22. Tool Tips

• A tool tip helps to understand the purpose of component on the input form

• Tool tips appear when a user hovers the mouse over the component

  
      // Create frame
      // ...
      // Add button and set font:
      JButton button = new JButton( "Hello" );
      button.setToolTipText( "tool tip text goes here" );
      frame.getContentPane().add( button );
      frame.setVisible( true );