Java question

[TGH]

Hello,

I'm new to the JAVA programming world and I have a few question.

I want to make a program that translates numbers in words.
Example:

You typ in: 580
It comes out in words: five hundred eighty

My question is how to split these numbers, because I have an array filled with numbers comes from the words. But I have to make JAVA split 580 in 500 and 80, or a 5 and 8 because in the array it is saved as those numbers...

[PhHein]

Threre are different possibilities (as usual). If 580 is a String you can use the split() or subString() methods to get the single digits. If it's an int you can hack around with modulo(%) and integer division.

[TGH]

Yes, it is a String...
Can you tell me how the Split or the Substring work in this case?

[PhHein]

What part of the API doc didn't you understand?

[masijade]

What part of the API doc didn't you understand?

That you should actually read it, maybe? That it actually has a purpose, maybe?

[TGH]

Well, how to do it in this case, I think that te API documents is very confusing for beginners..

[PhHein]

That you should actually read it, maybe? That it actually has a purpose, maybe?

What, why, since when? :confused:

[PhHein]

Well, how to do it in this case, I think that te API documents is very confusing for beginners..

Ok, what have you tried and what went wrong?

[TGH]

OK,

I have everythinking accept for the actionPerformed.
First I thought that Integer.parseInt could work but then I got stuck at the array point, I couldnt get the Integer get split.
Now I wanted to work with the Substring, but I haven't got any Idea how to do it, because if I want to get the numbers working with the array's you must get integers back right.

Here is some of my code:

String[] klein = {"nul", "een", "twee", "drie", "vier", "vijf", "zes", "zeven", "acht", "negen", "tien", "elf", "twaalf", "dertien", "veertien", "vijftien", "zestien", "zeventien", "achttien", "negentien"};
String[] groot = {"nul", "tien", "twintig", "dertig", "veertig", "vijftig", "zestig", "zeventig", "tachtig", "negentig"};

public void actionPerformed(ActionEvent e)
{
int nr = Integer.parseInt(invoerVeld.getText());
if(nr<100)
{
//?????? must split my Integer at this point
//88 for example is groot[8] and klein[8]

if(nr<20)
{
uitvoerVeld.setText(klein[nr]);
}
}


}

I get stuck at the ActionPerformed method...

[PhHein]

ok, so you've got an integer:

int k = 0;
int g = 0;
if(nr<20)
{
  uitvoerVeld.setText(klein[nr]);
}else{
  k = nr%10;
  g = (nr - k)/10;
  uitvoerVeld.setText(groot[g] + klein[k]);
}

Something like that, it's untested.

[TGH]

Yes, Thank you
I can work futher with this assignment, Its stupid that I didn't saw that earlier.

[TGH]

I have a new question,

How can you put more buttons in the BorderLayout"?
I want to put three buttons there, one to make something smaller, a button that makes that something go down and a button to make it bigger...

How can I do it?

(Now I only get 1 button, bigger or smaller or the 'go down' button...)

[JosAH]

I have a new question,

How can you put more buttons in the BorderLayout"?
I want to put three buttons there, one to make something smaller, a button that makes that something go down and a button to make it bigger...

How can I do it?

(Now I only get 1 button, bigger or smaller or the 'go down' button...)

You have to think of 'layered' components, say a JPanel with a FlowLayout that stores three buttons; that panel is stored as the 'south' component in another JComponent (also a JPanel?) with a BorderLayout etc.

kind regards,

Jos