CSE8B/CSE 11: Reference Sheet for Final Exam Spring 2001
READ THIS -- VERY IMPORTANT!
These are fragments of code to jar your memory for spelling and some details about parameters. They are not complete and not sufficient models if you do not know the material. Statements like "but I did it like on the reference sheet" will not get you more points when appealing a grade.

A Sample Class Definition:
public class PetRecord
{
    private String name;
    private int age;//in years
    private double weight;//in pounds

    public void writeOutput()
    {
        System.out.println("Name: " + name);
        System.out.println("Age: " + age + " years");
        System.out.println("Weight: " + weight + " pounds");
    }

    public PetRecord(String initialName, int initialAge,
                                    double initialWeight)
    {
        name = initialName;
        if ((initialAge < 0) || (initialWeight < 0))
        {
            System.out.println("Error: Negative age or weight.");
            System.exit(0);
        }
        else
        {
            age = initialAge;
            weight = initialWeight;
        }
    }

    public void set(String newName, int newAge, double newWeight)
    {
        name = newName;
        if ((newAge < 0) || (newWeight < 0))
        {
            System.out.println("Error: Negative age or weight.");
            System.exit(0);
        }
        else
        {
            age = newAge;
            weight = newWeight;
        }
    }

    public PetRecord(String initialName)
    {
        name = initialName;
        age = 0;
        weight = 0;
    }

    public void set(String newName)
    {
        name = newName;
    }

    public PetRecord(int initialAge)
    {
        name = "No name yet.";
        weight = 0;
        if (initialAge < 0)
        {
            System.out.println("Error: Negative age.");
            System.exit(0);
        }
        else
            age = initialAge;
    }

    public void set(int newAge)
    {
        if (newAge < 0)
        {
            System.out.println("Error: Negative age.");
            System.exit(0);
        }
        else
            age = newAge;
        file://name and weight are unchanged.
    }

    public PetRecord(double initialWeight)
    {
        name = "No name yet";
        age = 0;
        if (initialWeight < 0)
        {
            System.out.println("Error: Negative weight.");
            System.exit(0);
        }
        else
            weight = initialWeight;
    }

    public void set(double newWeight)
    {
        if (newWeight < 0)
        {
            System.out.println("Error: Negative weight.");
            System.exit(0);
        }
        else
            weight = newWeight; file://name and age are unchanged.
    }

    public PetRecord()
    {
        name = "No name yet.";
        age = 0;
        weight = 0;
    }

    public String getName()
    {
        return name;
    }

    public int getAge()
    {
        return age;
    }

    public double getWeight()
    {
        return weight;
    }
}

File I/O:
PrintWriter outputStream =
         new PrintWriter(new FileOutputStream("out.txt"));
PrintWriter outputStream =
     new PrintWriter(new FileOutputStream("out.txt", true));
BufferedReader inputStream =
            new BufferedReader(new FileReader("data.txt"));
DataOutputStream myOutputStream =
    new DataOutputStream(new FileOutputStream("myfile.dat"));
DataOutputStream outputStream =
    new DataOutputStream(
                new FileOutputStream("numbers.dat", true));
DataInputStream myInputStream =
     new DataInputStream(new FileInputStream("myfile.dat"));
File fileObject = new File("treasure.dat");
writeUTF
readUTF

Listeners:
public void actionPerformed(ActionEvent e)

public void windowOpened(WindowEvent e)
public void windowClosing(WindowEvent e)
public void windowClosed(WindowEvent e)
public void windowIconified(WindowEvent e)
public void windowDeiconified(WindowEvent e)
public void windowActivated(WindowEvent e)
public void windowDeactivated(WindowEvent e)

Menus:
JMenuItem m;
m = new JMenuItem("Save Memo 1");
m.addActionListener(this);
memoMenu.add(m);
mBar.add(memoMenu);
setJMenuBar(mBar);

Icons:
JButton helloButton = new JButton("Hello");
ImageIcon dukeWavingIcon = new ImageIcon("duke_waving.gif");
helloButton.setIcon(dukeWavingIcon);

Scroll Bars
JTextArea theText = new JTextArea(LINES, CHAR_PER_LINE);
JScrollPane scrolledText = new JScrollPane(theText);
textPanel.add(scrolledText);
contentPane.add(textPanel, BorderLayout.CENTER);

Borders:
public class BorderDemo extends JFrame implements ActionListener
{
    private JTextField name;

    public BorderDemo()
    {
        Container content = getContentPane();
        content.setLayout(new GridLayout(2, 1));

        JPanel namePanel = new JPanel();
        namePanel.setLayout(new BorderLayout());

        name = new JTextField(20);
        name.setBorder(new EtchedBorder(Color.green, Color.blue));
        namePanel.add(name, BorderLayout.SOUTH);
        JLabel nameLabel = new JLabel("Enter your name here:");
        nameLabel.setBorder(new EmptyBorder(20, 10, 0, 0));
        namePanel.add(nameLabel, BorderLayout.CENTER);

        namePanel.setBorder(new LineBorder(Color.black, 10));
        content.add(namePanel);

        JPanel buttonPanel = new JPanel();
        buttonPanel.setLayout(new FlowLayout());
        JButton testButton = new JButton("Test");
        testButton.addActionListener(this);
        testButton.setBorder(
                new BevelBorder(BevelBorder.LOWERED));
        buttonPanel.add(testButton);

        JButton clearButton = new JButton("Clear");
        clearButton.addActionListener(this);
        clearButton.setBorder(
                 new BevelBorder(BevelBorder.RAISED));
        buttonPanel.add(clearButton);

        buttonPanel.setBorder(
                new MatteBorder(60, 40, 30, 20, Color.pink));
        content.add(buttonPanel);
    }

Look and Feel:
try
{
    UIManager.setLookAndFeel(Look_And_Feel_Class_Name);
    SwingUtilities.updateComponentTreeUI(this);
}
catch (Exception e)
{//You might use a more explicit error message:
    System.out.println("Could not load the desired look and feel");
}

"javax.swing.plaf.metal.MetalLookAndFeel"
"com.sun.java.swing.plaf.motif.MotifLookAndFeel"
"com.sun.java.swing.plaf.windows.WindowsLookAndFeel"

Box Layout
verticalPanel.setLayout(
         new BoxLayout(verticalPanel, BoxLayout.Y_AXIS));
Component horizontalStrut =
         Box.createHorizontalStrut(HORIZONTAL_STRUT_SIZE);
Box horizontalBox = new Box(BoxLayout.X_AXIS);
Box horizontalBox = Box.createHorizontalBox();

The CardLayout Manager:
deckPanel = new JPanel();
dealer = new CardLayout();
deckPanel.setLayout(dealer);
deckPanel.add("start", startCardPanel);
deckPanel.add("red", redCardPanel);
dealer.show(deckPanel, "red");

Programming the Close Window Button:
x.setDefaultCloseOperation(
                    WindowConstants.DO_NOTHING_ON_CLOSE);
x is a JFrame.