Creating NUM_ONLY Text Field using Eclipse SWT

While working on a wizard, I needed to use text fields that accept only numbers. Following is a snippet of what I used. This text field will only accept digits as input. All other inputs (barring a few) are discarded.
<br />/* <br /> * Specific to Eclipse SWT.<br /> * Related packages<br /> * - org.eclipse.swt.widgets.Text<br /> * - org.eclipse.swt.events.VerifyListener<br /> * - org.eclipse.swt.events.VerifyEvent<br /> * - org.eclipse.swt.SWT<br /> */<br /><br />final Text text = new Text(parent, SWT.SINGLE | SWT.BORDER); // use desired style<br />// Use text.setTextLimit(...) to set a limit on number of digits<br /><br />/*<br /> * You need to use Verify Listener.<br /> * Key Listener will not block Paste actions, and users may still be able to<br /> * paste non numerals in the text field<br /> */<br />text.addVerifyListener(new VerifyListener() {<br /><br /> @Override<br /> public void verifyText(final VerifyEvent event) {<br /> switch (event.keyCode) {<br /> case SWT.BS: // Backspace<br /> case SWT.DEL: // Delete<br /> case SWT.HOME: // Home<br /> case SWT.END: // End<br /> case SWT.ARROW_LEFT: // Left arrow<br /> case SWT.ARROW_RIGHT: // Right arrow<br /> return;<br /> }<br /><br /> if (!Character.isDigit(event.character)) {<br /> event.doit = false; // disallow the action<br /> }<br /> }<br /><br />});<br />