Class XMLExamples

java.lang.Object
  java.awt.Component
      java.awt.Container
          java.awt.Window
              java.awt.Frame
                  javax.swing.JFrame
                      XMLExamples

All Implemented Interfaces:

java.awt.event.ActionListener, java.awt.image.ImageObserver, java.awt.MenuContainer, java.io.Serializable, java.util.EventListener, javax.accessibility.Accessible, javax.swing.RootPaneContainer, javax.swing.WindowConstants

public class XMLExamples
extends javax.swing.JFrame
implements java.awt.event.ActionListener

Example of StAX and JaXB use. Uses the following schema:

<xsi:schema xmlns:xsi="http://www.w3.org/2001/XMLSchema" targetNamespace="http://www.geog.leeds.ac.uk" xmlns="http://www.geog.leeds.ac.uk" elementFormDefault="qualified">
<xsi:element name="map">
<xsi:complexType>
<xsi:sequence>
<xsi:element name="polygon" minOccurs="0" maxOccurs="unbounded">
<xsi:complexType>
<xsi:sequence>
<xsi:element name="points" type="xsi:string"/>
</xsi:sequence>
<xsi:attribute name="id" type="xsi:ID"/>
</xsi:complexType>
</xsi:element>
</xsi:sequence>
</xsi:complexType>
</xsi:element>
</xsi:schema>


This should be saved in an xsd file in the same directory as this file and the following command run against it at the command line:

xjc -p xmlclasses filename.xsd

This should generate the following classes:

Map.java - The class representing the root element of the XML
ObjectFactory.java - Class for generating new copies of the XML root and sub-elements
package-info.java

Compile these (note they are in the xmlclasses package). This should also generate classes representing the sub-elements that are classes within Map.java. Provided you have the XSD file in the same directory as this XMLExamples.java file, the new files should be in a xmlclasses directory within the directory this java file and the XSD file is in. (NB: this can be any package name - we've just pick this here and used it throughout).

You should then be able to compile and run this XMLExamples.java file, and use it to read in XML files like this:

<?xml version="1.0" encoding="UTF-8"?>
<?xml-stylesheet type="text/xsl" href="map2.xsl" ?>
<map xmlns="http://www.geog.leeds.ac.uk" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="www.geog.leeds.ac.uk map2.xsd">
<polygon id="p1">
<points>100,100 200,100 200,200 100,0 100,100 </points>
</polygon>
</map>

See Also:

Serialized Form

Nested Class Summary

Nested classes/interfaces inherited from class javax.swing.JFrame

javax.swing.JFrame.AccessibleJFrame

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

java.awt.Frame.AccessibleAWTFrame

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

java.awt.Window.AccessibleAWTWindow

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

java.awt.Container.AccessibleAWTContainer

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

java.awt.Component.AccessibleAWTComponent, java.awt.Component.BaselineResizeBehavior, java.awt.Component.BltBufferStrategy, java.awt.Component.FlipBufferStrategy

Field Summary

private java.lang.String	id
private java.lang.String	jaxbMenuText
private javax.swing.JLabel	jlabel
private javax.swing.JPanel	jpanel
private boolean	loaded
private java.lang.String	loadJaxbMenuItemText
private java.lang.String	loadStaxMenuItemText
private java.lang.String	newJaxbMenuItemText
private java.awt.Polygon	polygon
private java.lang.String	saveJaxbMenuItemText
private java.lang.String	saveStaxMenuItemText
private java.lang.String	staxMenuText

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

XMLExamples()
Sets up the GUI.

Method Summary

void	actionPerformed(java.awt.event.ActionEvent e) Allows XMLExamples to be used as an ActionListener.
java.awt.Polygon	buildPolygon(java.lang.String points) Convenience method to take in XML points and convert them to a java.awt.Polygon.
private java.io.File	getFileFromUser(java.lang.String title) Convenience method to get a file from a user.
private java.lang.String	getPoints(java.awt.Polygon polygon) Convenience method to return a String of points from a java.awt.Polygon.
static void	main(java.lang.String[] args) Just starts everything going.
private void	newJaxbXML() Generates a completely new object from the XML Schema, rather than reading one from XML file elements.
void	paint(java.awt.Graphics g) If a polygon has been loaded into the system, paint it.
private void	readJaxbXML() Reads XML using JaxB.
private void	readStaxXML() Reads XML using Stax.
private void	writeJaxbXML() Writes XML using JaxB.
private void	writeStaxXML() Write XML files using Stax.

Methods inherited from class javax.swing.JFrame

addImpl, createRootPane, frameInit, getAccessibleContext, getContentPane, getDefaultCloseOperation, getGlassPane, getGraphics, getJMenuBar, getLayeredPane, getRootPane, getTransferHandler, isDefaultLookAndFeelDecorated, isRootPaneCheckingEnabled, paramString, processWindowEvent, remove, repaint, setContentPane, setDefaultCloseOperation, setDefaultLookAndFeelDecorated, setGlassPane, setIconImage, setJMenuBar, setLayeredPane, setLayout, setRootPane, setRootPaneCheckingEnabled, setTransferHandler, update

