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  • print a linear linked list into a table

    - by user1796970
    I am attempting to print some values i have stored into a LLL into a readable table. The data i have stored is the following : DEBBIE STARR F 3 W 1000.00 JOAN JACOBUS F 9 W 925.00 DAVID RENN M 3 H 4.75 ALBERT CAHANA M 3 H 18.75 DOUGLAS SHEER M 5 W 250.00 SHARI BUCHMAN F 9 W 325.00 SARA JONES F 1 H 7.50 RICKY MOFSEN M 6 H 12.50 JEAN BRENNAN F 6 H 5.40 JAMIE MICHAELS F 8 W 150.00 i have stored each firstname, lastname, gender, tenure, payrate, and salary into their own List. And would like to be able to print them out in the same format that they are viewed on the text file i read them in from. i have messed around with a few methods that allow me to traverse and print the Lists, but i end up with ugly output. . . here is my code for the storage of the text file and the format i would like to print out: public class Payroll { private LineWriter lw; private ObjectList output; ListNode input; private ObjectList firstname, lastname, gender, tenure, rate, salary; public Payroll(LineWriter lw) { this.lw = lw; this.firstname = new ObjectList(); this.lastname = new ObjectList(); this.gender = new ObjectList(); this.tenure = new ObjectList(); this.rate = new ObjectList(); this.salary = new ObjectList(); this.output = new ObjectList(); this.input = new ListNode(); } public void readfile() { File file = new File("payfile.txt"); try{ Scanner scanner = new Scanner(file); while(scanner.hasNextLine()) { String line = scanner.nextLine(); Scanner lineScanner = new Scanner(line); lineScanner.useDelimiter("\\s+"); while(lineScanner.hasNext()) { firstname.insert1(lineScanner.next()); lastname.insert1(lineScanner.next()); gender.insert1(lineScanner.next()); tenure.insert1(lineScanner.next()); rate.insert1(lineScanner.next()); salary.insert1(lineScanner.next()); } } }catch(FileNotFoundException e) {e.printStackTrace();} } public void printer(LineWriter lw) { String msg = " FirstName " + " LastName " + " Gender " + " Tenure " + " Pay Rate " + " Salary "; output.insert1(msg); System.out.println(output.getFirst()); System.out.println(" " + firstname.getFirst() + " " + lastname.getFirst() + "\t" + gender.getFirst() + "\t" + tenure.getFirst() + "\t" + rate.getFirst() + "\t" + salary.getFirst()); } }

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  • FindBugs controversal description

    - by Tom Brito
    Am I understanding it wrong, or is the description wrong? Equals checks for noncompatible operand (EQ_CHECK_FOR_OPERAND_NOT_COMPATIBLE_WITH_THIS) This equals method is checking to see if the argument is some incompatible type (i.e., a class that is neither a supertype nor subtype of the class that defines the equals method). For example, the Foo class might have an equals method that looks like: public boolean equals(Object o) { if (o instanceof Foo) return name.equals(((Foo)o).name); else if (o instanceof String) return name.equals(o); else return false; This is considered bad practice, as it makes it very hard to implement an equals method that is symmetric and transitive. Without those properties, very unexpected behavoirs are possible. From: http://findbugs.sourceforge.net/bugDescriptions.html#EQ_CHECK_FOR_OPERAND_NOT_COMPATIBLE_WITH_THIS The description says that the Foo class might have an aquals method like that, and after it says that "This is considered bad practice". I'm not getting the "right way".. How should the following method be to be right? @Override public boolean equals(Object obj) { if (obj instanceof DefaultTableModel) return model.equals((DefaultTableModel)obj); else return false; }

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  • How to implement SAML SSO

    - by A_M
    How is SAML SSO typically implemented? I've read this about using SAML with Google Apps, and the wikipedia entry on SAML. The wikipedia entry talks about responding with forms containing details of the SAMLRequest and SAMLResponse. Does this mean that the user has to physically submit the form in order to proceed with the single sign on? The google entry talks about using redirects, which seems more seemless to me. However, it also talks about using a form for the response which the user must submit (although it does talk about using JavaScript to automatically submit the form). Is this the standard way of doing this? Using redirects and JavaScript for form submission? Does anyone know of any other good resources about how to go about implementing SSO between a Windows Domain and a J2EE web application. The web application is on a separate network/domain. My client wants to use CA Siteminder (with SAML).

