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  • New to Java Programming - Error help

    - by JJJ
    I am going through a Java book and drafting the examples and have run into the following error when compiling this code. Any help would be appreciated thank you. Error: Main.java:3: class Addition is public, should be declared in a file named Addition.java public class Addition        ^ 1 error Code: import java.io.*; import java.util.Scanner; public class Addition {   public static void main(String[] args) { java.util.Scanner input = new java.util.Scanner(System.in);  int number1; int number2; int sum; System.out.print( "Enter first digit: " ); number1 = input.nextInt(); System.out.print( "Enter second digit:" ); number2 = input.nextInt(); sum = number1 + number2; System.out.printf( "Sum is %d\n, sum" );      } }

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  • WCF No EndPoint Listening

    - by doop
    I have a WCF Service hosted w/n IIS that has the following host header: WcfService.xxx.com. I'm able to successfully browse via IE to my service with the address subdomain.xxx.com/ServiceName.svc. I'm trying to consume the WCF Service via a ASP.NET Web application that has the following host header subdomain2.xxx.com. I've added the service reference correctly in the web.config to /WcfService.xxx.com/ServiceName.svc, but get the error(s): "The remote name could not be resolved: 'WcfService.xxx.com'" "There was no endpoint listening at http://WcfService.xxx.com/ServiceName.svc that could accept the message. This is often caused by an incorrect address or SOAP action" Any direction/help would be appreciated.

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  • How send html mail using linux command line

    - by Diesel Draft
    Hi, I need send mail with html format. I have only linux comand line and command "mail". Currently have used: echo "To: [email protected]" > /var/www/report.csv echo "Subject: Subject" >> /var/www/report.csv echo "Content-Type: text/html; charset=\"us-ascii\"" >> /var/www/report.csv echo "<html>" >> /var/www/report.csv mysql -u ***** -p***** -H -e "select * from users LIMIT 20" dev >> /var/www/report.csv echo "</html>" >> /var/www/report.csv mail -s "Built notification" [email protected] < /var/www/report.csv But in my mail-agent i get only plain/text.

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  • Devise authenticating with username instead of email

    - by teknull
    I'm new to Devise and have it working fine by using an email address as the authentication key. However, I have a use case which requires a username instead and I can't seem to get it working. I've added a string column, "username" to the users table, changed the fields from :email to :username in the sign-in form, and have changed the authentication key in devise.rb to :username yet when I go to sign in I'm met with this prompt: "Please enter an email address". What am I doing wrong? **new.html.erb** <div><%= f.label :username %><br /> <%= f.email_field :username %></div> **User.rb** class User < ActiveRecord::Base # Include default devise modules. Others available are: # :token_authenticatable, :encryptable, :confirmable, :lockable, :timeoutable and :omniauthable devise :database_authenticatable, :registerable, :recoverable, :rememberable, :trackable, :validatable, :authentication_keys => [:username] # Setup accessible (or protected) attributes for your model attr_accessible :email, :password, :password_confirmation, :remember_me, :username # attr_accessible :title, :body end **devise.rb** config.authentication_keys = [ :username ]

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  • A roadmap to learn PHP efficiently

    - by Goma
    I have been always confused when I want to start learning PHP. I got afraid of learning any bad habbits or things that could lead to unsecure applications. If you can help and hope you can, I would like to ask you experts in PHP to help me and put a roadmap for me from the beginning. It would be better if it is a series of books so when I finish a book I go to the next or a series of videos or whatever. No worries about how much the books may cost, most importantly that I will learn the right things. Thanks.

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  • Effective Data Validation

