Program

java.lang.Object
- java.awt.Component
- - java.awt.Container
  - - java.awt.Panel
    - - java.applet.Applet
      - javax.swing.JApplet
        
        acm.program.Program

All Implemented Interfaces:

IOModel, java.awt.event.ActionListener, java.awt.event.KeyListener, java.awt.event.MouseListener, java.awt.event.MouseMotionListener, java.awt.image.ImageObserver, java.awt.MenuContainer, java.io.Serializable, java.lang.Runnable, java.util.EventListener, javax.accessibility.Accessible, javax.swing.RootPaneContainer

Direct Known Subclasses:

ConsoleProgram, DialogProgram, GraphicsProgram
```
public abstract class Program
extends javax.swing.JApplet
implements IOModel, java.lang.Runnable, java.awt.event.MouseListener, java.awt.event.MouseMotionListener, java.awt.event.KeyListener, java.awt.event.ActionListener
```
This class is the superclass for all executable programs in the acm.program package. Its principal role is to unify the concepts of applets and applications in a single class, although it also provides applications with many other useful facilities not traditionally available in applications.
In many programming environments, objects that are specific instances of a Program subclass will run automatically without any special action on your part. For maximum portability, you might want to define a static main method as described in the comments for the standard implementation of main.

See Also:
Serialized Form

Nested Class Summary
- Nested classes/interfaces inherited from class java.awt.Component
  java.awt.Component.BaselineResizeBehavior

Field Summary

Fields
Modifier and Type	Field and Description
`static java.lang.String`	`CENTER` Constant specifying the center of the container
`static java.lang.String`	`EAST` Constant specifying the east edge of the container
`static java.lang.String`	`NORTH` Constant specifying the north edge of the container
`static java.lang.String`	`SOUTH` Constant specifying the south edge of the container
`static java.lang.String`	`WEST` Constant specifying the west edge of the container

Fields inherited from class java.awt.Component
BOTTOM_ALIGNMENT, CENTER_ALIGNMENT, LEFT_ALIGNMENT, RIGHT_ALIGNMENT, TOP_ALIGNMENT

Fields inherited from interface java.awt.image.ImageObserver
ABORT, ALLBITS, ERROR, FRAMEBITS, HEIGHT, PROPERTIES, SOMEBITS, WIDTH

