Set tooltip for button in Java

     /* w  ww. ja v a2 s .c o  m*/

import javax.swing.JButton;
import javax.swing.JFrame;

public class Main extends JFrame {
  public Main() {
    setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    
    JButton b = new JButton("Test");
    b.setToolTipText("Help text for the button");

    add(b);
    pack();
  }

  public static void main(String[] args) {
    new Main().setVisible(true);
  }
}