Validate a textfield

[short tapir]

I want a textfield only to take only letters as input and no numbers. Also i have to use a input verifier how can i achieve that? i have only found on docs on how to verify for a specific word... Also since JTextfield only takes strings i dont know how to make it only accept letters and no numbers.

public class verfifyForLetterOnly extends InputVerifier {

    @Override
    public boolean verify(JComponent input) {
        JTextField tf = (JTextField) input;
        if (    ) {
            
        }
        return ;
        
    }

}

[rotund hinge]

Detected code, here are some useful tools:

Formatted code

public class verfifyForLetterOnly extends InputVerifier {
  @Override
  public boolean verify(JComponent input) {
    JTextField tf = (JTextField) input;
    if () {
    }
    return ;
  }
}

<@&987246487241105418> please have a look, thanks.

[rotund hinge]

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[winter sage]

I would use a DocumentFilter but I don't know if that is the best way to do it.

[celest tinsel]

i would just place a regex on the check or ( depending on the gui ), set the limits