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  • android linear layout solution

    - by dykzei
    ![alt text][1] [1]: http://s48.radikal.ru/i120/1005/ff/6e439e04bbc8.jpg hi what i'm trying to achieve is #1 but what i get is #2 it seems linear layout stacks with height of it's first element and shrinks second's element height to that. the xml for those is the following: <?xml version="1.0" encoding="utf-8"?> android:layout_weight="5" / android:text="Aaa aaaaa aaa aaaaa, aaaaaaa aaa aaa a, aaa aa aaaaaaa aaa aa. Aaa aaaaa aaa aaaaa, aaaaaaa aaa aaa a, aaa aa aaaaaaa aaa aa. Aaa aaaaa aaa aaaaa, aaaaaaa aaa aaa a, aaa aa aaaaaaa aaa aa. Aaa aaaaa aaa aaaaa, aaaaaaa aaa aaa a, aaa aa aaaaaaa aaa aa. Aaa aaaaa aaa aaaaa, aaaaaaa aaa aaa a, aaa aa aaaaaaa aaa aa. Aaa aaaaa aaa aaaaa, aaaaaaa aaa aaa a, aaa aa aaaaaaa aaa aa." /

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  • How To Run integrational Tests

    - by Vladimir
    In our project we have a plenty of Unit Tests. They help to keep project rather well-tested. Besides them we have a set of tests which are unit tests, but depends on some kind of external resource. We call them external tests. They can access web-service sometimes or similar. While unit tests is easy to run the integrational tests couldn't pass sometimes - for example due to timeout error. Also these tests can take too much time to run. Currently we keep integration/external unit tests just to run them when developing corresponding functionality. For plain unit tests we use TeamCIty for continuous integration. How do you run the integration unit tests and when do you run them?

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  • Message Queue or Scheduler

    - by Walter White
    Hi all, I am currently using Quartz Scheduler for asynchronous tasks such as sending an email when an exception occurs, sending an email from the web interface, or periodically analyzing traffic. Should I use a message queue for sending an email? Is it any more efficient or correct to do it that way? The scheduler approach works just fine. If I use a queue and the email failed to send, is it possible for the queue to retry sending the email at a later time? The queue approach looks simpler than the scheduler for tasks that need to happen immediately, but for scheduler tasks, the scheduler still, unless there is more to the queue than I am aware of. I have not yet used JMS, so this is what I have read. Walter

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  • Hibernate aliastobean

    - by cometta
    Query query = getHibernateTemplate().getSessionFactory().getCurrentSession().createSQLQuery( "select proj_employee.employee_no as employeeNo, ... .setResultTransformer(Transformers.aliasToBean(User.class)); Inside User.class does the property employeNo need to be in capital letter? private String EMPLOYEENO //get/set for EMPLOYEENO if i changed to small letter, it doesnt work. can anyone explain why must be in capital letter?

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  • Jackson object mapping - map incoming JSON field to protected property in base class

    - by Pete
    We use Jersey/Jackson for our REST application. Incoming JSON strings get mapped to the @Entity objects in the backend by Jackson to be persisted. The problem arises from the base class that we use for all entities. It has a protected id property, which we want to exchange via REST as well so that when we send an object that has dependencies, hibernate will automatically fetch these dependencies by their ids. Howevery, Jackson does not access the setter, even if we override it in the subclass to be public. We also tried using @JsonSetter but to no avail. Probably Jackson just looks at the base class and sees ID is not accessible so it skips setting it... @MappedSuperclass public abstract class AbstractPersistable<PK extends Serializable> implements Persistable<PK> { @Id @GeneratedValue(strategy = GenerationType.AUTO) private PK id; public PK getId() { return id; } protected void setId(final PK id) { this.id = id; } Subclasses: public class A extends AbstractPersistable<Long> { private String name; } public class B extends AbstractPersistable<Long> { private A a; private int value; // getter, setter // make base class setter accessible @Override @JsonSetter("id") public void setId(Long id) { super.setId(id); } } Now if there are some As in our database and we want to create a new B via the REST resource: @POST @Consumes(MediaType.APPLICATION_JSON) @Produces(MediaType.APPLICATION_JSON) @Transactional public Response create(B b) { if (b.getA().getId() == null) cry(); } with a JSON String like this {"a":{"id":"1","name":"foo"},"value":"123"}. The incoming B will have the A reference but without an ID. Is there any way to tell Jackson to either ignore the base class setter or tell it to use the subclass setter instead? I've just found out about @JsonTypeInfo but I'm not sure this is what I need or how to use it. Thanks for any help!