Method Summary

Methods
Modifier and Type	Method and Description
`void`	`actionPerformed(java.awt.event.ActionEvent e)` Called when a component (typically a button) is activated.
`void`	`add(java.awt.Component comp, java.lang.String region, java.lang.Object constraints)` Adds the component to the specified border region with the indicated constraints object.
`void`	`addActionListeners()` Adds the program as an `ActionListener` to every button in the structure that does not have a listener already.
`void`	`addActionListeners(java.awt.event.ActionListener listener)` Adds the specified listener to every button in the structure that does not have a listener already.
`void`	`addExitHook(java.lang.Object obj)` Requests that the program call the `exit` method in the specified object before exiting.
`void`	`destroy()` Called when the program has been told to destroy itself.
`void`	`exit()` Exits from the program.
`IOConsole`	`getConsole()` Returns the console associated with this program.
`IODialog`	`getDialog()` Returns the dialog used for user interaction.
`int`	`getHeight()` Returns the height of the central region.
`IOModel`	`getInputModel()` Returns the `IOModel` used for program input, which will typically be either the default `IOConsole` or `IODialog` object.
`java.awt.LayoutManager`	`getLayout()` Gets the layout manager for the central region of the content pane.
`ProgramMenuBar`	`getMenuBar()` Returns the menu bar associated with this program.
`IOModel`	`getOutputModel()` Returns the `IOModel` used for program output, which will typically be either the default `IOConsole` or `IODialog` object.
`java.lang.String`	`getParameter(java.lang.String name)` Returns the parameter associated with name.
`java.awt.Dimension`	`getPreferredSize()` Returns the preferred size of the content pane.
`java.io.BufferedReader`	`getReader()` Returns a `BufferedReader` whose input comes from the console.
`javax.swing.JPanel`	`getRegionPanel(java.lang.String region)` Gets the `JPanel` for the specified region.
`java.lang.String`	`getTitle()` Gets the title of this program.
`int`	`getWidth()` Returns the width of the central region.
`java.io.PrintWriter`	`getWriter()` Returns a `PrintWriter` whose output is directed to the console.
`void`	`init()` The init method is called at startup time before the run method is called.
`boolean`	`isAppletMode()` Returns `true` if this program is running as an applet in a browser.
`void`	`keyPressed(java.awt.event.KeyEvent e)` Called when a key is pressed.
`void`	`keyReleased(java.awt.event.KeyEvent e)` Called when a key is released.
`void`	`keyTyped(java.awt.event.KeyEvent e)` Called when a key is typed (i.e., pressed and released).
`static void`	`main(java.lang.String[] args)` Every application must either contain a "Main-Class" entry in its manifest file or include a main method that looks like this, where `MyClass` is the name of the program class:
`void`	`menuAction(java.lang.String cmd)` Called whenever an action event is detected in the menu bar.
`void`	`mouseClicked(java.awt.event.MouseEvent e)` Called when the mouse is clicked.
`void`	`mouseDragged(java.awt.event.MouseEvent e)` Called when the mouse is dragged with the button down.
`void`	`mouseEntered(java.awt.event.MouseEvent e)` Called when the mouse enters the source (which may be either a component or a `GObject`).
`void`	`mouseExited(java.awt.event.MouseEvent e)` Called when the mouse exits the source (which may be either a component or a `GObject`).
`void`	`mouseMoved(java.awt.event.MouseEvent e)` Called when the mouse is moved.
`void`	`mousePressed(java.awt.event.MouseEvent e)` Called when the mouse button is pressed.
`void`	`mouseReleased(java.awt.event.MouseEvent e)` Called when the mouse button is released.
`void`	`pause(double milliseconds)` Delays the calling thread for the specified time, which is expressed in milliseconds.
`void`	`print(boolean x)` Makes sure that `print` can display a `boolean`.
`void`	`print(char x)` Makes sure that `print` can display a `char`.
`void`	`print(double x)` Makes sure that `print` can display a `double`.
`void`	`print(float x)` Makes sure that `print` can display a `float`.
`void`	`print(int x)` Makes sure that `print` can display an `int`.
`void`	`print(long x)` Makes sure that `print` can display a `long`.
`void`	`print(java.lang.Object x)` Makes sure that `print` can display an `Object`.
`void`	`print(java.lang.String value)` Displays the argument value on the console, leaving the cursor at the end of the output.
`void`	`println()` Advances the console cursor to the beginning of the next line.
`void`	`println(boolean x)` Makes sure that `println` can display a `boolean`.
`void`	`println(char x)` Makes sure that `println` can display a `char`.
`void`	`println(double x)` Makes sure that `println` can display a `double`.
`void`	`println(float x)` Makes sure that `println` can display a `float`.
`void`	`println(int x)` Makes sure that `println` can display an `int`.
`void`	`println(long x)` Makes sure that `println` can display a `long`.
`void`	`println(java.lang.Object x)` Makes sure that `println` can display an `Object`.
`void`	`println(java.lang.String value)` Displays the argument value on the console and then advances the cursor to the beginning of the next line.
`boolean`	`readBoolean()` Reads and returns a boolean value (`true` or `false`).
`boolean`	`readBoolean(java.lang.String prompt)` Prompts the user to enter a boolean value, which is returned as the value of this method.
`boolean`	`readBoolean(java.lang.String prompt, java.lang.String trueLabel, java.lang.String falseLabel)` Prompts the user to enter a boolean value, which is matched against the labels provided.
`double`	`readDouble()` Reads and returns a double-precision value from the user.
`double`	`readDouble(double low, double high)` Reads and returns a double-precision value from the user, which is constrained to be within the specified inclusive range.
`double`	`readDouble(java.lang.String prompt)` Prompts the user to enter an double-precision number, which is then returned as the value of this method.
`double`	`readDouble(java.lang.String prompt, double low, double high)` Prompts the user to enter an double-precision number, which is then returned as the value of this method.
`int`	`readInt()` Reads and returns an integer value from the user.
`int`	`readInt(int low, int high)` Reads and returns an integer value from the user, which is constrained to be within the specified inclusive range.
`int`	`readInt(java.lang.String prompt)` Prompts the user to enter an integer, which is then returned as the value of this method.
`int`	`readInt(java.lang.String prompt, int low, int high)` Prompts the user to enter an integer, which is then returned as the value of this method.
`java.lang.String`	`readLine()` Reads and returns a line of input from the console.
`java.lang.String`	`readLine(java.lang.String prompt)` Prompts the user for a line of input.
`void`	`remove(java.awt.Component comp)` Removes the specified component from the central region.
`void`	`remove(int index)` Removes the component at the specified index from the central region.
`void`	`removeAll()` Removes all components from the central region.
`void`	`repaint()` Forwards repaint to the content pane.
`void`	`run()` Contains the code to be executed for each specific program subclass.
`void`	`setBackground(java.awt.Color color)` Sets the background for the central region of the content pane.
`void`	`setConsole(IOConsole console)` Sets the console associated with this program.
`void`	`setLayout(java.awt.LayoutManager layout)` Sets the layout manager for the central region of the content pane.
`void`	`setTitle(java.lang.String title)` Sets the title of this program.
`void`	`showErrorMessage(java.lang.String msg)` Displays the error message in the standard output model.
`void`	`start()` Starts the program when it is running in application mode.
`void`	`start(java.lang.String[] args)` Starts the program using the specified argument list.
`void`	`validate()` Forwards validate to the content pane.

