I don't understand why Symbian has been killed off...
I recently posted my impressions of the 808 http://forums.guru3d.com/showthread.php?t=374416 and it has it's problems which means I will not be keeping the phone for very long. However if Nokia continued with Symbian which has far more potential than Windows Phone I'd have been happy with it and would have stuck with the phone knowing there will be more updates.
Now I've never used Symbian before, unless the 3310 run it, though that was a vastly different experience that you cannot compare. I decided just to give it a chance as the 808 was mega cheap on ebay and I thought what the hell, my upgrade comes in April and I can sell it then if I don't like it. I broke my phone so I needed to buy a new one and it's a bit of fun trying something other than Android or IOS for once.
I have to say now I'm not a fan of Windows Phone and IOS being closed systems, I think you can remain open like Android while offering a great selection of apps on the store. Developers really need to get over piracy, especially platform owners and the makers of Operating Systems. I feel like there is this trend to go towards a closed OS as an easy way to combat that, rather than offering a great open experience but having a service worth paying for over piracy. For example Steam has really defeated Piracy on the PC, people still do it, they always will and it isn't always a bad thing anyways. A lot of the time people will torrent stuff and then later buy it on Steam when they know it is a product they like. If that person goes on to tell other people about it then it creates more sales.
From what I've read Symbian has this bad image of piracy but I really think that is due to a lackluster service on Nokia's end more than anything. The store needs a lot of work, while it is functioning, it does need a bit of a UI tweak which obviously wont be happening. I also feel like you have to get your apps elsewhere to test them first as there is no protection from Nokia like you get with Android where you can get a refund within a certain time in case the app doesn't work. I've bought a few apps now which just plain don't work and it has put me off buying anything else.
Back to the topic though, I've never used Symbian before or had a Nokia since the 3310 and I'm really surprised at how good it is. I said in that thread it feels like a mix between IOS and Android and it even has good functionality of it's own. Belle FP2 is either a massive step up far too late or Symbian has gotten a lot of hate for no reason, I don't know as It's the only version I've used. The core functionality is good, it is fast, it doesn't drain much battery and it does everything the other platforms do. Yeah it looks a bit drab but it's so easy to just change the theme unlike IOS and while you can do it on Android it isn't anywhere near as easy as Symbian. I really Respect Nokia for a lot of things with Symbian and while I said the store needs work, it does function. I feel like it probably lacks a lot of options like more categories due to the lack of apps on it.
I've only really got two problems with Symbian and that is the stock browser is bad, which wouldn't be a problem if Nokia was continuing development of Symbian because they could easily fix it in the future. I have switched to Opera which fixes most of those issues, though I do wish Symbian supported Flash 11 because of my next point. The second issue is lack of apps, really this is what has lead me to selling the phone come my upgrade in April. You cannot do much on the phone compared to the others because of the lack of apps, if there was Flash 11 it would be less of an issue, however not being able to watch stuff like ITV Player or TVcatchup is a big downer. The lack of games is also another depressing thing and really the lack of development on Symbian is depressing.
From what I've seen of Belle FP2, Symbian is a great starting point for Nokia's Smart Phone future, sadly it looks like it has come too late and they've always ditched it for Windows Phone, which I think is a shame. The other biggest issue Nokia had is they never really made good hardware compared to the rest in the past. They've just started making competitive Smart Phone hardware just as they killed off Symbian. If the Lumia 920 came in 2010 for example I feel like more people would have taken notice of Symbian, sadly it came to Windows Phone and not Symbian. Sadly like I said it looks like it took too long for Symbian to get good... though I'm only guessing on that as I've never used it before Belle FP2.
I do like it though and really wish'd Nokia stuck with it.
See I don't think Symbian is the problem, Belle is really nice and what Nokia have done is make it function like IOS and Android. I've used both in the past, I left IOS because I found it too restrictive and used Android ever since. Making the jump to Symbian Belle, it's pretty much the same experience but with no apps, though the core Belle experience feels more refined than Android. It probably just came too late for Nokia....
I also think Nokia hasn't made a Smart Phone to get excited for until the 920. Everything else they made was sub par, poor specs, poor screen and just very clunky and I'm guessing from reviews, Symbian wasn't good before Belle. Like I said though if they released the 920 last year on Symbian Belle instead of Windows Phone 8, I think Symbian could have survived. Really all Belle needed was the hardware and it just never got it, the 808 is great for a camera but the hardware isn't mainstream like the 920 is.
I just find it weird how Nokia handled the whole situation, it took years for them to get going and once they did they retired Symbian and never released it on a relevant Smart Phone to give it a chance.
The 808 has opened my eyes to Nokia Hardware though, it is good and well made. I'll wait to see if they release a refreshed 808 with better specs and screen this year before I upgrade as I've just seen rumours about it. I'm just not convinced about Microsoft making good on Windows Phone, I don't like the experience it currently offers and Microsoft have never delivered on anything worth while in the past apart from Windows 7. If I look at all their software, I don't remember any of it being good and now with Windows Phone being a closed experience, you're stuck with Microsoft's software.
I just think it is a shame, I really like Belle, it just needs apps and Nokia to revive development for it.
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Don't understand why WSDL isn't valid
In Workshop 9.2, I'm developing an annotation-based web service. I imported my schemas and generated the xmlbeans, and after setting my input and output parameters in the service class, I tried to generate the WSDL from the service. For some reason, the WSDL is not valid, and I don't understand why. I'm sure it's a namespace issue, but I don't see it.
The enclosed WSDL is somewhat paraphrased from the generated WSDL.