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  • Perl graph garbage collection usage

    - by Kevin
    Hi, I have built a tiny application in Perl that displays a graph over time. It graphs garbage collection usage over time. I use gnuplot to display the actual graph. This works fine if the time period is short, like a few hours. However, as the time increases (say a few days), the graph becomes difficult to read as the information gets crammed. Note that there is a tool called gcviewer which performs a similar function, it works by allowing you to choose the percentage of the graph. http://www.tagtraum.com/gcviewer.html Ideally I would like to take this further by adding the ability to "move" within the graph. I am not a developer but am good at scripting, so if there is some module in Perl which would provide this functionality it would be excellent! However, if it cannot be done in Perl, I am not averse to learning a new technology. Inputs are highly appreciated. Thanks!

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  • Need help receiving ByteArray data

    - by k80sg
    Hi folks, I am trying to receive byte array data from a machine. It sends out 3 different types of data structure each with different number of fields which consist of mostly int and a few floats, and byte sizes, the first being 320 bytes, 420 for the second type and 560 for the third. When the sending program is launched, it fires all 3 types of data simultaneouly with an interval of 1 sec. Example: Sending order: Pack1 - 320 bytes 1 sec later Pack2 - 420 bytes 1 sec later Pack3 - 560 bytes 1 sec later Pack1 - 320 bytes ... .. . How do I check the incoming byte size before passing it to: byte[] handsize = new byte[bytesize]; as the data I receive are all out of order, for instance using the following the read all int: System.out.println("Reading data in int format:" + " " + datainput.readInt()); I get many different sets of values whenever I run my prog although with some valid field data but they are all over the place. I am not too sure how exactly should I do it but I tried the following and apparently my data fields are not receiving in correct sequence: BufferedInputStream bais = new BufferedInputStream(requestSocket.getInputStream()); DataInputStream datainput = new DataInputStream(bais); byte[] handsize = new byte[560]; datainput.readFully(handsize); int n = 0; int intByte[] = new int[140]; for (int i = 0; i < 140 ; i++) { System.out.println("Reading data in int format:" + " " + datainput.readInt()); intByte[n] = datainput.readInt(); n = n + 1; System.out.println("The value in array is:" + intByte[0]); System.out.println("The value in array is:" + intByte[1]); System.out.println("The value in array is:" + intByte[2]); System.out.println("The value in array is:" + intByte[3]); Also from the above code, the order of the values printed out with System.out.println("Reading data in int format:" + " " + datainput.readInt()); and System.out.println("The value in array is:" + intByte[0]); System.out.println("The value in array is:" + intByte[1]); are different. Any help will be appreciated. Thanks

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  • Mock versus Implementation. How to share both approaches in a single Test class ?

    - by Arthur Ronald F D Garcia
    Hi, See the following Mock Test by using Spring/Spring-MVC public class OrderTest { // SimpleFormController private OrderController controller; private OrderService service; private MockHttpServletRequest request; @BeforeMethod public void setUp() { request = new MockHttpServletRequest(); request.setMethod("POST"); Integer orderNumber = 421; Order order = new Order(orderNumber); // Set up a Mock service service = createMock(OrderService.class); service.save(order); replay(service); controller = new OrderController(); controller.setService(service); controller.setValidator(new OrderValidator()); request.addParameter("orderNumber", String.valueOf(orderNumber)); } @Test public void successSave() { controller.handleRequest(request, new MockHttpServletResponse()); // Our OrderService has been called by our controller verify(service); } @Test public void failureSave() { // Ops... our orderNumber is required request.removeAllParameters(); ModelAndView mav = controller.handleRequest(request, new MockHttpServletResponse()); BindingResult bindException = (BindingResult) mav.getModel().get(BindingResult.MODEL_KEY_PREFIX + "command"); assertEquals("Our Validator has thrown one FieldError", bindException.getAllErrors(), 1); } } As you can see, i do as proposed by Triple A pattern Arrange (setUp method) Act (controller.handleRequest) Assert (verify and assertEquals) But i would like to test both Mock and Implementation class (OrderService) by using this single Test class. So in order to retrieve my Implementation, i re-write my class as follows @ContextConfiguration(locations="/app.xml") public class OrderTest extends AbstractTestNGSpringContextTests { } So how should i write my single test to Arrange both Mock and Implementation OrderService without change my Test method (sucessSave and failureSave) I am using TestNG, but you can show in JUnit if you want regards,

