How can you set a TextArea in JavaFX to allow only integers to be entered? -

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• numeric textfield integers in javafx 8 textformatter and/or unaryoperator 2 answers

i trying create textarea in javafx accepts integer values? can give me advice how implement this?

use textformatter:

textarea textarea = new textarea(); // allow digits , whitespace: pattern allowedtext = pattern.compile("[0-9\\s]*"); textformatter formatter = new textformatter((textformatter.change c) -> {     if (allowedtext.matcher(c.gettext()).matches()) {         return c ;     } else {         return null ;     } });