Methods inherited from class javax.swing.JApplet
getAccessibleContext, getContentPane, getGlassPane, getGraphics, getJMenuBar, getLayeredPane, getRootPane, getTransferHandler, repaint, setContentPane, setGlassPane, setJMenuBar, setLayeredPane, setTransferHandler, update

Methods inherited from class java.applet.Applet
getAppletContext, getAppletInfo, getAudioClip, getAudioClip, getCodeBase, getDocumentBase, getImage, getImage, getLocale, getParameterInfo, isActive, isValidateRoot, newAudioClip, play, play, resize, resize, setStub, showStatus, stop

Methods inherited from class java.awt.Panel
addNotify

Methods inherited from class java.awt.Container
add, add, add, add, add, addContainerListener, addPropertyChangeListener, addPropertyChangeListener, applyComponentOrientation, areFocusTraversalKeysSet, countComponents, deliverEvent, doLayout, findComponentAt, findComponentAt, getAlignmentX, getAlignmentY, getComponent, getComponentAt, getComponentAt, getComponentCount, getComponents, getComponentZOrder, getContainerListeners, getFocusTraversalKeys, getFocusTraversalPolicy, getInsets, getListeners, getMaximumSize, getMinimumSize, getMousePosition, insets, invalidate, isAncestorOf, isFocusCycleRoot, isFocusCycleRoot, isFocusTraversalPolicyProvider, isFocusTraversalPolicySet, layout, list, list, locate, minimumSize, paint, paintComponents, preferredSize, print, printComponents, removeContainerListener, removeNotify, setComponentZOrder, setFocusCycleRoot, setFocusTraversalKeys, setFocusTraversalPolicy, setFocusTraversalPolicyProvider, setFont, transferFocusDownCycle

Methods inherited from class java.awt.Component
action, add, addComponentListener, addFocusListener, addHierarchyBoundsListener, addHierarchyListener, addInputMethodListener, addKeyListener, addMouseListener, addMouseMotionListener, addMouseWheelListener, bounds, checkImage, checkImage, contains, contains, createImage, createImage, createVolatileImage, createVolatileImage, disable, dispatchEvent, enable, enable, enableInputMethods, firePropertyChange, firePropertyChange, firePropertyChange, firePropertyChange, firePropertyChange, firePropertyChange, getBackground, getBaseline, getBaselineResizeBehavior, getBounds, getBounds, getColorModel, getComponentListeners, getComponentOrientation, getCursor, getDropTarget, getFocusCycleRootAncestor, getFocusListeners, getFocusTraversalKeysEnabled, getFont, getFontMetrics, getForeground, getGraphicsConfiguration, getHierarchyBoundsListeners, getHierarchyListeners, getIgnoreRepaint, getInputContext, getInputMethodListeners, getInputMethodRequests, getKeyListeners, getLocation, getLocation, getLocationOnScreen, getMouseListeners, getMouseMotionListeners, getMousePosition, getMouseWheelListeners, getName, getParent, getPeer, getPropertyChangeListeners, getPropertyChangeListeners, getSize, getSize, getToolkit, getTreeLock, getX, getY, gotFocus, handleEvent, hasFocus, hide, imageUpdate, inside, isBackgroundSet, isCursorSet, isDisplayable, isDoubleBuffered, isEnabled, isFocusable, isFocusOwner, isFocusTraversable, isFontSet, isForegroundSet, isLightweight, isMaximumSizeSet, isMinimumSizeSet, isOpaque, isPreferredSizeSet, isShowing, isValid, isVisible, keyDown, keyUp, list, list, list, location, lostFocus, mouseDown, mouseDrag, mouseEnter, mouseExit, mouseMove, mouseUp, move, nextFocus, paintAll, postEvent, prepareImage, prepareImage, printAll, remove, removeComponentListener, removeFocusListener, removeHierarchyBoundsListener, removeHierarchyListener, removeInputMethodListener, removeKeyListener, removeMouseListener, removeMouseMotionListener, removeMouseWheelListener, removePropertyChangeListener, removePropertyChangeListener, repaint, repaint, requestFocus, requestFocusInWindow, reshape, revalidate, setBounds, setBounds, setComponentOrientation, setCursor, setDropTarget, setEnabled, setFocusable, setFocusTraversalKeysEnabled, setForeground, setIgnoreRepaint, setLocale, setLocation, setLocation, setMaximumSize, setMinimumSize, setName, setPreferredSize, setSize, setSize, setVisible, show, show, size, toString, transferFocus, transferFocusBackward, transferFocusUpCycle

