Java tutorial
import java.awt.BorderLayout; import java.awt.Container; import javax.swing.JButton; import javax.swing.JFrame; public class ButtonTipTest { public static void main(String args[]) { JFrame frame = new JFrame("Tool Tips"); Container contentPane = frame.getContentPane(); JButton b = new JButton("Button"); b.setToolTipText("Go Away"); contentPane.add(b, BorderLayout.NORTH); frame.setSize(300, 200); frame.show(); } }