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java.lang.Objectjava.awt.Component
java.awt.Container
java.awt.Window
java.awt.Frame
javax.swing.JFrame
wrpSampler
This class is the base class for a simple application. By extending this class, you can build a GUI Java application that does what you want, writing only a minimal amount of new code.
The base application has two text areas: one at the top of the window for user input, and one at the bottom for program output. In the middle is a panel with buttons and a label containing user instructions.
The user should enter something in the upper text area and press the 'Process' button. Once pressed, the processData() method is called. This is where the main work is done by this program.
This sample program merely copies the text from the top area to the bottom area. By extending this class and implementing your own processData() method, you can create a program to do whatever you want it to do.
The following steps should be taken to create a new program:
The initValues() method should set two string variables:
The processData() method performs the specific operations for your program. It has the following class methods available:
The main method should use the show() method to create and start the program.
For example, look at the following subclasses:
Nested Class Summary |
Nested classes inherited from class javax.swing.JFrame |
javax.swing.JFrame.AccessibleJFrame |
Nested classes inherited from class java.awt.Frame |
java.awt.Frame.AccessibleAWTFrame |
Nested classes inherited from class java.awt.Window |
java.awt.Window.AccessibleAWTWindow |
Nested classes inherited from class java.awt.Container |
java.awt.Container.AccessibleAWTContainer |
Nested classes inherited from class java.awt.Component |
java.awt.Component.AccessibleAWTComponent, java.awt.Component.BltBufferStrategy, java.awt.Component.FlipBufferStrategy |
Field Summary | |
java.lang.String |
bottomText
This string will be set to whatever is in the lower text area. |
boolean |
debugSwitch
Debugging switch. |
java.lang.String |
helpText
This string should contain user instructions. |
protected java.awt.Panel |
pnlBottom
|
protected javax.swing.JPanel |
pnlButtons
|
protected java.awt.Panel |
pnlTop
|
java.lang.String |
programName
This string should be set to the program name in the initValues() method |
java.lang.String |
topText
This string will be set to whatever the user entered. |
protected javax.swing.JTextArea |
txtBottom
|
protected javax.swing.JTextArea |
txtTop
|
Fields inherited from class javax.swing.JFrame |
accessibleContext, EXIT_ON_CLOSE, rootPane, rootPaneCheckingEnabled |
Fields inherited from class java.awt.Frame |
CROSSHAIR_CURSOR, DEFAULT_CURSOR, E_RESIZE_CURSOR, HAND_CURSOR, ICONIFIED, MAXIMIZED_BOTH, MAXIMIZED_HORIZ, MAXIMIZED_VERT, MOVE_CURSOR, N_RESIZE_CURSOR, NE_RESIZE_CURSOR, NORMAL, NW_RESIZE_CURSOR, S_RESIZE_CURSOR, SE_RESIZE_CURSOR, SW_RESIZE_CURSOR, TEXT_CURSOR, W_RESIZE_CURSOR, WAIT_CURSOR |
Fields inherited from class java.awt.Component |
BOTTOM_ALIGNMENT, CENTER_ALIGNMENT, LEFT_ALIGNMENT, RIGHT_ALIGNMENT, TOP_ALIGNMENT |
Fields inherited from interface javax.swing.WindowConstants |
DISPOSE_ON_CLOSE, DO_NOTHING_ON_CLOSE, HIDE_ON_CLOSE |
Fields inherited from interface java.awt.image.ImageObserver |
ABORT, ALLBITS, ERROR, FRAMEBITS, HEIGHT, PROPERTIES, SOMEBITS, WIDTH |
Constructor Summary | |
wrpSampler()
Creates new form wrpSampler The init() method initializes all of the necessary values |
Method Summary | |
void |
clearDisplay()
Should clear the upper and lower text areas. |
void |
debugPrint(java.lang.String rtn)
Display debugging information, but without a specific message. |
void |
debugPrint(java.lang.String rtn,
java.lang.String s)
Displays debugging information. |
java.lang.String |
getBottomText()
Can be used to set the bottom text area |
java.lang.String |
getTopText()
Can be used to get the string in the top text area |
void |
init()
Initializes the form by calling the methods initValues(), initComponents(), and initEnvironment() |
void |
initEnvironment()
initializes the title and help labels, using the class variables that were set in the initValues() method. |
void |
initValues()
Initializes class variables. |
static void |
main(java.lang.String[] args)
|
void |
processData()
The method that should implement the main processing actions of the program. |
void |
quitProgram()
|
void |
setBottomText(java.lang.String s)
Can be used to set the lower text area. |
void |
setTopText(java.lang.String s)
Can be used to set the top text area. |
Methods inherited from class javax.swing.JFrame |
addImpl, createRootPane, frameInit, getAccessibleContext, getContentPane, getDefaultCloseOperation, getGlassPane, getJMenuBar, getLayeredPane, getRootPane, isDefaultLookAndFeelDecorated, isRootPaneCheckingEnabled, paramString, processWindowEvent, remove, setContentPane, setDefaultCloseOperation, setDefaultLookAndFeelDecorated, setGlassPane, setJMenuBar, setLayeredPane, setLayout, setRootPane, setRootPaneCheckingEnabled, update |
Methods inherited from class java.awt.Frame |
addNotify, finalize, getCursorType, getExtendedState, getFrames, getIconImage, getMaximizedBounds, getMenuBar, getState, getTitle, isResizable, isUndecorated, remove, removeNotify, setCursor, setExtendedState, setIconImage, setMaximizedBounds, setMenuBar, setResizable, setState, setTitle, setUndecorated |
Methods inherited from class java.awt.Window |