Methods inherited from class java.lang.Object
equals, getClass, hashCode, notify, notifyAll, wait, wait, wait

- Field Detail
  - NORTH
```
public static final java.lang.String NORTH
```
    Constant specifying the north edge of the container
    
    See Also:
    Constant Field Values
  - SOUTH
```
public static final java.lang.String SOUTH
```
    Constant specifying the south edge of the container
    
    See Also:
    Constant Field Values
  - EAST
```
public static final java.lang.String EAST
```
    Constant specifying the east edge of the container
    
    See Also:
    Constant Field Values
  - WEST
```
public static final java.lang.String WEST
```
    Constant specifying the west edge of the container
    
    See Also:
    Constant Field Values
  - CENTER
```
public static final java.lang.String CENTER
```
    Constant specifying the center of the container
    
    See Also:
    Constant Field Values
- Method Detail
  - run
```
public void run()
```
    Contains the code to be executed for each specific program subclass. If you are defining your own program, you need to override the definition of run so that it contains the code for your application.
    
    Specified by:
    
    run in interface java.lang.Runnable
  - init
```
public void init()
```
    The init method is called at startup time before the run method is called. Subclasses can override this method to perform any initialization code that would ordinarily be included in an applet init method. This method is used only for certain styles of application development that have their roots in the applet world; other styles will not ordinarily use or override this method.
    
    Overrides:
    
    init in class java.applet.Applet
  - print
```
public void print(java.lang.String value)
```
    Displays the argument value on the console, leaving the cursor at the end of the output. The print method is overloaded so that value can be of any type.
    
    Specified by:
    
    print in interface IOModel
    
    Parameters:
    value - The value to be displayed
  - print
```
public final void print(boolean x)
```
    Makes sure that print can display a boolean.
    
    Specified by:
    
    print in interface IOModel
  - print
```
public final void print(char x)
```
    Makes sure that print can display a char.
    
    Specified by:
    
    print in interface IOModel
  - print
```
public final void print(double x)
```
    Makes sure that print can display a double.
    
    Specified by:
    
    print in interface IOModel
  - print
```
public final void print(float x)
```
    Makes sure that print can display a float.
    
    Specified by:
    
    print in interface IOModel
  - print
```
public final void print(int x)
```
    Makes sure that print can display an int.
    
    Specified by:
    
    print in interface IOModel
  - print
```
public final void print(long x)
```
    Makes sure that print can display a long.
    
    Specified by:
    
    print in interface IOModel
  - print
```
public final void print(java.lang.Object x)
```
    Makes sure that print can display an Object.
    
    Specified by:
    
    print in interface IOModel
  - println
```
public void println()
```
    Advances the console cursor to the beginning of the next line.
    
    Specified by:
    
    println in interface IOModel
  - println
```
public void println(java.lang.String value)
```
    Displays the argument value on the console and then advances the cursor to the beginning of the next line. The println method is overloaded so that value can be of any type.
    
    Specified by:
    
    println in interface IOModel
    
    Parameters:
    value - The value to be displayed
  - println
```
public final void println(boolean x)
```
    Makes sure that println can display a boolean.
    
    Specified by:
    
    println in interface IOModel
  - println
```
public final void println(char x)
```
    Makes sure that println can display a char.
    
    Specified by:
    
    println in interface IOModel
  - println
```
public final void println(double x)
```
    Makes sure that println can display a double.
    
    Specified by:
    
    println in interface IOModel
  - println
```
public final void println(float x)
```
    Makes sure that println can display a float.
    
    Specified by:
    
    println in interface IOModel
  - println
```
public final void println(int x)
```
    Makes sure that println can display an int.
    
