swing - Accept only numbers and a dot in Java TextField -

i've got 1 textfield accept numbers keyboard, have change it's "price textfield" , need accept dot "." kind of prices.

how can change in order need?

ptominimofield = new jtextfield();         ptominimofield.setbounds(348, 177, 167, 20);         contentpanel.add(ptominimofield);         ptominimofield.setcolumns(10);         ptominimofield.addkeylistener(new keyadapter() {             public void keytyped(keyevent e) {                 char caracter = e.getkeychar();                 if (((caracter < '0') || (caracter > '9'))                         && (caracter != '\b')) {                     e.consume();                 }             }         }); 

as suggested oracle ,use formatted text fields

formatted text fields provide way developers specify valid set of characters can typed in text field.

amountformat = numberformat.getnumberinstance(); ... amountfield = new jformattedtextfield(amountformat); amountfield.setvalue(new double(amount)); amountfield.setcolumns(10); amountfield.addpropertychangelistener("value", this);