Example #1
1
    @Override
    public void insertString(
        DocumentFilter.FilterBypass fp, int offset, String string, AttributeSet aset)
        throws BadLocationException {

      Document doc = fp.getDocument();
      String oldText = doc.getText(0, doc.getLength());
      StringBuilder sb = new StringBuilder(oldText);
      sb.insert(offset, string);

      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.insertString(fp, offset, string, aset);
      else Toolkit.getDefaultToolkit().beep();
    }
  @Override
  public void insertString(
      FilterBypass filterBypass, int offset, 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(), 0)) {
      super.insertString(filterBypass, offset, text, attributeSet);
    } else {
      Toolkit.getDefaultToolkit().beep();
    }
  }