    Specified by:
    
    println in interface IOModel
  - println
```
public final void println(long x)
```
    Makes sure that println can display a long.
    
    Specified by:
    
    println in interface IOModel
  - println
```
public final void println(java.lang.Object x)
```
    Makes sure that println can display an Object.
    
    Specified by:
    
    println in interface IOModel
  - showErrorMessage
```
public void showErrorMessage(java.lang.String msg)
```
    Displays the error message in the standard output model.
    
    Specified by:
    
    showErrorMessage in interface IOModel
    
    Parameters:
    msg - The error msg to be displayed
  - readLine
```
public final java.lang.String readLine()
```
    Reads and returns a line of input from the console. The end-of-line characters that terminate the input are not included in the returned string.
    
    Specified by:
    
    readLine in interface IOModel
    
    Returns:
    The next line of input as a String
  - readLine
```
public java.lang.String readLine(java.lang.String prompt)
```
    Prompts the user for a line of input. The end-of-line characters that terminate the input are not included in the returned string.
    
    Specified by:
    
    readLine in interface IOModel
    
    Parameters:
    prompt - The prompt string to display to the user
    
    Returns:
    The next line of input as a String
  - readInt
```
public final int readInt()
```
    Reads and returns an integer value from the user. If the user types a value that is not a legal integer, the method ordinarily offers the user a chance to reenter the data, although this behavior can be changed using the setExceptionOnError method.
    
    Specified by:
    
    readInt in interface IOModel
    
    Returns:
    The value of the input interpreted as a decimal integer
  - readInt
```
public final int readInt(int low,
          int high)
```
    Reads and returns an integer value from the user, which is constrained to be within the specified inclusive range. If the user types a value that is not a legal integer, the method ordinarily offers the user a chance to reenter the data, although this behavior can be changed using the setExceptionOnError method.
    
    Specified by:
    
    readInt in interface IOModel
    
    Parameters:
    low - The lowest value in the permitted range
    high - The highest value in the permitted range
    
    Returns:
    The value of the input interpreted as a decimal integer
  - readInt
```
public final int readInt(java.lang.String prompt)
```
    Prompts the user to enter an integer, which is then returned as the value of this method. If the user types a value that is not a legal integer, the method ordinarily offers the user a chance to reenter the data, although this behavior can be changed using the setExceptionOnError method.
    
    Specified by:
    
    readInt in interface IOModel
    
    Parameters:
    prompt - The prompt string to display to the user
    
    Returns:
    The value of the input interpreted as a decimal integer
  - readInt
```
public int readInt(java.lang.String prompt,
          int low,
          int high)
```
    Prompts the user to enter an integer, which is then returned as the value of this method. The value must be within the inclusive range between low and high. If the user types a value that is not a legal integer or is outside the specified range, the method ordinarily offers the user a chance to reenter the data, although this behavior can be changed using the setExceptionOnError method.
    
    Specified by:
    
    readInt in interface IOModel
    
    Parameters:
    prompt - The prompt string to display to the user
    low - The lowest value in the permitted range
    high - The highest value in the permitted range
    
    Returns:
    The value of the input interpreted as a decimal integer
  - readDouble
```
public final double readDouble()
```
    Reads and returns a double-precision value from the user. If the user types a value that is not a legal number, the method ordinarily offers the user a chance to reenter the data, although this behavior can be changed using the setExceptionOnError method.
    
    Specified by:
    
    readDouble in interface IOModel
    
    Returns:
    The value of the input interpreted as a double
  - readDouble
```
public final double readDouble(double low,
                double high)
```
    Reads and returns a double-precision value from the user, which is constrained to be within the specified inclusive range. If the user types a value that is not a legal number, the method ordinarily offers the user a chance to reenter the data, although this behavior can be changed using the setExceptionOnError method.
    
    Specified by:
    
    readDouble in interface IOModel
    
    Parameters:
    low - The lowest value in the permitted range
    high - The highest value in the permitted range
    
    Returns:
    The value of the input interpreted as a double
  - readDouble
```
public final double readDouble(java.lang.String prompt)
```
    Prompts the user to enter an double-precision number, which is then returned as the value of this method. If the user types a value that is not a legal number, the method ordinarily offers the user a chance to reenter the data, although this behavior can be changed using the setExceptionOnError method.
    
