JTextfield For Digits Only

Subclass PlainDocument, then set the document of the JTextfield to the subclass as shown below:

 JTextField myJTextfield;myJTextfield.setDocument(new DigitsDocument());class DigitsDocument extends PlainDocument {         	public void insertString(int offs, String str, AttributeSet a)throws BadLocationException {                 	if (str == null) {                     		 return;                  	}                  	char[] addedFigures = str.toCharArray();			char c;                  	for (int i = addedFigures.length; i > 0; i--) {				c = addedFigures[i-1];				if(Character.isDigit(c)){					//System.out.println(





 Charlie Frank
Charlie has over a decade of experience in website administration and technology management. As the site admin, he oversees all technical aspects of running a high-traffic online platform, ensuring optimal performance, security, and user experience.
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