Ampersand (&) is not shown on tooltips in Eclipse

To show '&' as part of tooltip information, You need to follow the rules of doubling an ampersand when you want a single ampersand for tool tip text.  All platforms follow this rule and strip out the underscore.

Example:
String tooltip = "Hello & World"; => Hello && World"

Look at the code below.

import org.eclipse.jface.window.DefaultToolTip;
import org.eclipse.swt.widgets.Control;
import org.eclipse.swt.widgets.Event;


public class MyToolTip extends DefaultToolTip {

public MyToolTip(Control control) {
super(control);
}

@Override
protected String getText(Event event) {
int x = event.x;
int y = event.y;

String tooltip = "Hello & World"; //only for test
//TODO: build tooltip info here.
if (tooltip.contains("&")) {
tooltip = tooltip.replace("&", "&&"); //without double ampersand replacement tooltip info will be shown as 'Hello _World' by replacing & by _.
}
return tooltip;
}
}