keyListener problem is there like a VK_KeySet or something

[searcher]

txtField is just a field....
txtField.addKeyListener(new KeyListener()
{
public void keyTyped(KeyEvent e)
{
if (e.getKeyChar() == KeyEvent.VK_1|| e.getKeyChar() == KeyEvent.VK_2)
{
String me = txtField.getText();
String me2 = me.substring(0, me.length()-1);
txtField.setText(me2);
}
}
public void keyReleased(KeyEvent e) {}
public void keyPressed(KeyEvent e) {}
});

my question is this is there a set i can use in my if statement instead of tiping the whole alphabet
e.getKeyChar() == KeyEvent.VK_A || ... KeyEvent.VK_B || ...
and so on to Z
that i can compare something like this e.getKeyChar() == KeyEvent.VK_ALLALPHABET or something
basically i want the listener to check if the input is a small letter and if its not a small letter it shud remove the last letter inputted in the txtField.
then the substring doesnt work it doesent remove the unwanted char eg
i tipe abcd then i tipe 1 instead of removing the 1 it changes the last tiped letter in this case d to 1
thus the output i wanted shud be abcd when i tipe abcd1 but it outputs abc1

can anyone solve these 2 problems please

[KevinWorkman]

Please do not post multiple copies of the same question. I've deleted your duplicate threads.

[searcher]

Thanx i tried to remove the one but culdn't the reason for my second post was the 1st one had a spelling error in the title

[JosAH]

The values KeyEvent.VK_A ... KeyEvent.VK_Z are consecutive values (read the API documentation), so:

if (code >= KeyEvent.VK_A && code <= KeyEvent.VK_Z)
   // a letter was typed ...

kind regards,

Jos

[searcher]

thanks alot that helped now i get this exception Exception in thread "AWT-EventQueue-0" java.lang.StringIndexOutOfBoundsException: String index out of range: -1
if (e.getKeyChar() >= KeyEvent.VK_A && e.getKeyChar() <= KeyEvent.VK_Z)
and
if (e.getKeyCode() >= KeyEvent.VK_A && e.getKeyCode() <= KeyEvent.VK_Z)
both throw this exception

[searcher]

also can i say
if (code <= KeyEvent.VK_A && code >= KeyEvent.VK_Z)
// a letter was not typed ...

Is my logic right here

[JosAH]

also can i say
if (code <= KeyEvent.VK_A && code >= KeyEvent.VK_Z)
// a letter was not typed ...

Is my logic right here

Nope, better make that:

if (!(code >= KeyEvent.VK_A && code <= KeyEvent.VK_Z))

or, if you know your logic rules:

if (code < KeyEvent.VK_A || code > KeyEvent.VK_Z)

kind regards,

Jos

[searcher]

thanks alot Jos for all the help i actually know the logic rules but its been such a long day of coding my brain is worn anyho still much apreciated

kind regards,

Searcher

[DarrylBurke]

basically i want the listener to check if the input is a small letter and if its not a small letter it shud remove the last letter inputted in the txtField.

That's a job for a DocumentFilter, not a KeyListener.

db