Zandis Murāns

No, it works in other direction.

Yes, there is - by using date fromats:
import java.text.DateFormat; import java.text.SimpleDateFormat; import java.util.Date; ... String dateReceivedFromUser = "12/13/2012"; DateFormat userDateFormat = new SimpleDateFormat("MM/dd/yyyy"); DateFormat dateFormatNeeded = new SimpleDateFormat("yyyy-mm-dd"); Date date = userDateFormat.parse(dateReceivedFromUser); String convertedDate = dateFormatNeeded.format(date);
Anyways, this is not right approach to handle dates in context of database.

This line is problematic:
for (int ltr=0; ltr <= sentence.length(); ltr++)
You're trying to access more char elements than you'r string has (as array's numbering starts at zero not one).
Try to change this line to this:
for (int ltr=0; ltr < sentence.length(); ltr++)

pass
new java.sql.Date(gc.getTime().getTime())

Did you forget about you'r previous post?

Solution is to iterate backwards.

Add Calendar.DAY_OF_MONTH instead of Calendar.DATE

Absolutely impossible.

^<([^<>]+?)><[^"]+?("?)[^"]*\2/></\1>$

You should never do this. Instead, try to parse you'r xml to tell if it's valid or not.

As Campbell Ritchie mentioned already, you should deal such things with regex.
Here's little example:

tf1.addKeyListener(new KeyAdapter() { public void keyReleased(KeyEvent ke) { cust = new Customer(); String text = tf1.getText(); //tf1 textfield if(text.matches("^[^\\d]*?$")) tf2.setEditable(true); else throw new Exception("only string"); } }});

To understand my regex ^[^\d]*?$, please refer to this guide: http://www.regular-expressions.info/tutorial.html

I tried to read what you're trying to achieve three times but no success, sorry.