    - by John Conde
    What's an effective way to handle data validation, say, from a form submission? Originally I had a bunch of if statements that checked each value and collected invalid values in an array for later retrieval (and listing). // Store errors here $errors = array(); // Hypothetical check if a string is alphanumeric if (!preg_match('/^[a-z\d]+$/i', $fieldvalue)) { $errors[$fieldname] = 'Please only use letters and numbers for your street address'; } // etc... What I did next was create a class that handles various data validation scenarios and store the results in an internal array. After data validation was complete I would check to see if any errors occurred and handle accordingly: class Validation { private $errorList = array(); public function isAlphaNumeric($string, $field, $msg = '') { if (!preg_match('/^[a-z\d]+$/i', $string)) { $this->errorList[$field] = $msg; } } // more methods here public function creditCard($cardNumber, $field, $msg = '') { // Validate credit card number } // more methods here public function hasErrors() { return count($this->errorList); } } /* Client code */ $validate = new Validation(); $validate->isAlphaNumeric($fieldvalue1, $fieldname1, 'Please only use letters and numbers for your street address'); $validate->creditCard($fieldvalue2, $fieldname2, 'Please enter a valid credit card number'); if ($validate->hasErrors()) { // Handle as appropriate } Naturally it didn't take long before this class became bloated with the virtually unlimited types of data to be validated. What I'm doing now is using decorators to separate the different types of data into their own classes and call them only when needed leaving generic validations (i.e. isAlphaNumeric()) in the base class: class Validation { private $errorList = array(); public function isAlphaNumeric($string, $field, $msg = '') { if (!preg_match('/^[a-z\d]+$/i', $string)) { $this->errorList[$field] = $msg; } } // more generic methods here public function setError($field, $msg = '') { $this->errorList[$field] = $msg; } public function hasErrors() { return count($this->errorList); } } class ValidationCreditCard { protected $validate; public function __construct(Validation $validate) { $this->validate = $validate; } public function creditCard($cardNumber, $field, $msg = '') { // Do validation // ... // if there is an error $this->validate->setError($field, $msg); } // more methods here } /* Client code */ $validate = new Validation(); $validate->isAlphaNumeric($fieldvalue, $fieldname, 'Please only use letters and numbers for your street address'); $validateCC = new ValidationCreditCard($validate); $validateCC->creditCard($fieldvalue2, $fieldname2, 'Please enter a valid credit card number'); if ($validate->hasErrors()) { // Handle as appropriate } Am I on the right track? Or did I just complicate data validation more then I needed to?

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  • ssh via putty using hostname in opensuse

    - by Ashutosh
    Hi All, I am using opensuse 11.3 and it is connected to DHCP network. I am using putty to connect top machine from window with command: putty -ssh user@ip-address (it works fine) but when trying to connect using hostname it fails to resolve: putty -ssh user@ Every time I want to connect to machine i need to check its ip first and then connect via putty, but when want to connect using hostname it fails and says not able to resolve. Is there a way around so that i can use a common hostname for Linux machine without worrying about its IP address which changes after every reboot? Thanks for reply. Regards, Ashutosh

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  • Partners - There's a Virtual Seat Awaiting You

    - by Get_Specialized!
    That's right; no need to book travel, wait in airport lines or deal with expenses afterwards! Leave the luggage at home and just log on. Attend the LIVE Oracle FY13 PartnerNetwork Kickoff June 26th/27th. from your own location. Why wait, it just takes a moment to register for your region: NAS  - Tuesday, June 26 @ 8:30 am PT  EMEA - Tuesday, June 26 @ 2:00 pm BST LAD - Tuesday, June 26 @ 2:00pm EDT (Miami) / 3:00pm BRT (Sao Paulo) Japan - Wednesday, June 27 @ 10:00 am JST APAC - Wednesday, June 27 @ 8:30 am IST (Bangalore) / 11:00 am SGT (Singapore), 1:00 pm AEST (Sydney) Your further invited to interact in the conversation and bring forth questions to the Oracle PartnerNetwork on Twitter

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  • CIOs: Stop Mandating Training

    - by merrillaldrich
    I love to learn about new technology, and I especially love a long deep-dive technical session with a real expert or a well-crafted, inches thick technical book. Even if either one is expensive. Learning is probably my favorite thing to do. Yet I stand before you with an appeal: Stop “sending people to training.” Why would I say such a thing? Because failure is baked right into that very phrase: “sending people to training.” Death by Training Most of us in the IT world have probably experienced this...(read more)

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  • In ASP.NET MVC Should A Form Post To Itself Or Another Action?

    - by Sohnee
    Which of these two scenario's is best practice in ASP.NET MVC? 1 Post to self In the view you use using (Html.BeginForm) { ... } And in the controller you have [HttpGet] public ActionResult Edit(int id) [HttpPost] public ActionResult Edit(EditModel model) 2 Post from Edit to Save In the view you use using (Html.BeginForm("Save", "ControllerName")) { And in the controller you have [HttpGet] public ActionResult Edit(int id) [HttpPost] public ActionResult Save(EditModel model) Summary I can see the benefits of each of these, the former gives you a more restful style, with the same address being used in conjunction with the correct HTTP verb (GET, POST, PUT, DELETE and so on). The latter has a URL schema that makes each address very specific. Which is the correct way to do this?

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  • Practicing buffer overflow attack in Ubuntu

    - by wakandan
    I am trying to learn to use buffer overflow attack in Ubuntu. Unfortunately, I cannot turn off Address Space Layout Randomization (ASLR) feature in this OS, which is turned on by default. I have tried some work around found in some fedora books: echo "0" > /proc/sys/kernel/randomize_va_space but for some reason the protection's still there. Please give me some suggestions. Thanks. [edit]Actually the above command was not successful, it said "Permission Denied", even with sudo. How can I fix that? [adding] I kept on getting segmetation fault error when it shows an address in stack. Is it related to non-executable stack in ubuntu :(?