On line 76 (marked with a comment), there is the first of several errors. It says:
"The input element is referencing an undefined message 'overrideRequest'. Check that the message name and namespace are correct and that the message has been defined."
Here is the WSDL:
<?xml version='1.0' encoding='UTF-8'?>
<s0:definitions name="SampleServiceDefinitions"
targetNamespace="http://schemas.wamu.com/Sample.wsdl"
xmlns=""
xmlns:s0="http://schemas.xmlsoap.org/wsdl/"
xmlns:tns="http://schemas.wamu.com/Sample.wsdl"
xmlns:ratings="http://schemas.wamu.com/2006/07/LoanSampleRequest"
xmlns:questions="http://schemas.wamu.com/2006/07/QuestionsRequest"
xmlns:s2="http://schemas.xmlsoap.org/wsdl/soap/">
<s0:types>
<xs:schema targetNamespace="http://schemas.wamu.com/2006/07/LoanSampleRequest"
xmlns:ratings="http://schemas.wamu.com/2006/07/LoanSampleRequest"
xmlns:xs="http://www.w3.org/2001/XMLSchema">
<xs:element name="loanSampleRequest">
<xs:complexType>
<xs:sequence>
<xs:element ref="ratings:loanProperties"/>
</xs:sequence>
<xs:attribute name="modelVersion" type="xs:integer" use="optional"/>
</xs:complexType>
</xs:element>
<xs:element name="loanSampleResponse">
<xs:complexType>
<xs:sequence>
<xs:element ref="ratings:loanProperties"/>
<xs:element ref="ratings:messages"/>
</xs:sequence>
</xs:complexType>
</xs:element>
<xs:element name="loanProperties">
<xs:complexType>
<xs:sequence>
<xs:element maxOccurs="unbounded" ref="ratings:property"/>
</xs:sequence>
</xs:complexType>
</xs:element>
<xs:element name="property">
<xs:complexType>
<xs:sequence>
<xs:element ref="ratings:key"/>
<xs:element ref="ratings:value"/>
</xs:sequence>
</xs:complexType>
</xs:element>
<xs:element name="key" type="xs:string"/>
<xs:element name="value" type="xs:string"/>
<xs:element name="messages">
<xs:complexType>
<xs:sequence>
<xs:element maxOccurs="unbounded" minOccurs="0" ref="ratings:message"/>
</xs:sequence>
</xs:complexType>
</xs:element>
<xs:element name="message">
<xs:complexType mixed="true">
<xs:attribute name="level" type="xs:string"/>
<xs:attribute name="fieldName" type="xs:string"/>
</xs:complexType>
</xs:element>
</xs:schema>
</s0:types>
<s0:message name="overrideRequest">
<s0:part element="ratings:loanSampleRequest" name="parameters"/>
</s0:message>
<s0:message name="overrideRequestResponse">
<s0:part element="ratings:loanSampleResponse" name="parameters"/>
</s0:message>
<s0:message name="ratingsRequest">
<s0:part element="ratings:loanSampleRequest" name="parameters"/>
</s0:message>
<s0:message name="ratingsRequestResponse">
<s0:part element="ratings:loanSampleRequest" name="parameters"/>
</s0:message>
<s0:portType name="Sample">
<s0:operation name="overrideRequest">
<s0:input message="tns:overrideRequest"/> <!-- 76 -->
<s0:output message="overrideRequestResponse"/>
</s0:operation>
<s0:operation name="ratingsRequest" parameterOrder="parameters">
<s0:input message="ratingsRequest"/>
<s0:output message="ratingsRequestResponse"/>
</s0:operation>
</s0:portType>
<s0:binding name="SampleServiceSoapBinding" type="tns:Sample">
<s2:binding style="document" transport="http://schemas.xmlsoap.org/soap/http"/>
<s0:operation name="overrideRequest">
<s2:operation soapAction="" style="document"/>
<s0:input>
<s2:body parts="parameters" use="literal"/>
</s0:input>
<s0:output>
<s2:body parts="parameters" use="literal"/>
</s0:output>
</s0:operation>
<s0:operation name="ratingsRequest">
<s2:operation soapAction="" style="document"/>
<s0:input>
<s2:body parts="parameters" use="literal"/>
</s0:input>
<s0:output>
<s2:body parts="parameters" use="literal"/>
</s0:output>
</s0:operation>
</s0:binding>
<s0:service name="SampleService">
<s0:port binding="tns:SampleServiceSoapBinding" name="SampleSoapPort">
<s2:address location="http://localhost:7001/Sample/Sample"/>
</s0:port>
</s0:service>
</s0:definitions>
--------------------After I made these changes and re-validated, I get a dialog that says "The WSDL file is valid however warnings have been issued. See the Problems view for a list of the validation warnings", and I see the following in the Problems list:
IWAE0053E An internal error has occurred running validation on project:RiskRatingContainer]:RiskRatingContainer, check the log file for details
In in my WSDL editor, the lines in question still have a red circle with a white "x" in the left margin, and the tooltip still reports the same errors as before.
In the "Error Log" view, I see the following:
*** ERROR ***: Thu Feb 22 12:10:09 PST 2007 org.eclipse.wst.validation.internal.core.ValidationException: IWAE0053E An internal error has occurred running validation on project:RiskRatingContainer]:RiskRatingContainer, check the log file for details
Just in case, I'll include my current WSDL again here.