Methods inherited from class java.awt.Frame

addNotify, getCursorType, getExtendedState, getFrames, getIconImage, getMaximizedBounds, getMenuBar, getState, getTitle, isResizable, isUndecorated, remove, removeNotify, setCursor, setExtendedState, 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, getIconImages, getInputContext, getListeners, getLocale, getModalExclusionType, getMostRecentFocusOwner, getOwnedWindows, getOwner, getOwnerlessWindows, getToolkit, getWarningString, getWindowFocusListeners, getWindowListeners, getWindows, getWindowStateListeners, hide, isActive, isAlwaysOnTop, isAlwaysOnTopSupported, isFocusableWindow, isFocusCycleRoot, isFocused, isLocationByPlatform, isShowing, pack, postEvent, processEvent, processWindowFocusEvent, processWindowStateEvent, removeWindowFocusListener, removeWindowListener, removeWindowStateListener, reshape, setAlwaysOnTop, setBounds, setBounds, setCursor, setFocusableWindowState, setFocusCycleRoot, setIconImages, setLocationByPlatform, setLocationRelativeTo, setMinimumSize, setModalExclusionType, setSize, setSize, setVisible, 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, getComponentZOrder, getContainerListeners, getFocusTraversalPolicy, getInsets, getLayout, getMaximumSize, getMinimumSize, getMousePosition, getPreferredSize, insets, invalidate, isAncestorOf, isFocusCycleRoot, isFocusTraversalPolicyProvider, isFocusTraversalPolicySet, layout, list, list, locate, minimumSize, paintComponents, preferredSize, print, printComponents, processContainerEvent, remove, removeAll, removeContainerListener, setComponentZOrder, setFocusTraversalKeys, setFocusTraversalPolicy, setFocusTraversalPolicyProvider, 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, firePropertyChange, firePropertyChange, firePropertyChange, firePropertyChange, firePropertyChange, firePropertyChange, getBackground, getBaseline, getBaselineResizeBehavior, getBounds, getBounds, getColorModel, getComponentListeners, getComponentOrientation, getCursor, getDropTarget, getFocusListeners, getFocusTraversalKeysEnabled, getFont, getFontMetrics, getForeground, getHeight, getHierarchyBoundsListeners, getHierarchyListeners, getIgnoreRepaint, getInputMethodListeners, getInputMethodRequests, getKeyListeners, getLocation, getLocation, getLocationOnScreen, getMouseListeners, getMouseMotionListeners, getMousePosition, 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, isMaximumSizeSet, isMinimumSizeSet, isOpaque, isPreferredSizeSet, 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, requestFocus, requestFocus, requestFocusInWindow, requestFocusInWindow, resize, resize, setBackground, setComponentOrientation, setDropTarget, setEnabled, setFocusable, setFocusTraversalKeysEnabled, setForeground, setIgnoreRepaint, setLocale, setLocation, setLocation, setMaximumSize, setName, setPreferredSize, show, size, toString, transferFocus, transferFocusUpCycle

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Methods inherited from interface java.awt.MenuContainer

getFont, postEvent

Field Detail

polygon

private java.awt.Polygon polygon

id

private java.lang.String id

saveStaxMenuItemText

private java.lang.String saveStaxMenuItemText

loadStaxMenuItemText

private java.lang.String loadStaxMenuItemText

saveJaxbMenuItemText

private java.lang.String saveJaxbMenuItemText

loadJaxbMenuItemText

private java.lang.String loadJaxbMenuItemText

newJaxbMenuItemText

private java.lang.String newJaxbMenuItemText

staxMenuText

private java.lang.String staxMenuText

jaxbMenuText

private java.lang.String jaxbMenuText

loaded

private boolean loaded

jpanel

private javax.swing.JPanel jpanel

jlabel

private javax.swing.JLabel jlabel

Constructor Detail

XMLExamples

public XMLExamples()

Sets up the GUI.

Method Detail

actionPerformed

public void actionPerformed(java.awt.event.ActionEvent e)

Allows XMLExamples to be used as an ActionListener. Rather poorly, uses text items passed into constructor to determine method to call. Would be better using Actions.

Specified by:

actionPerformed in interface java.awt.event.ActionListener

Parameters:

e -

readStaxXML

private void readStaxXML()

Reads XML using Stax.

writeStaxXML

private void writeStaxXML()

Write XML files using Stax.

readJaxbXML

private void readJaxbXML()

Reads XML using JaxB.

writeJaxbXML

private void writeJaxbXML()

Writes XML using JaxB.

newJaxbXML

private void newJaxbXML()

Generates a completely new object from the XML Schema, rather than reading one from XML file elements.

getFileFromUser

private java.io.File getFileFromUser(java.lang.String title)

Convenience method to get a file from a user.

Parameters:

title - - for dialog.

Returns:

File picked or null if cancelled.

buildPolygon

public java.awt.Polygon buildPolygon(java.lang.String points)

Convenience method to take in XML points and convert them to a java.awt.Polygon. Will parse points with space or comma delimiters.

Parameters:

points - should be in the form "x,y x,y x,y x,y".

getPoints

private java.lang.String getPoints(java.awt.Polygon polygon)

Convenience method to return a String of points from a java.awt.Polygon.

Returns:

points will be in the form "x,y x,y x,y x,y".

paint

public void paint(java.awt.Graphics g)

If a polygon has been loaded into the system, paint it.

Overrides:

paint in class java.awt.Container

Parameters:

g -

main

public static void main(java.lang.String[] args)

Just starts everything going.

Parameters:

args -