addPropertyChangeListener, addPropertyChangeListener, addWindowFocusListener, addWindowListener, addWindowStateListener, applyResourceBundle, applyResourceBundle, createBufferStrategy, createBufferStrategy, dispose, getBufferStrategy, getFocusableWindowState, getFocusCycleRootAncestor, getFocusOwner, getFocusTraversalKeys, getGraphicsConfiguration, getInputContext, getListeners, getLocale, getMostRecentFocusOwner, getOwnedWindows, getOwner, getToolkit, getWarningString, getWindowFocusListeners, getWindowListeners, getWindowStateListeners, hide, isActive, isFocusableWindow, isFocusCycleRoot, isFocused, isShowing, pack, postEvent, processEvent, processWindowFocusEvent, processWindowStateEvent, removeWindowFocusListener, removeWindowListener, removeWindowStateListener, setCursor, setFocusableWindowState, setFocusCycleRoot, setLocationRelativeTo, show, toBack, toFront |
Methods inherited from class java.awt.Container |
add, add, add, add, add, addContainerListener, applyComponentOrientation, areFocusTraversalKeysSet, countComponents, deliverEvent, doLayout, findComponentAt, findComponentAt, getAlignmentX, getAlignmentY, getComponent, getComponentAt, getComponentAt, getComponentCount, getComponents, getContainerListeners, getFocusTraversalPolicy, getInsets, getLayout, getMaximumSize, getMinimumSize, getPreferredSize, insets, invalidate, isAncestorOf, isFocusCycleRoot, isFocusTraversalPolicySet, layout, list, list, locate, minimumSize, paint, paintComponents, preferredSize, print, printComponents, processContainerEvent, remove, removeAll, removeContainerListener, setFocusTraversalKeys, setFocusTraversalPolicy, setFont, transferFocusBackward, transferFocusDownCycle, validate, validateTree |
Methods inherited from class java.awt.Component |
action, add, addComponentListener, addFocusListener, addHierarchyBoundsListener, addHierarchyListener, addInputMethodListener, addKeyListener, addMouseListener, addMouseMotionListener, addMouseWheelListener, bounds, checkImage, checkImage, coalesceEvents, contains, contains, createImage, createImage, createVolatileImage, createVolatileImage, disable, disableEvents, dispatchEvent, enable, enable, enableEvents, enableInputMethods, firePropertyChange, firePropertyChange, firePropertyChange, getBackground, getBounds, getBounds, getColorModel, getComponentListeners, getComponentOrientation, getCursor, getDropTarget, getFocusListeners, getFocusTraversalKeysEnabled, getFont, getFontMetrics, getForeground, getGraphics, getHeight, getHierarchyBoundsListeners, getHierarchyListeners, getIgnoreRepaint, getInputMethodListeners, getInputMethodRequests, getKeyListeners, getLocation, getLocation, getLocationOnScreen, getMouseListeners, getMouseMotionListeners, getMouseWheelListeners, getName, getParent, getPeer, getPropertyChangeListeners, getPropertyChangeListeners, getSize, getSize, getTreeLock, getWidth, getX, getY, gotFocus, handleEvent, hasFocus, imageUpdate, inside, isBackgroundSet, isCursorSet, isDisplayable, isDoubleBuffered, isEnabled, isFocusable, isFocusOwner, isFocusTraversable, isFontSet, isForegroundSet, isLightweight, isOpaque, isValid, isVisible, keyDown, keyUp, list, list, list, location, lostFocus, mouseDown, mouseDrag, mouseEnter, mouseExit, mouseMove, mouseUp, move, nextFocus, paintAll, prepareImage, prepareImage, printAll, processComponentEvent, processFocusEvent, processHierarchyBoundsEvent, processHierarchyEvent, processInputMethodEvent, processKeyEvent, processMouseEvent, processMouseMotionEvent, processMouseWheelEvent, removeComponentListener, removeFocusListener, removeHierarchyBoundsListener, removeHierarchyListener, removeInputMethodListener, removeKeyListener, removeMouseListener, removeMouseMotionListener, removeMouseWheelListener, removePropertyChangeListener, removePropertyChangeListener, repaint, repaint, repaint, repaint, requestFocus, requestFocus, requestFocusInWindow, requestFocusInWindow, reshape, resize, resize, setBackground, setBounds, setBounds, setComponentOrientation, setDropTarget, setEnabled, setFocusable, setFocusTraversalKeysEnabled, setForeground, setIgnoreRepaint, setLocale, setLocation, setLocation, setName, setSize, setSize, setVisible, show, size, toString, transferFocus, transferFocusUpCycle |
Methods inherited from class java.lang.Object |
clone, equals, getClass, hashCode, notify, notifyAll, wait, wait, wait |
Methods inherited from interface java.awt.MenuContainer |
getFont, postEvent |
Field Detail |
public java.lang.String programName
public java.lang.String helpText
public boolean debugSwitch
public java.lang.String topText
public java.lang.String bottomText
protected java.awt.Panel pnlBottom
protected javax.swing.JPanel pnlButtons
protected java.awt.Panel pnlTop
protected javax.swing.JTextArea txtBottom
protected javax.swing.JTextArea txtTop
Constructor Detail |
public wrpSampler()
Method Detail |
public void init()
public void initValues()
public void initEnvironment()
public void setTopText(java.lang.String s)
public java.lang.String getTopText()
public void setBottomText(java.lang.String s)
public java.lang.String getBottomText()
public void clearDisplay()
public void quitProgram()
public void processData()
public void debugPrint(java.lang.String rtn, java.lang.String s)
rtn
- Name of the routine where the statement is locateds
- Information string to be displayed.public void debugPrint(java.lang.String rtn)
rtn
- Name of the routinepublic static void main(java.lang.String[] args)
args
- the command line arguments
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