<?xml version='1.0' encoding='UTF-8'?>
<s0:definitions name="SampleServiceDefinitions"
targetNamespace="http://schemas.wamu.com/Sample.wsdl"
xmlns=""
xmlns:s0="http://schemas.xmlsoap.org/wsdl/"
xmlns:tns="http://schemas.wamu.com/Sample.wsdl"
xmlns:ratings="http://schemas.wamu.com/2006/07/LoanSampleRequest"
xmlns:questions="http://schemas.wamu.com/2006/07/QuestionsRequest"
xmlns:s2="http://schemas.xmlsoap.org/wsdl/soap/">
<s0:types>
<xs:schema targetNamespace="http://schemas.wamu.com/2006/07/LoanSampleRequest"
xmlns:ratings="http://schemas.wamu.com/2006/07/LoanSampleRequest"
xmlns:xs="http://www.w3.org/2001/XMLSchema">
<xs:element name="loanSampleRequest">
<xs:complexType>
<xs:sequence>
<xs:element ref="ratings:loanProperties"/>
</xs:sequence>
<xs:attribute name="modelVersion" type="xs:integer" use="optional"/>
</xs:complexType>
</xs:element>
<xs:element name="loanSampleResponse">
<xs:complexType>
<xs:sequence>
<xs:element ref="ratings:loanProperties"/>
<xs:element ref="ratings:messages"/>
</xs:sequence>
</xs:complexType>
</xs:element>
<xs:element name="loanProperties">
<xs:complexType>
<xs:sequence>
<xs:element maxOccurs="unbounded" ref="ratings:property"/>
</xs:sequence>
</xs:complexType>
</xs:element>
<xs:element name="property">
<xs:complexType>
<xs:sequence>
<xs:element ref="ratings:key"/>
<xs:element ref="ratings:value"/>
</xs:sequence>
</xs:complexType>
</xs:element>
<xs:element name="key" type="xs:string"/>
<xs:element name="value" type="xs:string"/>
<xs:element name="messages">
<xs:complexType>
<xs:sequence>
<xs:element maxOccurs="unbounded" minOccurs="0" ref="ratings:message"/>
</xs:sequence>
</xs:complexType>
</xs:element>
<xs:element name="message">
<xs:complexType mixed="true">
<xs:attribute name="level" type="xs:string"/>
<xs:attribute name="fieldName" type="xs:string"/>
</xs:complexType>
</xs:element>
</xs:schema>
</s0:types>
<s0:message name="overrideRequest">
<s0:part element="ratings:loanSampleRequest" name="parameters"/>
</s0:message>
<s0:message name="overrideRequestResponse">
<s0:part element="ratings:loanSampleResponse" name="parameters"/>
</s0:message>
<s0:message name="ratingsRequest">
<s0:part element="ratings:loanSampleRequest" name="parameters"/>
</s0:message>
<s0:message name="ratingsRequestResponse">
<s0:part element="ratings:loanSampleRequest" name="parameters"/>
</s0:message>
<s0:portType name="Sample">
<s0:operation name="overrideRequest">
<s0:input message="tns:overrideRequest"/> <!-- 76 -->
<s0:output message="tns:overrideRequestResponse"/>
</s0:operation>
<s0:operation name="ratingsRequest" parameterOrder="parameters">
<s0:input message="tns:ratingsRequest"/>
<s0:output message="tns:ratingsRequestResponse"/>
</s0:operation>
</s0:portType>
<s0:binding name="SampleServiceSoapBinding" type="tns:Sample">
<s2:binding style="document" transport="http://schemas.xmlsoap.org/soap/http"/>
<s0:operation name="overrideRequest">
<s2:operation soapAction="" style="document"/>
<s0:input>
<s2:body parts="parameters" use="literal"/>
</s0:input>
<s0:output>
<s2:body parts="parameters" use="literal"/>
</s0:output>
</s0:operation>
<s0:operation name="ratingsRequest">
<s2:operation soapAction="" style="document"/>
<s0:input>
<s2:body parts="parameters" use="literal"/>
</s0:input>
<s0:output>
<s2:body parts="parameters" use="literal"/>
</s0:output>
</s0:operation>
</s0:binding>
<s0:service name="SampleService">
<s0:port binding="tns:SampleServiceSoapBinding" name="SampleSoapPort">
<s2:address location="http://localhost:7001/Sample/Sample"/>
</s0:port>
</s0:service>
</s0:definitions>
--------------------------- -
I don't understand why they ask for payment for all the applications labelled free. Regards
I don't understand why they ask for payment for all the applications labelled free. Regards
How to Get Apps From the App Store Without a Credit Card
http://ipadhelp.com/ipad-help/how-to-get-free-apps-from-the-app-store-without-a- credit-card/
Creating an iTunes Store, App Store, iBookstore, and Mac App Store account without a credit card
http://support.apple.com/kb/ht2534
Why can’t I select None when I edit my payment information?
http://support.apple.com/kb/ts5366
If None is not available - On your computer launch iTunes and click “iTunes Store” in the left navigation pane. Click the “down arrow” next to your name at the top right side of the page and click “Account.” Enter your username and password and click “View Account” to log into your account information. Next to your Payment Type, click “Edit.” Select the “None” button and click “Done.” Confirm that your card has been removed by returning to the Apple account information screen. Under Payment Type, it should say that there is no credit card on file.
iTunes Store: Changing your payment information
http://support.apple.com/kb/HT1918
iTunes Store Accepted Forms of Payment
http://support.apple.com/kb/HT5552
Cheers, Tom -
Why is this an error??? I don't understand why it is... Help Please
Hi,
Ok, I'll preface this by saying there's a lotta code pasted in here but it really quite an easy question, I just need to post all the code so you understand where what came from.