    Specified by:
    
    readDouble in interface IOModel
    
    Parameters:
    prompt - The prompt string to display to the user
    
    Returns:
    The value of the input interpreted as a double
  - readDouble
```
public double readDouble(java.lang.String prompt,
                double low,
                double high)
```
    Prompts the user to enter an double-precision number, which is then returned as the value of this method. The value must be within the inclusive range between low and high. If the user types a value that is not a legal number, the method ordinarily offers the user a chance to reenter the data, although this behavior can be changed using the setExceptionOnError method.
    
    Specified by:
    
    readDouble in interface IOModel
    
    Parameters:
    prompt - The prompt string to display to the user
    low - The lowest value in the permitted range
    high - The highest value in the permitted range
    
    Returns:
    The value of the input interpreted as a double
  - readBoolean
```
public final boolean readBoolean()
```
    Reads and returns a boolean value (true or false). The input must match one of these strings, ignoring case. If the user types a value that is not one of these possibilities, the method ordinarily offers the user a chance to reenter the data, although this behavior can be changed using the setExceptionOnError method.
    
    Specified by:
    
    readBoolean in interface IOModel
    
    Returns:
    The value of the input interpreted as a boolean value
  - readBoolean
```
public final boolean readBoolean(java.lang.String prompt)
```
    Prompts the user to enter a boolean value, which is returned as the value of this method. If the user types a value that is not a legal boolean value, the method ordinarily offers the user a chance to reenter the data, although this behavior can be changed using the setExceptionOnError method.
    
    Specified by:
    
    readBoolean in interface IOModel
    
    Parameters:
    prompt - The prompt string to display to the user
    
    Returns:
    The value of the input interpreted as a boolean value
  - readBoolean
```
public boolean readBoolean(java.lang.String prompt,
                  java.lang.String trueLabel,
                  java.lang.String falseLabel)
```
    Prompts the user to enter a boolean value, which is matched against the labels provided. If the user enters a value that is not one of the two choices, readBoolean ordinarily offers the user a chance to reenter the data, although this behavior can be changed using the setExceptionOnError method.
    
    Specified by:
    
    readBoolean in interface IOModel
    
    Parameters:
    prompt - The prompt string to display to the user
    trueLabel - The string used to indicate true
    falseLabel - The string used to indicate false
    
    Returns:
    The value of the input interpreted as a boolean value
  - isAppletMode
```
public boolean isAppletMode()
```
    Returns true if this program is running as an applet in a browser.
    
    Returns:
    true if this program is running as an applet, false otherwise
  - setConsole
```
public void setConsole(IOConsole console)
```
    Sets the console associated with this program.
    
    Parameters:
    console - The IOConsole object used for this program
  - getConsole
```
public IOConsole getConsole()
```
    Returns the console associated with this program.
    
    Returns:
    The IOConsole object used for this program
  - getDialog
```
public IODialog getDialog()
```
    Returns the dialog used for user interaction.
    
    Returns:
    The IODialog object used for this program
  - getInputModel
```
public IOModel getInputModel()
```
    Returns the IOModel used for program input, which will typically be either the default IOConsole or IODialog object.
    
    Returns:
    The IOModel used for program input
  - getOutputModel
```
public IOModel getOutputModel()
```
    Returns the IOModel used for program output, which will typically be either the default IOConsole or IODialog object.
    
    Returns:
    The IOModel used for program output
  - getReader
```
public java.io.BufferedReader getReader()
```
    Returns a BufferedReader whose input comes from the console.
    
    Returns:
    A Reader for use with this console
  - getWriter
```
public java.io.PrintWriter getWriter()
```
    Returns a PrintWriter whose output is directed to the console.
    
    Returns:
    A PrintWriter for use with this console
  - getRegionPanel
```
public javax.swing.JPanel getRegionPanel(java.lang.String region)
```
    Gets the JPanel for the specified region.
    
    Parameters:
    region - The region of the window (NORTH, SOUTH, EAST, WEST, or CENTER)
    
    Returns:
    The JPanel for that subregion
  - add
```
public void add(java.awt.Component comp,
       java.lang.String region,
       java.lang.Object constraints)
```
    Adds the component to the specified border region with the indicated constraints object.
    
    Parameters:
    comp - The component to be added
    region - The region of the window (NORTH, SOUTH, EAST, WEST, or CENTER)
    constraints - The constraints object
  - addActionListeners
```
public void addActionListeners()
```
    Adds the program as an ActionListener to every button in the structure that does not have a listener already.
  - addActionListeners
```
public void addActionListeners(java.awt.event.ActionListener listener)
```
    Adds the specified listener to every button in the structure that does not have a listener already.
    