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  • How do I submit a form using jquery (ajaxForm plugin) to an external site but not reload to a differ

    - by Scott
    Hi, I'm trying to create a form that sends the customer's name and email address to icontact (an email list application). All the values are correct for icontact and if I submit the form as usual, icontact responds that it added the email address. The success message loads in a new page from icontact's website. What I'd like to accomplish is that ajax would send the form and returns a success message within the current page, without sending the customer to a new page. Here is the test page: http://www.skhot.com/test/js-test/forms/index.php

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  • Please help, looking for any answer for long time :How to use SqlDataSource Control to work with Dro

    - by Shantanu Gupta
    I am trying to fetch a column value from a datasource when some value is selected from a dropdownlist on its change event. <asp:DropDownList ID="ddlCityName" runat="server" DataSourceID="dsCity" DataTextField="CityName" DataValueField="CityID" AutoPostBack="True" OnTextChanged="CityName_OnTextChanged"> </asp:DropDownList> <asp:SqlDataSource ID="dsCity" runat="server" ConnectionString="<%$ ConnectionStrings:GmapConnectionString %>" SelectCommand="SELECT * FROM [vcity]" ></asp:SqlDataSource> Here I want to fetch any other column's value that is not binded to a ddlCityName from sqldatasource. I have four columns in datasource i.e. name, id, address, phno. I want to fetch an address of a person who selects some value from ddl.

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  • List<Object> as a JRBeanCollectionDataSource to a Subreport

    - by Kiran
    am passing a List as a JRBeanCollectionDataSource to a Subreport. here Object is of Type A and B. A is having properties 'name' and 'address' and B is having property 'location'. if Object is of type A then i have display 'name' and 'address' in subreport. and if is of type B then i have to diaplay 'location' in subreport. i have to access a type of Object in a subreport, means is of which type (A or B)?. i have tried a lot but not found any solution. can anyone help me please. thanks in advance.

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  • Conditional Batch file renaming with mysql data

    - by Paul Stevens
    Hello, I wonder if anyone knows how could I rename multiple files, all of them originally named with same structure, and add some data extracted from a mysql DB according to specifics rules. For example I have 500 files named with this vars: ID NAME ADDRESS PHONE.wav = 1234567 PAULSIMON WESTDR122 9942213456.wav Now I need to rename files taking some data from the databases for each file, and append the data from a query appended to the filename. For example add the data resulting from a query Where some conditions match, and the data to build the query is taked from original file name, as ID or NAME. i other words, lets say that I want to build a query taking ID & NAME from file 1234567 PAULSIMON WESTDR123 9942213456.wav as WHERE statements to take another value as BirthDATE and add this to new filename, so final result should be: ID NAME ADDRESS PHONE BIRTHDATE.wav I will appreciate any help on this. I need this to be done on a LINUX server.

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  • Is it possible to use JavaScript to submit an unnamed form from outside an iFrame?

    - by Scott
    I know that may sound silly, but I'm trying to submit a form on a page inside an iFrame, from the parent site. Here's an example of the form: <form action="/add_email" method="post"> <div class="field"> <label for="newEmailAddress" style="width: auto">Add new email address</label> <input type="text" id="newEmailAddress" name="email" value="null" class="text-field" /> <input type="hidden" name="__app_key" value="null"/> <input type="submit" value="Add address and send activation email"> </div> </form> As you can see, the Submit button, and the form itself both lack a proper name or id, this is not something I have control over. (It's on an external website.) Any suggestions?

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  • Data for animation

    - by saadtaame
    Say you are using C/SDL for a 2D game project. It's often the case that people use a structure to represent a frame in an animation. The struct consists of an image and how much time the frame is supposed to be visible. Is this data sufficient to represent somewhat complex animatio? Is it a good idea to separate animation management code and animation data? Can somebody provide a link to animations tutorials that store animations in a file and retrieve them when needed. I read this in a book (AI game programming wisdom) but would like to see a real implementation.

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  • How do I detect server status in a port scanner java implementation

    - by akz
    I am writing a port scanner in Java and I want to be able to distinct the following 4 use cases: port is open port is open and server banner was read port is closed server is not live I have the following code: InetAddress address = InetAddress.getByName("google.com"); int[] ports = new int[]{21, 22, 23, 80, 443}; for (int i = 0; i < ports.length; i++) { int port = ports[i]; Socket socket = null; try { socket = new Socket(address, port); socket.setSoTimeout(500); System.out.println("port " + port + " open"); BufferedReader reader = new BufferedReader( new InputStreamReader(socket.getInputStream())); String line = reader.readLine(); if (line != null) { System.out.println(line); } socket.close(); } catch (SocketTimeoutException ex) { // port was open but nothing was read from input stream ex.printStackTrace(); } catch (ConnectException ex) { // port is closed ex.printStackTrace(); } catch (IOException e) { e.printStackTrace(); } finally { if (socket != null && !socket.isClosed()) { try { socket.close(); } catch (Exception e) { e.printStackTrace(); } } } } The problem is that I get a ConnectionException both when the port is closed and the server cannot be reached but with a different exception message: java.net.ConnectException: Connection timed out: connect when the connection was never established and java.net.ConnectException: Connection refused: connect when the port was closed so I cannot make the distinction between the two use cases without digging into the actual exception message. Same thing happens when I try a different approach for the socket creation. If I use: socket = new Socket(); socket.setSoTimeout(500); socket.connect(new InetSocketAddress(address, port), 1000); I have the same problem but with the SocketTimeoutException instead. I get a java.net.SocketTimeoutException: Read timed out if port was open but there was no banner to be read and java.net.SocketTimeoutException: connect timed out if server is not live or port is closed. Any ideas? Thanks in advance!