Now.............the question I'm trying to do is to create an applet that has 2 buttons -- each button when clicked opens an application (one is a simple calculator, the other a Mortgage calculation app). When you click one of the buttons (calc or mortgage), that app opens infront of the 2 button menu so its in "focus". The button on the 2 button menu then switches to a "hide app X" button (ie: "Mortgage", changes to "Hide Mortgage"). Thus if you click the hide button, the app that was opened is hidden, and then that "hide" button switches back to the original "app X" button. Pretty simple.
Now, I have from my text book an example that does exactly this, with the simple calculator already in it, and with another app (a traffic light thing) where the Mortgage should be in my final product. I also already have the Mortgage applet I need to insert from another book example in place of that Traffic Light portion.
Now, common sense would dictate that I should be able to just copy my code for the Mortgage applet into the example that has the 2 button menu structure, and overwrite the code I want to get rid of (the traffic light) with the mortgage code & rename the menu buttons. Right?? A simple switch of one thing for another... but therein lies my problem.
I copied all the Mortgage code in correctly over the traffic lights, switched the button names, tried to compile it but I get one error....
Exercise12_17.java:52: cannot resolve symbol
symbol : method pack ()
location: class MortgageApplet
mortgageAppletFrame.pack();I don't understand why..... mortgageAppletFrame.pack(); was a simple rewrite from lightsFrame.pack(); like every other line...... it should work. I've gone over it for 2 days......... Anyone know why it comes up as an error???
Below, in order going down is (1)my code with the 1 error I can't solve, (2)the original menu example I tried to edit, and (3)the Mortgage app code...........
Does anyone know what my error is?? Help or a hint would be greatly appreciated........ Thanks.
My erroring app.......
// Exercise12_17.java: Create multiple windows
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import javax.swing.border.TitledBorder;
public class Exercise12_17 extends JFrame implements ActionListener {
// Declare and create a frame: an instance of MenuDemo
MenuDemo calcFrame = new MenuDemo();
// Declare and create a frame: an instance of RadioButtonDemo
MortgageApplet mortgageAppletFrame = new MortgageApplet();
// Declare two buttons for displaying frames
private JButton jbtCalc;
private JButton jbtMortgage;
public static void main(String[] args) {
Exercise12_17 frame = new Exercise12_17();
frame.setSize( 400, 70 );
frame.setTitle("Exercise 11.8: Multiple Windows Demo");
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.setVisible(true);
public Exercise12_17() {
// Add buttons to the main frame
getContentPane().setLayout(new FlowLayout());
getContentPane().add(jbtCalc = new JButton("Simple Calculator"));
getContentPane().add(jbtMortgage = new JButton("Mortgage"));
// Register the main frame as listener for the buttons
jbtCalc.addActionListener(this);
jbtMortgage.addActionListener(this);
public void actionPerformed(ActionEvent e) {
String arg = e.getActionCommand();
if (e.getSource() instanceof JButton)
if ("Simple Calculator".equals(arg)) {
//show the MenuDemo frame
jbtCalc.setText("Hide Simple Calculator");
calcFrame.pack();
calcFrame.setVisible(true);
else if ("Hide Simple Calculator".equals(arg)) {
calcFrame.setVisible(false);
jbtCalc.setText("Simple Calculator");
else if ("Mortgage".equals(arg)) {
//show the CheckboxGroup frame
mortgageAppletFrame.pack();
jbtMortgage.setText("Hide Mortgage");
mortgageAppletFrame.setVisible(true);
else if ("Hide Mortgage".equals(arg)) {
mortgageAppletFrame.setVisible(false);
jbtMortgage.setText("Mortgage");
class MortgageApplet extends JApplet
implements ActionListener {
// Declare and create text fields for interest rate
// year, loan amount, monthly payment, and total payment
private JTextField jtfAnnualInterestRate = new JTextField();
private JTextField jtfNumOfYears = new JTextField();
private JTextField jtfLoanAmount = new JTextField();
private JTextField jtfMonthlyPayment = new JTextField();
private JTextField jtfTotalPayment = new JTextField();
// Declare and create a Compute Mortgage button
private JButton jbtComputeMortgage = new JButton("Compute Mortgage");
/** Initialize user interface */
public void init() {
// Set properties on the text fields
jtfMonthlyPayment.setEditable(false);
jtfTotalPayment.setEditable(false);
// Right align text fields
jtfAnnualInterestRate.setHorizontalAlignment(JTextField.RIGHT);
jtfNumOfYears.setHorizontalAlignment(JTextField.RIGHT);
jtfLoanAmount.setHorizontalAlignment(JTextField.RIGHT);
jtfMonthlyPayment.setHorizontalAlignment(JTextField.RIGHT);
jtfTotalPayment.setHorizontalAlignment(JTextField.RIGHT);
// Panel p1 to hold labels and text fields
JPanel p1 = new JPanel();
p1.setLayout(new GridLayout(5, 2));
p1.add(new Label("Annual Interest Rate"));
p1.add(jtfAnnualInterestRate);
p1.add(new Label("Number of Years"));
p1.add(jtfNumOfYears);
p1.add(new Label("Loan Amount"));
p1.add(jtfLoanAmount);
p1.add(new Label("Monthly Payment"));