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  • Should I use Vaadin Framework

    - by Maksim
    I just tried to play with Vaadin Framework and it seems to me very easy to use. Plus what I like about his framework is that it is built on top of GWT. What do you think, should I continue using this framework or it's better to stick with GWT.

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  • What is the performance hit of enabling sessions on Google App Engine?

    - by Spines
    What is the performance hit of enabling sessions on the Google App Engine? I just turned on <sessions-enabled>true</sessions-enabled> in my Google App Engine app and now my requests are consistently using 100 more ms of CPU time than before I enabled it. It also makes the user wait an additional 100ms for the server to respond on each request. This seems to be quite a significant cost, I'm not even calling getSession or using it in any way yet and it still adds this extra latency. Is there something I can do to speed this up?

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  • Sending Illegal XML Characters in Soap Request

    - by SK
    I am trying to send special (&, ' (single quote)) characters in the Soap Request. I am using axis 1.4. The webservice client is in weblogic server and the webservice server is an ibm mainframe (COBOL program). The request data from the client contains special character (& symbol) which is converted to &amp; I tried to enclose it with CDATA as <![CDATA[Some Name & Some Data ]]> which got converted to &lt;![CDATA[Some Name &amp; Some Data]]&gt; The webservice client is generated from wsdl, so I couldn't use CDATA api to construct the request. I am able to set it as string value, and it is getting converted. Any help on this would be greatly appreciated. Please let me know if you need any more information on this.

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  • how to stop directory structure from being viewable in J2EE apps

    - by Omnipresent
    in a J2EE app if user explicitly takes out the the ending page name then what is the best way to not show the directory structure? Example: /mycoolapp/somefolder/test.jsp /mycoolapp/somefolder/ -- this will show all the files under 'somefolder' What is the best way to redirect or show the user a page saying 'not where you belong'. I want to avoid providing index.jsp in all the folders/subfolders of my application. Appserver being used is GlassFish. Also the app is using Struts2 framework, though not all of the code is in struts2. Some code is using traditional Servlets

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  • can i add the combobox into particular cell of the JTable?

    - by Venkats
    I want to add combobox into a cell of JTable. model=new DefaultTableModel(data,col); JTableHeader head=new JTableHeader(); head.setBackground(Color.BLUE); table=new JTable(model); table.add(head); JComboBox combo = new JComboBox(); combo.addItem("Names"); combo.addItem("Antony"); combo.addItem("Victor"); combo.addItem("Ramkumar"); table.add(combo); But i cant get the combobox in the cell. Is it possible to set combo box?

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  • which xml validator will work perfectly for multithreading project

    - by Sunil Kumar Sahoo
    Hi All, I have used jdom for xml validation against schema. The main problem there is that it gives an error FWK005 parse may not be called while parsing The main reason was that multiple of threads working for xerces validation at the same time. SO I got the solution that i have to lock that validation. which is not good So I want to know which xml validator works perfectly for multithreading project public static HashMap validate(String xmlString, Validator validator) { HashMap<String, String> map = new HashMap<String, String>(); long t1 = System.currentTimeMillis(); DocumentBuilder builder = null; try { //obtain lock to proceed // lock.lock(); try { builder = DocumentBuilderFactory.newInstance().newDocumentBuilder(); // Source source = new DOMSource(builder.parse(new ByteArrayInputStream(xmlString.getBytes()))); validator.validate(new StreamSource(new StringReader(xmlString))); map.put("ISVALID", "TRUE"); logger.info("We have successfuly validated the schema"); } catch (Exception ioe) { ioe.printStackTrace(); logger.error("NOT2 VALID STRING IS :" + xmlString); map.put("MSG", ioe.getMessage()); // logger.error("IOException while validating the input XML", ioe); } logger.info(map); long t2 = System.currentTimeMillis(); logger.info("XML VALIDATION TOOK:::" + (t2 - t1)); } catch (Exception e) { logger.error(e); } finally { //release lock // lock.unlock(); builder = null; } return map; } Thanks Sunil Kumar Sahoo

