@Override
  public void replace(
      DocumentFilter.FilterBypass filterBypass,
      int offset,
      int length,
      String text,
      AttributeSet attributeSet)
      throws BadLocationException {
    text = trimHexadecimal(text);
    Document document = filterBypass.getDocument();
    StringBuilder stringBuilder = new StringBuilder();
    stringBuilder.append(document.getText(0, document.getLength()));
    stringBuilder.insert(offset, text);

    if (isValidInput(stringBuilder.toString(), length)) {
      super.replace(filterBypass, offset, length, text, attributeSet);
    } else {
      Toolkit.getDefaultToolkit().beep();
    }
  }
Beispiel #2
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    @Override
    public void replace(
        DocumentFilter.FilterBypass fp, int offset, int length, String string, AttributeSet aset)
        throws BadLocationException {
      Document doc = fp.getDocument();
      String oldText = doc.getText(0, doc.getLength());
      StringBuilder sb = new StringBuilder(oldText);
      sb.replace(offset, offset + length, oldText);

      int len = string.length();
      boolean isValidInteger = true;

      for (int i = 0; i < len; i++) {
        if (!Character.isDigit(string.charAt(i))) {
          isValidInteger = false;
          break;
        }
      }
      if (isValidInteger && verifyText(sb.toString())) {
        super.replace(fp, offset, length, string, aset);
      } else Toolkit.getDefaultToolkit().beep();
    }