p1.add(jtfMonthlyPayment);
p1.add(new Label("Total Payment"));
p1.add(jtfTotalPayment);
p1.setBorder(new
TitledBorder("Enter interest rate, year and loan amount"));
// Panel p2 to hold the button
JPanel p2 = new JPanel();
p2.setLayout(new FlowLayout(FlowLayout.RIGHT));
p2.add(jbtComputeMortgage);
// Add the components to the applet
getContentPane().add(p1, BorderLayout.CENTER);
getContentPane().add(p2, BorderLayout.SOUTH);
// Register listener
jbtComputeMortgage.addActionListener(this);
/** Handle the "Compute Mortgage" button */
public void actionPerformed(ActionEvent e) {
if (e.getSource() == jbtComputeMortgage) {
// Get values from text fields
double interest = (Double.valueOf(
jtfAnnualInterestRate.getText())).doubleValue();
int year =
(Integer.valueOf(jtfNumOfYears.getText())).intValue();
double loan =
(Double.valueOf(jtfLoanAmount.getText())).doubleValue();
// Create a mortgage object
Mortgage m = new Mortgage(interest, year, loan);
// Display monthly payment and total payment
jtfMonthlyPayment.setText(String.valueOf(m.monthlyPayment()));
jtfTotalPayment.setText(String.valueOf(m.totalPayment()));
class MenuDemo extends JFrame implements ActionListener {
// Text fields for Number 1, Number 2, and Result
private JTextField jtfNum1, jtfNum2, jtfResult;
// Buttons "Add", "Subtract", "Multiply" and "Divide"
private JButton jbtAdd, jbtSub, jbtMul, jbtDiv;
// Menu items "Add", "Subtract", "Multiply","Divide" and "Close"
private JMenuItem jmiAdd, jmiSub, jmiMul, jmiDiv, jmiClose;
/** Main method */
public static void main(String[] args) {
MenuDemo frame = new MenuDemo();
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.pack();
frame.setVisible(true);
/** Default constructor */
public MenuDemo() {
setTitle("Menu Demo");
// Create menu bar
JMenuBar jmb = new JMenuBar();
// Set menu bar to the frame
setJMenuBar(jmb);
// Add menu "Operation" to menu bar
JMenu operationMenu = new JMenu("Operation");
operationMenu.setMnemonic('O');
jmb.add(operationMenu);
// Add menu "Exit" in menu bar
JMenu exitMenu = new JMenu("Exit");
exitMenu.setMnemonic('E');
jmb.add(exitMenu);
// Add menu items with mnemonics to menu "Operation"
operationMenu.add(jmiAdd= new JMenuItem("Add", 'A'));
operationMenu.add(jmiSub = new JMenuItem("Subtract", 'S'));
operationMenu.add(jmiMul = new JMenuItem("Multiply", 'M'));
operationMenu.add(jmiDiv = new JMenuItem("Divide", 'D'));
exitMenu.add(jmiClose = new JMenuItem("Close", 'C'));
// Set keyboard accelerators
jmiAdd.setAccelerator(
KeyStroke.getKeyStroke(KeyEvent.VK_A, ActionEvent.CTRL_MASK));
jmiSub.setAccelerator(
KeyStroke.getKeyStroke(KeyEvent.VK_S, ActionEvent.CTRL_MASK));
jmiMul.setAccelerator(
KeyStroke.getKeyStroke(KeyEvent.VK_M, ActionEvent.CTRL_MASK));
jmiDiv.setAccelerator(
KeyStroke.getKeyStroke(KeyEvent.VK_D, ActionEvent.CTRL_MASK));
// Panel p1 to hold text fields and labels
JPanel p1 = new JPanel();
p1.setLayout(new FlowLayout());
p1.add(new JLabel("Number 1"));
p1.add(jtfNum1 = new JTextField(3));
p1.add(new JLabel("Number 2"));
p1.add(jtfNum2 = new JTextField(3));
p1.add(new JLabel("Result"));
p1.add(jtfResult = new JTextField(4));
jtfResult.setEditable(false);
// Panel p2 to hold buttons
JPanel p2 = new JPanel();
p2.setLayout(new FlowLayout());
p2.add(jbtAdd = new JButton("Add"));
p2.add(jbtSub = new JButton("Subtract"));
p2.add(jbtMul = new JButton("Multiply"));
p2.add(jbtDiv = new JButton("Divide"));
// Add panels to the frame
getContentPane().setLayout(new BorderLayout());
getContentPane().add(p1, BorderLayout.CENTER);
getContentPane().add(p2, BorderLayout.SOUTH);
// Register listeners
jbtAdd.addActionListener(this);
jbtSub.addActionListener(this);
jbtMul.addActionListener(this);
jbtDiv.addActionListener(this);
jmiAdd.addActionListener(this);
jmiSub.addActionListener(this);
jmiMul.addActionListener(this);
jmiDiv.addActionListener(this);
jmiClose.addActionListener(this);
/** Handle ActionEvent from buttons and menu items */
public void actionPerformed(ActionEvent e) {
String actionCommand = e.getActionCommand();
// Handle button events
if (e.getSource() instanceof JButton) {
if ("Add".equals(actionCommand))
calculate('+');
else if ("Subtract".equals(actionCommand))
calculate('-');
else if ("Multiply".equals(actionCommand))
calculate('*');
else if ("Divide".equals(actionCommand))
calculate('/');
else if (e.getSource() instanceof JMenuItem) {
// Handle menu item events
if ("Add".equals(actionCommand))
calculate('+');
else if ("Subtract".equals(actionCommand))
calculate('-');
else if ("Multiply".equals(actionCommand))
calculate('*');
else if ("Divide".equals(actionCommand))
calculate('/');
else if ("Close".equals(actionCommand))
System.exit(0);
/** Calculate and show the result in jtfResult */
private void calculate(char operator) {
// Obtain Number 1 and Number 2
int num1 = (Integer.parseInt(jtfNum1.getText().trim()));
int num2 = (Integer.parseInt(jtfNum2.getText().trim()));
int result = 0;
// Perform selected operation
switch (operator) {
case '+': result = num1 + num2;
break;
case '-': result = num1 - num2;
break;
case '*': result = num1 * num2;
break;
case '/': result = num1 / num2;
// Set result in jtfResult
jtfResult.setText(String.valueOf(result));
Original 2 button menu example....
