swiped In...");

    //current(Swipe In) Date & Time as DTStart
    DateFormat dateFormat = new SimpleDateFormat("yyyy/MM/dd HH:mm:ss");
    Calendar cal = Calendar.getInstance();
    DTStart = dateFormat.format(cal.getTime()); //acquires the current time and date...


    System.out.println("Swiped In @ " + DTStart); // <--error here ...

    }
    else
    {
    System.out.println("Swipe In Unsuccessful ...Try Again");
    }


    }


    }




    I have got 2 questions on the above class...

    1) I get an error "Cannot make a static reference to the non-static field DTStart" wherever i use DTStart in the main
    method....What's causing this error? and How do i fix it for good?

    2) public String DTStart;
    Once i get the current date & time assigned to the above DTStart String in the main method i cannot use the updated
    value of DTStart in any other class. In another class i wanna create an instance(object) of this Swipe_In class with
    DTStart assigned to the current time(as in its main method)..I tried but the object's DTStart gets assigned to null.((
    How do i achieve this? Hope i haven't twisted my last question too much..

    I would really appreciate your time and effort if u can help me with my prob....Thank u ...)


  2. #2
    Super Moderator Norm's Avatar
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    Default Re: Current Date and Time to a String

    Cannot make a static reference to the non-static field DTStart
    Make it static


    Please edit your post and wrap your code with code tags:
    [code=java]
    YOUR CODE HERE
    [/code]
    to get highlighting and preserve formatting.
    If you don't understand my answer, don't ignore it, ask a question.

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