🚀 go-pugleaf

Michel P�rez <mperez@eurobanco.com> skrev i
diskussionsgruppsmeddelandet:7sofk2$g0818@forums.borland.com...
> I have just tried this way, but I'm not too clear.
>

Try this:

public class MyField extends JTextField {
    int maxLength=10; // You should probably have get/set for this
    protected Document createDefaultModel() {
        return new MyDocument();
    }
    class MyDocument extends PlainDocument {
        public void insertString(int offs, String str, AttributeSet a)
               throws BadLocationException {
            if (maxlength>0) {
                int len=getText().length(), len2=str.length();
                if (len+len2>maxlength) {
                    len2 = len2+maxlength-len2-len;
                    if (len2<=0)
                        return;
                    // Chop!
                    str=str.substring(0, len2);
                }
            }
            super.insertString(offs, str, a);
        }
    }
}