// Exercise11_8.java: Create multiple windows
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
public class Exercise11_8 extends JFrame implements ActionListener {
// Declare and create a frame: an instance of MenuDemo
MenuDemo calcFrame = new MenuDemo();
// Declare and create a frame: an instance of RadioButtonDemo
RadioButtonDemo lightsFrame = new RadioButtonDemo();
// Declare two buttons for displaying frames
private JButton jbtCalc;
private JButton jbtLights;
public static void main(String[] args) {
Exercise11_8 frame = new Exercise11_8();
frame.setSize( 400, 70 );
frame.setTitle("Exercise 11.8: Multiple Windows Demo");
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.setVisible(true);
public Exercise11_8() {
// Add buttons to the main frame
getContentPane().setLayout(new FlowLayout());
getContentPane().add(jbtCalc = new JButton("Simple Calculator"));
getContentPane().add(jbtLights = new JButton("Traffic Lights"));
// Register the main frame as listener for the buttons
jbtCalc.addActionListener(this);
jbtLights.addActionListener(this);
public void actionPerformed(ActionEvent e) {
String arg = e.getActionCommand();
if (e.getSource() instanceof JButton)
if ("Simple Calculator".equals(arg)) {
//show the MenuDemo frame
jbtCalc.setText("Hide Simple Calculator");
calcFrame.pack();
calcFrame.setVisible(true);
else if ("Hide Simple Calculator".equals(arg)) {
calcFrame.setVisible(false);
jbtCalc.setText("Simple Calculator");
else if ("Traffic Lights".equals(arg)) {
//show the CheckboxGroup frame
lightsFrame.pack();
jbtLights.setText("Hide Traffic Lights");
lightsFrame.setVisible(true);
else if ("Hide Traffic Lights".equals(arg)) {
lightsFrame.setVisible(false);
jbtLights.setText("Traffic Lights");
class RadioButtonDemo extends JFrame
implements ItemListener {
// Declare radio buttons
private JRadioButton jrbRed, jrbYellow, jrbGreen;
// Declare a radio button group
private ButtonGroup btg = new ButtonGroup();
// Declare a traffic light display panel
private Light light;
/** Main method */
public static void main(String[] args) {
RadioButtonDemo frame = new RadioButtonDemo();
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.setSize(250, 170);
frame.setVisible(true);
/** Default constructor */
public RadioButtonDemo() {
setTitle("RadioButton Demo");
// Add traffic light panel to panel p1
JPanel p1 = new JPanel();
p1.setSize(200, 200);
p1.setLayout(new FlowLayout(FlowLayout.CENTER));
light = new Light();
light.setSize(40, 90);
p1.add(light);
// Put the radio button in Panel p2
JPanel p2 = new JPanel();
p2.setLayout(new FlowLayout());
p2.add(jrbRed = new JRadioButton("Red", true));
p2.add(jrbYellow = new JRadioButton("Yellow", false));
p2.add(jrbGreen = new JRadioButton("Green", false));
// Set keyboard mnemonics
jrbRed.setMnemonic('R');
jrbYellow.setMnemonic('Y');
jrbGreen.setMnemonic('G');
// Group radio buttons
btg.add(jrbRed);
btg.add(jrbYellow);
btg.add(jrbGreen);
// Place p1 and p2 in the frame
getContentPane().setLayout(new BorderLayout());
getContentPane().add(p1, BorderLayout.CENTER);
getContentPane().add(p2, BorderLayout.SOUTH);
// Register listeners for check boxes
jrbRed.addItemListener(this);
jrbYellow.addItemListener(this);
jrbGreen.addItemListener(this);
/** Handle checkbox events */
public void itemStateChanged(ItemEvent e) {
if (jrbRed.isSelected())
light.turnOnRed(); // Set red light
if (jrbYellow.isSelected())
light.turnOnYellow(); // Set yellow light
if (jrbGreen.isSelected())
light.turnOnGreen(); // Set green light
// Three traffic lights shown in a panel
class Light extends JPanel {
private boolean red;
private boolean yellow;
private boolean green;
/** Default constructor */
public Light() {
turnOnGreen();
/** Set red light on */
public void turnOnRed() {
red = true;
yellow = false;
green = false;
repaint();
/** Set yellow light on */
public void turnOnYellow() {
red = false;
yellow = true;
green = false;
repaint();
/** Set green light on */
public void turnOnGreen() {
red = false;
yellow = false;
green = true;
repaint();
/** Display lights */
public void paintComponent(Graphics g) {
super.paintComponent(g);
if (red) {
g.setColor(Color.red);
g.fillOval(10, 10, 20, 20);
g.setColor(Color.black);
g.drawOval(10, 35, 20, 20);
g.drawOval(10, 60, 20, 20);
g.drawRect(5, 5, 30, 80);
else if (yellow) {
g.setColor(Color.yellow);
g.fillOval(10, 35, 20, 20);
g.setColor(Color.black);
g.drawRect(5, 5, 30, 80);
g.drawOval(10, 10, 20, 20);
g.drawOval(10, 60, 20, 20);
else if (green) {
