🚀 go-pugleaf

Julio Rincon wrote:
> 
> I'm trying to do simple calculations on a frame and I'm having many
> problems.  To simplify I have setup two FieldControl components  on a
> Frame (fieldOne and fieldTwo) and I am trying to do the following:
> 
>   1) pull the string from fieldOne
>   2) convert it to integer to do some calculations
>   3) convert the new value back to string
>   4) set the textfield of fieldTwo to new string value
> 
> I setup an event with the following code that would execute if the
> value of fieldOne changed, the calculations are omitted since they're
> not the cause of the problem:
> 
>   String test = fieldOne.getText();
>   int itest = Integer.parseInt(test);
>   String stest = Integer.toString(itest);
>   fieldTwo.setText(stest);
> 
> This works if I type integers into fieldOne but it doesn't work if I
> type in currency amounts (e.g. 55.55).  When I type in currency
> amounts nothing happens, not even an error message.
> 
> If I link fieldOne to a table field in a database I get an error
> message: EventDispatchThread.java:63.
> 
> I have tried converting the text from fieldOne to a float number, but
> not have much luck since I can't figure out the correct syntax from
> the Float class (valueOf).  I have been trying to figure this out for
> a couple of hours and am quite confused.
> 
> Any help would be appreciated!
> 
> Julio.

Hello Julio,

  Yeah, I got mixed up on this in the past when i was trying to do a lot
of conversions as well.  I found that the easiest way to do the
conversion from string to a float or int was to use the Integer class
or the Float class.

  The constructor for these classes takes a string as an argument if you
want, and then converts it into a int or float.  

  For instance you could do something like..

   Integer Field1_int=new Integer(fieldOne.getText());
   
   then, the Integer class has plenty of utility functions to play with
that integer.

   As far as the currency, 55.55 is a float and shouldn't be used with
an int.  

   If you pass "55.55" to the Integer constructor, I believe it should
throw a NumberFormatException.  You could then catch that and tell the 
user to enter an int and not a float, or something along those lines.

hope this helps,
Clint Brewer