The second midterm will have some questions that require a small amount
of knowledge of swing classes used to make guis.

The following is a summary of classes and methods that you should be
able to use.  All of these appear in Chapter 13 of the text.
Figure 13.10 is a useful summary to describe these classes and the inheritance
of methods between them.

class Container, setBackground, setLayout

method:  add

class JComponent

method: addActionListener

class JPanel

class JFrame

methods:  getContentPane, setSize, addWindowListener, setVisible, 
setDefaultCloseOperation, setTitle, 

class JLabel

methods:  

class WindowAdapter

method: windowClosing

class Color

classes FlowLayout, BorderLayout, GrodLayout

interface ActionListener

method:  actionPerformed

class ActionEvent

method: getActionCommand

classes JTextArea, JTextField

methods: getText, setText