g.setColor(Color.green);
g.fillOval(10, 60, 20, 20);
g.setColor(Color.black);
g.drawRect(5, 5, 30, 80);
g.drawOval(10, 10, 20, 20);
g.drawOval(10, 35, 20, 20);
else {
g.setColor(Color.black);
g.drawRect(5, 5, 30, 80);
g.drawOval(10, 10, 20, 20);
g.drawOval(10, 35, 20, 20);
g.drawOval(10, 60, 20, 20);
/** Set preferred size */
public Dimension getPreferredSize() {
return new Dimension(40, 90);
class MenuDemo extends JFrame implements ActionListener {
// Text fields for Number 1, Number 2, and Result
private JTextField jtfNum1, jtfNum2, jtfResult;
// Buttons "Add", "Subtract", "Multiply" and "Divide"
private JButton jbtAdd, jbtSub, jbtMul, jbtDiv;
// Menu items "Add", "Subtract", "Multiply","Divide" and "Close"
private JMenuItem jmiAdd, jmiSub, jmiMul, jmiDiv, jmiClose;
/** Main method */
public static void main(String[] args) {
MenuDemo frame = new MenuDemo();
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.pack();
frame.setVisible(true);
/** Default constructor */
public MenuDemo() {
setTitle("Menu Demo");
// Create menu bar
JMenuBar jmb = new JMenuBar();
// Set menu bar to the frame
setJMenuBar(jmb);
// Add menu "Operation" to menu bar
JMenu operationMenu = new JMenu("Operation");
operationMenu.setMnemonic('O');
jmb.add(operationMenu);
// Add menu "Exit" in menu bar
JMenu exitMenu = new JMenu("Exit");
exitMenu.setMnemonic('E');
jmb.add(exitMenu);
// Add menu items with mnemonics to menu "Operation"
operationMenu.add(jmiAdd= new JMenuItem("Add", 'A'));
operationMenu.add(jmiSub = new JMenuItem("Subtract", 'S'));
operationMenu.add(jmiMul = new JMenuItem("Multiply", 'M'));
operationMenu.add(jmiDiv = new JMenuItem("Divide", 'D'));
exitMenu.add(jmiClose = new JMenuItem("Close", 'C'));
// Set keyboard accelerators
jmiAdd.setAccelerator(
KeyStroke.getKeyStroke(KeyEvent.VK_A, ActionEvent.CTRL_MASK));
jmiSub.setAccelerator(
KeyStroke.getKeyStroke(KeyEvent.VK_S, ActionEvent.CTRL_MASK));
jmiMul.setAccelerator(
KeyStroke.getKeyStroke(KeyEvent.VK_M, ActionEvent.CTRL_MASK));
jmiDiv.setAccelerator(
KeyStroke.getKeyStroke(KeyEvent.VK_D, ActionEvent.CTRL_MASK));
// Panel p1 to hold text fields and labels
JPanel p1 = new JPanel();
p1.setLayout(new FlowLayout());
p1.add(new JLabel("Number 1"));
p1.add(jtfNum1 = new JTextField(3));
p1.add(new JLabel("Number 2"));
p1.add(jtfNum2 = new JTextField(3));
p1.add(new JLabel("Result"));
p1.add(jtfResult = new JTextField(4));
jtfResult.setEditable(false);
// Panel p2 to hold buttons
JPanel p2 = new JPanel();
p2.setLayout(new FlowLayout());
p2.add(jbtAdd = new JButton("Add"));
p2.add(jbtSub = new JButton("Subtract"));
p2.add(jbtMul = new JButton("Multiply"));
p2.add(jbtDiv = new JButton("Divide"));
// Add panels to the frame
getContentPane().setLayout(new BorderLayout());
getContentPane().add(p1, BorderLayout.CENTER);
getContentPane().add(p2, BorderLayout.SOUTH);
// Register listeners
jbtAdd.addActionListener(this);
jbtSub.addActionListener(this);
jbtMul.addActionListener(this);
jbtDiv.addActionListener(this);
jmiAdd.addActionListener(this);
jmiSub.addActionListener(this);
jmiMul.addActionListener(this);
jmiDiv.addActionListener(this);
jmiClose.addActionListener(this);
/** Handle ActionEvent from buttons and menu items */
public void actionPerformed(ActionEvent e) {
String actionCommand = e.getActionCommand();
// Handle button events
if (e.getSource() instanceof JButton) {
if ("Add".equals(actionCommand))
calculate('+');
else if ("Subtract".equals(actionCommand))
calculate('-');
else if ("Multiply".equals(actionCommand))
calculate('*');
else if ("Divide".equals(actionCommand))
calculate('/');
else if (e.getSource() instanceof JMenuItem) {
// Handle menu item events
if ("Add".equals(actionCommand))
calculate('+');
else if ("Subtract".equals(actionCommand))
calculate('-');
else if ("Multiply".equals(actionCommand))
calculate('*');
else if ("Divide".equals(actionCommand))
calculate('/');
else if ("Close".equals(actionCommand))
System.exit(0);
/** Calculate and show the result in jtfResult */
private void calculate(char operator) {
// Obtain Number 1 and Number 2
int num1 = (Integer.parseInt(jtfNum1.getText().trim()));
int num2 = (Integer.parseInt(jtfNum2.getText().trim()));
int result = 0;
// Perform selected operation
switch (operator) {
case '+': result = num1 + num2;
break;
case '-': result = num1 - num2;
break;
case '*': result = num1 * num2;
break;
case '/': result = num1 / num2;
// Set result in jtfResult
jtfResult.setText(String.valueOf(result));
Mortgage applet code....