    Parameters:
    listener - The ActionListener to be added
  - setTitle
```
public void setTitle(java.lang.String title)
```
    Sets the title of this program. The title appears in the title bar when the program is running as an application.
    
    Parameters:
    title - The title for this program
  - getTitle
```
public java.lang.String getTitle()
```
    Gets the title of this program.
    
    Returns:
    The title in use for this program
  - getMenuBar
```
public ProgramMenuBar getMenuBar()
```
    Returns the menu bar associated with this program. Note that this menu bar cannot be set by clients, although it can be changed initially by overriding the createMenuBar factory method.
    
    Returns:
    The menu bar in use for this program
  - start
```
public void start(java.lang.String[] args)
```
    Starts the program using the specified argument list.
    
    Parameters:
    args - An array of strings passed to the program
  - exit
```
public void exit()
```
    Exits from the program. Subclasses should override this method if they need to perform any actions before shutting down the program, such as asking the user to save any unsaved files. Any clients that do override this method should call super.exit() at the end of their processing.
  - addExitHook
```
public void addExitHook(java.lang.Object obj)
```
    Requests that the program call the exit method in the specified object before exiting.
  - pause
```
public void pause(double milliseconds)
```
    Delays the calling thread for the specified time, which is expressed in milliseconds. Unlike Thread.sleep, this method never throws an exception.
    
    Parameters:
    milliseconds - The sleep time in milliseconds
  - mouseClicked
```
public void mouseClicked(java.awt.event.MouseEvent e)
```
    Called when the mouse is clicked. A call to mouseClicked is always preceded by both a mousePressed and a mouseReleased event for the same source.
    
    Specified by:
    
    mouseClicked in interface java.awt.event.MouseListener
  - mousePressed
```
public void mousePressed(java.awt.event.MouseEvent e)
```
    Called when the mouse button is pressed.
    
    Specified by:
    
    mousePressed in interface java.awt.event.MouseListener
  - mouseReleased
```
public void mouseReleased(java.awt.event.MouseEvent e)
```
    Called when the mouse button is released.
    
    Specified by:
    
    mouseReleased in interface java.awt.event.MouseListener
  - mouseEntered
```
public void mouseEntered(java.awt.event.MouseEvent e)
```
    Called when the mouse enters the source (which may be either a component or a GObject).
    
    Specified by:
    
    mouseEntered in interface java.awt.event.MouseListener
  - mouseExited
```
public void mouseExited(java.awt.event.MouseEvent e)
```
    Called when the mouse exits the source (which may be either a component or a GObject).
    
    Specified by:
    
    mouseExited in interface java.awt.event.MouseListener
  - mouseMoved
```
public void mouseMoved(java.awt.event.MouseEvent e)
```
    Called when the mouse is moved.
    
    Specified by:
    
    mouseMoved in interface java.awt.event.MouseMotionListener
  - mouseDragged
```
public void mouseDragged(java.awt.event.MouseEvent e)
```
    Called when the mouse is dragged with the button down. Java makes several guarantees about dragging. First, a mouseDragged call is always preceded by a mousePressed call for the same source. If the mouse is pressed elsewhere and then enters a source with the button down, no drag event occurs. Moreover, once the mouse button goes down in a particular source, only that source will receive mouse events until the button goes up. Those events, moreover, are reported even in the mouse travels outside the domain of the object.
    
    Specified by:
    
    mouseDragged in interface java.awt.event.MouseMotionListener
  - keyTyped
```
public void keyTyped(java.awt.event.KeyEvent e)
```
    Called when a key is typed (i.e., pressed and released).
    
    Specified by:
    
    keyTyped in interface java.awt.event.KeyListener
  - keyPressed
```
public void keyPressed(java.awt.event.KeyEvent e)
```
    Called when a key is pressed.
    
    Specified by:
    
    keyPressed in interface java.awt.event.KeyListener
  - keyReleased
```
public void keyReleased(java.awt.event.KeyEvent e)
```
    Called when a key is released.
    
    Specified by:
    
    keyReleased in interface java.awt.event.KeyListener
  - actionPerformed
```
public void actionPerformed(java.awt.event.ActionEvent e)
```
    Called when a component (typically a button) is activated.
    
    Specified by:
    
    actionPerformed in interface java.awt.event.ActionListener
  - getPreferredSize
```
public java.awt.Dimension getPreferredSize()
```
    Returns the preferred size of the content pane.
    
    Overrides:
    
    getPreferredSize in class java.awt.Container
    
    Returns:
    The preferred size of the content pane
  - getWidth
```
public int getWidth()
```
    Returns the width of the central region.
    
