Display underlined text

import java.applet.*;
import java.awt.*;

public class underlineText extends Applet{
  String s = "Underlined text";
  int x=10; 
  int y=10;

public void init() {}

public void paint(Graphics g) {
  g.drawString(s, x,y);
  g.drawLine(x , y+2 , x+getFontMetrics(getFont()).stringWidth(s) , y+2 );
  }
}

Check this How-to for underlined text with a Label component.
Check this How-to for underlined text in Swing.