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  • Regex to represent "NOT" in a group

    - by Joe Ijam
    I have this Regex; <(\d+)(\w+\s\d+\s\d+(?::\d+){2})\s([\w\/.-])(.) What I want to do is to return FALSE(Not matched) if the third group is "MSWinEventLog" and returning "matched" for the rest. <166Apr 28 10:46:34 AMC the remaining phrase <11Apr 28 10:46:34 MSWinEventLog the remaining phrase <170Apr 28 10:46:34 Avantail the remaining phrase <171Apr 28 10:46:34 Avantail the remaining phrase <172Apr 28 10:46:34 AMC the remaining phrase <173Apr 28 10:46:34 AMC the remaining phrase <174Apr 28 10:46:34 Avantail the remaining phrase <175Apr 28 10:46:34 AMC the remaining phrase <176Apr 28 10:46:34 AMC the remaining phrase <177Apr 28 10:46:34 Avantail the remaining phrase <178Apr 28 10:46:34 AMC the remaining phrase <179Apr 28 10:46:34 Avantail the remaining phrase <180Apr 28 10:46:34 Avantail the remaining phrase How to put " NOT 'MSWinEventLog' " in the regex group ([\w\/.-]*) ? Note : The second phrase above should return "not matched"

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  • How to add DOCTYPE and xml processing instructions when marshalling with JAXB?

    - by Juha Syrjälä
    I am marshalling (serializing) JAXB beans to output stream. How can I add DOCTYPE declaration and xml processing instructions to ouput? I am doing currently marshalling like this: JAXBContext jaxbContext = JAXBContext.newInstance("com.example.package"); Marshaller marshaller = jaxbContext.createMarshaller(); marshaller.setProperty(Marshaller.JAXB_FORMATTED_OUTPUT, Boolean.TRUE); SchemaFactory schemaFactory = SchemaFactory.newInstance("http://www.w3.org/2001/XMLSchema"); Schema schema = schemaFactory.newSchema(schemaSource); marshaller.setSchema(schema); marshaller.marshal(object, output); I'd like have output that looks something like this: <?xml version="1.0" encoding="UTF-8"?> <!DOCTYPE Something SYSTEM "some.dtd"> <?xml-stylesheet type="text/xsl" href="some.xsl"?> JAXB bean are generated code so I don't want to change them. There are some undocumented tricks to add the xml processing instructions and doctype. But what is the preferred or right way to do this?

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  • Inserting the record into Database through JPA

    - by vinay123
    In my code I am using JSF - Front end , EJB-Middile Tier and JPA connect to DB.Calling the EJB using the Webservices.Using MySQL as DAtabase. I have created the Voter table in which I need to insert the record. I ma passing the values from the JSF to EJB, it is working.I have created JPA controller class (which automatcally generates the persistence code based on the data base classes) Ex: getting the entity manager etc., em = getEntityManager(); em.getTransaction().begin(); em.persist(voter); em.getTransaction().commit(); I have created the named query also: @NamedQuery(name = "Voter.insertRecord", query = "INSERT INTO Voter v values v.voterID = :voterID,v.password = :password,v.partSSN = :partSSN, v.address = :address, v.zipCode = :zipCode,v.ssn = :ssn, v.vFirstName = :vFirstName,v.vLastName = :vLastName,v.dob = :dob"), But still not able to insert the record? Can anyone help me in inserting the record into the Data base through JPA.(Persistence object)?

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  • Is it a bad idea if equals(null) throws NullPointerException instead?

    - by polygenelubricants
    The contract of equals with regards to null, is as follows: For any non-null reference value x, x.equals(null) should return false. This is rather peculiar, because if o1 != null and o2 == null, then we have: o1.equals(o2) // returns false o2.equals(o1) // throws NullPointerException The fact that o2.equals(o1) throws NullPointerException is a good thing, because it alerts us of programmer error. And yet, that error would not be catched if for various reasons we just switched it around to o1.equals(o2), which would just "silently fail" instead. So the questions are: Why is it a good idea that o1.equals(o2) should return false instead of throwing NullPointerException? Would it be a bad idea if wherever possible we rewrite the contract so that anyObject.equals(null) always throw NullPointerException instead?

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