// MortgageApplet.java: Applet for computing mortgage payments
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import javax.swing.border.TitledBorder;
public class MortgageApplet extends JApplet
implements ActionListener {
// Declare and create text fields for interest rate
// year, loan amount, monthly payment, and total payment
private JTextField jtfAnnualInterestRate = new JTextField();
private JTextField jtfNumOfYears = new JTextField();
private JTextField jtfLoanAmount = new JTextField();
private JTextField jtfMonthlyPayment = new JTextField();
private JTextField jtfTotalPayment = new JTextField();
// Declare and create a Compute Mortgage button
private JButton jbtComputeMortgage = new JButton("Compute Mortgage");
/** Initialize user interface */
public void init() {
// Set properties on the text fields
jtfMonthlyPayment.setEditable(false);
jtfTotalPayment.setEditable(false);
// Right align text fields
jtfAnnualInterestRate.setHorizontalAlignment(JTextField.RIGHT);
jtfNumOfYears.setHorizontalAlignment(JTextField.RIGHT);
jtfLoanAmount.setHorizontalAlignment(JTextField.RIGHT);
jtfMonthlyPayment.setHorizontalAlignment(JTextField.RIGHT);
jtfTotalPayment.setHorizontalAlignment(JTextField.RIGHT);
// Panel p1 to hold labels and text fields
JPanel p1 = new JPanel();
p1.setLayout(new GridLayout(5, 2));
p1.add(new Label("Annual Interest Rate"));
p1.add(jtfAnnualInterestRate);
p1.add(new Label("Number of Years"));
p1.add(jtfNumOfYears);
p1.add(new Label("Loan Amount"));
p1.add(jtfLoanAmount);
p1.add(new Label("Monthly Payment"));
p1.add(jtfMonthlyPayment);
p1.add(new Label("Total Payment"));
p1.add(jtfTotalPayment);
p1.setBorder(new
TitledBorder("Enter interest rate, year and loan amount"));
// Panel p2 to hold the button
JPanel p2 = new JPanel();
p2.setLayout(new FlowLayout(FlowLayout.RIGHT));
p2.add(jbtComputeMortgage);
// Add the components to the applet
getContentPane().add(p1, BorderLayout.CENTER);
getContentPane().add(p2, BorderLayout.SOUTH);
// Register listener
jbtComputeMortgage.addActionListener(this);
/** Handle the "Compute Mortgage" button */
public void actionPerformed(ActionEvent e) {
if (e.getSource() == jbtComputeMortgage) {
// Get values from text fields
double interest = (Double.valueOf(
jtfAnnualInterestRate.getText())).doubleValue();
int year =
(Integer.valueOf(jtfNumOfYears.getText())).intValue();
double loan =
(Double.valueOf(jtfLoanAmount.getText())).doubleValue();
// Create a mortgage object
Mortgage m = new Mortgage(interest, year, loan);
// Display monthly payment and total payment
jtfMonthlyPayment.setText(String.valueOf(m.monthlyPayment()));
jtfTotalPayment.setText(String.valueOf(m.totalPayment()));
}Does it have to be an applet?
If you want the same behaviour as in the code with traffic lights, change
class MortgageApplet extends JApplet implements ActionListener {
to
class MortgageApplet extends JFrame implements ActionListener {
and change
public void init() {
to
public MortgageApplet() { -
My iPod touch bluetooth cannot discover my iPad nor mac air, but it can discover other devices... I don't understand why. My Mac and my iPad can't discover it, as well...
Thanks for this... I actually wanted to pair my iPad with my iPod touch so I can use the keynote remote app in my iPod touch to control my keynote presentations... I was able to control my presentations through wifi... I wanted to use the bluetooth since internet connection is quite slow.. The app tells me I can connect through bluetooth with my iPad but sadly, it can't... I've been trying to pair them but the can't discover each other... :(
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Sign out of iTunes and sign back in and try again. The issue is being reported as being solved....
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HELP!! I just brought my iPhone home and went through the activation process. Everything was fine. Then all of a sudden, where the bars for service are... it says "Searching" and won't stop. I also can't get into anything. I press on the screen... nothing. I reset it twice... nothing. It's still doing it. I don't understand why and I can't speak to anyone in technical support right now. Has this happened to anyone else? I just want to cry because I bought this phone a few hours ago and it already is giving me crap! Someone help me!!!
it's a new account, but I was sending texts and everything was fine. now all of a sudden it keeps going on and off and won't let me do anything. Just says "searching"
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I am new to Final Cut Express and don't understand why I am unable to drag transitions into Canvas? Something wrong in my setup? It's not the overlays they are "on" so can anyone advise me please, by the way the "L" doesn't appear in the bottom left hand corner either? and by the way how can I get rid of that irritating Blue badge saying "AutoFill your contact details" all mine are in "address book" already!
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Dear
I try to create my Account ID....and i don't understand why i have to put payment? before my friend create Account ID don't have to put payment they still can create account ID... and now i buy iphone but i don't have credit card that mind i can't not do itHi,
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http://support.apple.com/kb/HT2534
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My Apple ID has been disabled, it won't let me updated my previous purchases. No reason for why it has been disabled or how to enable it again. I reset my password, security questions and billing info. Nothing… I even called Apple SUpport 1-800 # and they said they can't help me...Anybody has seen this before?...
You need to contact itunes support.
http://www.apple.com/support/contact/
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What is the file extension of your photos ?
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