accepting a DATE input

[quipy]

what's the best way to accept a date input from a user? can i use Keyboard.readString, and somehow parse the string input as a date? if so, how?

[CornedBee]

Use a java.util.GregorianCalendar to construct a java.util.Date from various components.
To get the components, read in a string (however you do that, Keyboard.readString sounds like some programming class) and use a java.util.StringTokenizer to seperate them, then use Integer.valueOf to get an int.

[Dillinger4]

Just to add. Wether you end up using the GregorianCalendar class or Calendar.getInstance() these classes are not intended to present the fields in a form suitable to the end user. java.text.DateFormat would take care of that issue.

[CornedBee]

Argh, I knew there was something like DateFormat, but I couldn't find it in java.util...

[CornedBee]

You can try DateFormat.parse

[Dillinger4]

Yeah that class seems to come in handy. At least for me. ;)

[quipy]

i cant seem to get a string to "parse" into a date...

String f = new String ("25/12/2000");

Date df = new Date(f);

no?

[CornedBee]

What is the result?

[Dillinger4]

Posted by quipy

i cant seem to get a string to "parse" into a date...

String f = new String ("25/12/2000");

Date df = new Date(f);

no?


Date(java.lang.String) has been deprecated

[Dillinger4]

I really don't think that there is a way to parse a string into a date or construct a date object from a string. All approaches seem to lead to dead ends. :confused:

public class DateExample{
public static void main(String[] args){
try{
// Date to String
Date today = new Date(); //current time and date
DateFormat df = DateFormat.getDateInstance(DateFormat.LONG);
// Styles FULL LONG MEDIUM SHORT,DEFAULT
String d = df.format(today);
System.out.println(d);

/*
String to Date
Should be the same as Date(java.lang.String)
which is deprecated but no compiler warning
is generated

DateFormat df2 = DateFormat.getDateInstance();
Date jan = df2.parse("01/02/03");
System.out.println(jan);
*/

/*
parse(java.lang.String) in java.util.Date
has been deprecated

long date = Date.parse("01/02/03");
Date jandate = new Date(date);
System.out.println(jandate);

*/
}catch(Exception e){;}
}
}

[Dillinger4]

Another dead end. :p

import java.util.Date;
import java.util.StringTokenizer;

public class DateExample{
public static void main(String[] args){
try{
int counter = 0;
int[] i = new int[3];
String date = new String("01/02/03");
StringTokenizer st = new StringTokenizer(date, "/");
while(st.hasMoreTokens()){
i[counter++] = Integer.parseInteger(st.nextToken());
}

// Date(int,int,int) in java.util.Date has been deprecated
Date d = new Date(i[0],i[1],i[2]);
System.out.println(d);

}catch(Exception e){;}
}
}

[CornedBee]

The DateFormat approach should work.
The StringTokenizer approach can be combined with a GregorianCalendar or other Calendar subclass.