Mega Code Archive
Demonstrates method-scoped inner classes
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/*
* file: MethodInnerClassDemo.java
* package: oreilly.hcj.nested
*
* This software is granted under the terms of the Common Public License,
* CPL, which may be found at the following URL:
* http://www-124.ibm.com/developerworks/oss/CPLv1.0.htm
*
* Copyright(c) 2003-2005 by the authors indicated in the @author tags.
* All Rights are Reserved by the various authors.
*
########## DO NOT EDIT ABOVE THIS LINE ########## */
import java.awt.BorderLayout;
import java.awt.Container;
import java.awt.GridLayout;
import java.awt.Toolkit;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import javax.swing.ImageIcon;
import javax.swing.JButton;
import javax.swing.JDialog;
import javax.swing.JLabel;
import javax.swing.JPanel;
/**
* Demonstrates method-scoped inner classes.
*
* @author <a href=mailto:kraythe@arcor.de>Robert Simmons jr. (kraythe)</a>
* @version $Revision: 1.6 $
*/
public class MethodInnerClassDemo extends JDialog {
/** Holds the logo image */
private static final ImageIcon LOGO;
/** Holds the location of the logo image. */
private static final String LOGO_LOCATION = "oreilly/hcj/nested/oreilly_header3.gif";
static {
LOGO = new ImageIcon(ClassLoader.getSystemClassLoader().getResource(LOGO_LOCATION));
}
/** Holds a reference to the content pane. */
private final Container contentPane;
/** holds a demo variable. */
private String demo;
/**
* Creates a new MethodInnerClassDemo object.
*
* @param value
* Some value to be used.
*/
public MethodInnerClassDemo(final int value) {
super();
String title = "Inner Class Demo";
setTitle(title);
setModal(true);
contentPane = getContentPane();
contentPane.setLayout(new BorderLayout());
JLabel logoLabel = new JLabel(LOGO);
contentPane.add(BorderLayout.NORTH, logoLabel);
JButton btn = new JButton("Beep");
/**
* An action listener class.
*
* @author <a href=mailto:kraythe@arcor.de>Robert Simmons jr. (kraythe)</a>
* @version $Revision: 1.6 $
*/
class MyActionListener implements ActionListener {
/**
* {@inheritDoc}
*/
public void actionPerformed(final ActionEvent event) {
Toolkit.getDefaultToolkit().beep();
System.out.println(value);
System.out.println(MethodInnerClassDemo.LOGO_LOCATION);
System.out.println(MethodInnerClassDemo.this.demo);
// System.out.println(title); // <= compiler error
}
}
btn.addActionListener(new MyActionListener());
contentPane.add(BorderLayout.SOUTH, btn);
pack();
}
/**
* Creates a new MethodInnerClassDemo object.
*/
public MethodInnerClassDemo() {
super();
setTitle("Inner Class Demo");
setModal(true);
contentPane = getContentPane();
contentPane.setLayout(new BorderLayout());
JLabel logoLabel = new JLabel(LOGO);
contentPane.add(BorderLayout.NORTH, logoLabel);
JButton btn1 = new JButton("Beep");
JButton btn2 = new JButton("Bell");
/**
* An action listener class.
*
* @author <a href=mailto:kraythe@arcor.de>Robert Simmons jr. (kraythe)</a>
* @version $Revision: 1.6 $
*/
class MyActionListener implements ActionListener {
/**
* {@inheritDoc}
*/
public void actionPerformed(final ActionEvent event) {
Toolkit.getDefaultToolkit().beep();
}
}
btn1.addActionListener(new MyActionListener());
btn2.addActionListener(new MyActionListener());
JPanel pnl = new JPanel(new GridLayout(1, 2));
pnl.add(btn1);
pnl.add(btn2);
contentPane.add(BorderLayout.SOUTH, pnl);
pack();
}
/**
* Run the demo
*
* @param args
* Command Line Arguments.
*/
public static final void main(final String[] args) {
MethodInnerClassDemo demo = new MethodInnerClassDemo();
demo.show();
System.out.println("Done");
}
/**
* Setter for the property demo.
*
* @param demo
* The new value for demo.
*/
public void setDemo(final String demo) {
this.demo = demo;
}
/**
* Getter for the property demo.
*
* @return The current value of demo.
*/
public String getDemo() {
return demo;
}
/**
* Some demo method.
*/
public void someMethod() {
// ActionListener listener = new MyActionListener(); // <= compiler error.
}
}
/* ########## End of File ########## */
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