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  • Programming Entity Framework, 2nd Edition (EF4) Table of Contents

    We are closing in on finalizing the 2nd edition of Programming Entity Framework! Although the rough draft chapters are already available through Safari’s Rough Cuts program (here: http://oreilly.com/catalog/9780596807252) I have been editing and reshaping the content since those chapters were published. You can get the final print edition (August 15th or perhaps a bit earlier) at O’Reilly or pre-order it here on Amazon.com (here) (and elsewhere of course!) I believe that the book will...Did you know that DotNetSlackers also publishes .net articles written by top known .net Authors? We already have over 80 articles in several categories including Silverlight. Take a look: here.

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  • Discovering the default gateway without DHCP

    - by JavaRocky
    A crazy question, but is there anyway to discover the default gateway without DHCP? This would be for a device on a network which does not use DHCP which does not have an IP address as yet. I was thinking if I could discover the default gateway, then i could try to guess an unused ip address then broadcast on the network to see if it's being used. I may be asking for trouble i understand. E.g. if there is already a computer which has a static IP and is shutdown.

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  • How to handle inaccurate Google Maps locations?

    - by Azzizz81
    When I type in addresses in Google maps for locations in Asia, quite a lot of them are off by more than 200 metres. For example, "blk 85 bedok north road, singapore" is off by more than 300 metres. While I don't expect Google Maps to be spot on every time, sometimes the error is too great for certain use cases. What options do I have to handle inaccurate Google Maps locations in a web app? The web app should let the user enter an address or postal code as part of an entry and I will geocode the address and store the lat-long.

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  • IIS5, ASP.NET (3.5) Application and Visual Studio 2008

    - by Lakeshore
    I have a solution that was developed in VS 2008 that is configured to use IIS. I configure the Virtual directory in IIS the same way I have with other working solutions using IIS. When I either build and run the solution in VS 2008 or browse the virtual directory using IIS, I get the following error message. Internet Explorer cannot display the webpage What you can try: It appears you are not connected to the Internet, but you might want to try to reconnect to the Internet Retype the address Go back to the previous page. Most likely causes: You are not connected to the Internet The website is encountering problems There might be a typing error in the address. Why might this be?

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  • I need advice on creating animal 3D walk cycles in XNA

    - by Zetar
    I want to purchase a number of 3D models from TurboSquid and animate them in an XNA game. I wrote a lot of games from 1985-1999 and have recently become involved with XNA. Now I would like to port one of my old games to the XBOX. I do have a background in 3D animation; but that was years ago. What is the current method for animating a walk cycle with a 3D model and using it inside XNA? Is there a book, software or a tutorial that you can recommend? Thanks in advance and sorry for such a broad and currently naive question.

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  • Would you hire a computer scientist which refuses to use computers? [closed]

    - by blueberryfields
    Imagine that you're interviewing a brilliant CS grad. He's just finished school, has very high grades, and has been performing very well on the interview so far. You reach a point near the end, where you're starting to speak about terms of employment, salary, etc.., and you're trying to show off the environment he'll be working in. When you mention that programmers at your company have systems with two monitors, the interviewee stops you and informs you that he won't need a computer. He only ever writes code by hand, in a note-book, and relies on his phone for sending/receiving email. This is not something he's willing to budge on. Would you still hire him? How good would he have to be for you to hire him? What would you hire him to do, if you do hire him? (the student is modelling himself on E.W. Djikstra)

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  • Which database engines support IP addresses as a native type?

    - by Matt McClellan
    I'm trying to find databases with support for IP addresses as a native type (as opposed to storing as a string, or an unsigned integer, which at least one commenter has already pointed out won't work for IPv6). The primary reason I'm looking for this is ease of development. For example, sorting on a "native" IP address column would be correct (as opposed to when it's stored as a string). I would assume support for such a type would also include useful operations such as determining if an IP address is inside a specified network for use in WHERE clauses. The only one I'm aware of so far is PostgreSQL with its inet class. Does anyone have any others?

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