    Overrides:
    
    getWidth in class java.awt.Component
    
    Returns:
    The width of the central region
  - getHeight
```
public int getHeight()
```
    Returns the height of the central region.
    
    Overrides:
    
    getHeight in class java.awt.Component
    
    Returns:
    The height of the central region
  - getParameter
```
public java.lang.String getParameter(java.lang.String name)
```
    Returns the parameter associated with name.
    
    Overrides:
    
    getParameter in class java.applet.Applet
    
    Parameters:
    name - The name of the parameter
    
    Returns:
    The value associated with the parameter, or null if none
  - setLayout
```
public void setLayout(java.awt.LayoutManager layout)
```
    Sets the layout manager for the central region of the content pane.
    
    Overrides:
    
    setLayout in class javax.swing.JApplet
    
    Parameters:
    layout - The layout manager to use
  - getLayout
```
public java.awt.LayoutManager getLayout()
```
    Gets the layout manager for the central region of the content pane.
    
    Overrides:
    
    getLayout in class java.awt.Container
    
    Returns:
    The active layout manager
  - setBackground
```
public void setBackground(java.awt.Color color)
```
    Sets the background for the central region of the content pane.
    
    Overrides:
    
    setBackground in class java.awt.Component
    
    Parameters:
    The - new background color
  - remove
```
public void remove(int index)
```
    Removes the component at the specified index from the central region.
    
    Overrides:
    
    remove in class java.awt.Container
    
    Parameters:
    index - The index position of the component to remove
  - remove
```
public void remove(java.awt.Component comp)
```
    Removes the specified component from the central region.
    
    Overrides:
    
    remove in class javax.swing.JApplet
    
    Parameters:
    comp - The component to remove
  - removeAll
```
public void removeAll()
```
    Removes all components from the central region.
    
    Overrides:
    
    removeAll in class java.awt.Container
  - validate
```
public void validate()
```
    Forwards validate to the content pane.
    
    Overrides:
    
    validate in class java.awt.Container
  - repaint
```
public void repaint()
```
    Forwards repaint to the content pane.
    
    Overrides:
    
    repaint in class java.awt.Component
  - start
```
public final void start()
```
    Starts the program when it is running in application mode. Note that this overloads the start method in Applet and therefore will be called as part of applet startup.
    
    Overrides:
    
    start in class java.applet.Applet
  - destroy
```
public void destroy()
```
    Called when the program has been told to destroy itself. The code here simply stops the main thread. This implementation uses reflection to invoke stop to avoid the fact that stop is deprecated, but there isn't a a good alternative here. The dangers that led to its deprecation can't in fact apply because the entire program is going away.
    
    Overrides:
    
    destroy in class java.applet.Applet
  - main
```
public static void main(java.lang.String[] args)
```
    Every application must either contain a "Main-Class" entry in its manifest file or include a main method that looks like this, where MyClass is the name of the program class:
    public static void main(String[] args) { new MyClass().start(); }
    If the program needs the command line arguments, the args array can be passed to the start method and then retrieved using the getArgumentArray method.
    
    Parameters:
    args - An array of string arguments
  - menuAction
```
public void menuAction(java.lang.String cmd)
```
    Called whenever an action event is detected in the menu bar. Most of these actions are simply passed on to the appropriate console.

Class Program

Nested Class Summary

Nested classes/interfaces inherited from class java.awt.Component

Field Summary

Fields inherited from class java.awt.Component

Fields inherited from interface java.awt.image.ImageObserver

Method Summary

Methods inherited from class javax.swing.JApplet

Methods inherited from class java.applet.Applet

Methods inherited from class java.awt.Panel

Methods inherited from class java.awt.Container

Methods inherited from class java.awt.Component

Methods inherited from class java.lang.Object

Field Detail

NORTH

SOUTH

EAST

WEST

CENTER

Method Detail

run

init

print

print

print

print

print

print

print

print

println

println

println

println

println

println

println

println

println

showErrorMessage

readLine

readLine

readInt

readInt

readInt

readInt

readDouble

readDouble

readDouble

readDouble

readBoolean

readBoolean

readBoolean

isAppletMode

setConsole

getConsole

getDialog

getInputModel

getOutputModel

getReader

getWriter

getRegionPanel

add

addActionListeners

addActionListeners

setTitle

getTitle

getMenuBar

start

exit

addExitHook

pause

mouseClicked

mousePressed

mouseReleased

mouseEntered

mouseExited

mouseMoved

mouseDragged

keyTyped