Using Arrays in JSF

Hi
Please help me with the below issue.
I am having an array which stores the details of employees. The size of this array is dynamic i.e., if a new employee is added the size of array is incremented by one. My requirement is to display the employee details present in this array in the front end(using h:outputText value="#{get the value from the array}").
Since I am new to JSF technology please guide me how to achieve this.

Hi
I have a doubt in using datatable for iterate over an array. i have to mention the "rows" attribute if i use the datatable. If my array is dynamically changing its size based on the updations i.e., if 10 employees are newly appointed this array size will be incremented by 10 and then the rows attribute also need to changed(incremented by 10 in this case). I am not sure about this but this is my doubt...Could you please clarify

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    Hi guys,
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    Erdo

    Hi Frank,
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    Regards,
    Erdo
    Edited by: erdo on 20.Mar.2013 10:21

  • Problem in displaying 2D array in JSF

    Hi All,
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    How to create a dynamic GUI at the Runtime using ADF or JSF in JDeveloper 11g.
    What I am trying to build is to allow the user to map one column to another at the run time.
    Say the column A has rows 1 to 10, and column B has rows 1 to 15.
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    Any help wil be appreciated.....
    Thnaks

    Oracle supports feedback form metalink was; "What you exactly want to approach is not possible in Htmldb"
    I can guess that it is not
    exactly possible since I looked at the forums and documantation etc. but
    couldnt find anything similar than this link; "http://www.oracle.com/technology/products/database/htmldb/howtos/tabular_form.h
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  • Help using arrays in java

    HI all,
    I am working on a program that will print out my initials 'A' and 'T' using arrays. I am asked to initialize the first intial to '*' and the second intial to '@'. I wrote the code but the output is wrong. Can someone help me by letting me know what I am doing wrong in my arrray?I just get back my array of 30X30. I also wrote a driver but when I run the program, I really appreciate it so much.
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                   for(int j=0;i< MAX;i++)
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                   for(int j=0;j <MAX;j++)
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                        System.out.println();
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    I am trying to write a program using a matrix. The size of the maxtrix should be 30X30. The first initial shoulld be initialized to '*' and the secind initial should be initialized to '@'. Both initials should be 30 characters high and 30 characters wide and the initials should also represent the uppercase letter of your initials. I know that the first initial's matrix needs to be filled up vertically and the second initial needs to be filled horizontally but the output is wrong....PLease Help!
    Message was edited by:
    apples03

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  • Using arrays in apex

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    If you find this information useful, please remember to mark the post "helpful" or "correct" so that others may benefit as well.

  • Using Arrays in a program

    First, I would like to thank everyone in this forum for all the help they have given me over the past few weeks. With that said, I am currently trying to alter the following code to accept and use arrays to end to produce three seperate results. The program now as three hard coded variables which are
    Amount = 200000.00;
    Term = 30;
    InterestRate = .0575;
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    import java.math.*;
    import java.text.*;
    import java.util.*;
    // The Payment class displays a predetermined monthly mortgage payment
    public class Payment
         public static void main(String[]arguments)
              //Creates Two Arrays for InterestRates and Terms
              double[] InterestRates = {.0535, .055, .0575};
              int[] Terms = {7, 15, 30};
              //Creates variables
              double Amount;
              int Term;
              double InterestRate;
              //Assigns values to variables
              Amount = 200000.00;
              Term = 30;
              InterestRate = .0575;
              //Alters the display format of Amount variable
              NumberFormat n = NumberFormat.getCurrencyInstance(Locale.US);
              String s = n.format(Amount);
              //Creates variables
              double MonthlyInterestRate;
              int TotalMonths;
              double Payment;
              //Assigns values to variables
              MonthlyInterestRate = InterestRate / 12;
              TotalMonths = Term * 12;
              Payment = Amount* MonthlyInterestRate / (1-(Math.pow((1+MonthlyInterestRate ),(-TotalMonths))));
              //Takes Payment variable and round answer to 2 decimal points
              BigDecimal bd = new BigDecimal(Payment);
    bd = bd.setScale(2, BigDecimal.ROUND_DOWN);
              //Instructions to display various varibles
              System.out.println("Cost of Mortgage "+ s);
              System.out.println("Length of Term " + Term);
              System.out.println("Interest Rate 5.75% ");
              System.out.println("The monthly payment of this loan is $" + bd);
              System.out.println();
              //Creates new set of variables
              double MonthlyInterest;
              double MonthlyPrincipal;
              double TotalInterestPaid;
              int NumberofPayments;
              //Creates Balance variable
              double Balance;
              //Initialization of Balance variable
              Balance = 200000;
              TotalInterestPaid = 0;
              NumberofPayments = 360;
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              do
              MonthlyInterest = Balance * (InterestRate / 12);
              MonthlyPrincipal = Payment - MonthlyInterest;
              Balance = Balance - MonthlyPrincipal;
              TotalInterestPaid = TotalInterestPaid + MonthlyInterest;
              NumberofPayments = NumberofPayments - 1;
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              BigDecimal bb = new BigDecimal(Balance);
    bb = bb.setScale(2, BigDecimal.ROUND_DOWN);
              BigDecimal tip = new BigDecimal(TotalInterestPaid);
                        tip = tip.setScale(2, BigDecimal.ROUND_UP);
              System.out.println("New Loan Balance " + bb);
              System.out.println();
              System.out.println("Total Interest Paid " + tip);
              System.out.println();
              System.out.println("Number of Payments remaining " + NumberofPayments);
              System.out.println();
              //The following lines of code pauses the loop to allow the user to read the output
              //The speed of th display can be adujusted to a wide variety of speeds
              try
                   Thread.sleep(400);
                   catch (InterruptedException exc)
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              while (NumberofPayments > 0);
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    Try this. It should give you some ideas. :)
    import java.math.BigDecimal;
    import java.text.NumberFormat;
    import java.util.Locale;
    // The Payment class displays a predetermined monthly mortgage payment
    public class Payment {
        public static final NumberFormat CURRENCY_FORMAT = NumberFormat.getCurrencyInstance(Locale.US);
        public static final double[] INTEREST_RATES = {.0535D, .055D, .0575D};
        public static final int[] TERMS = {7, 15, 30};
        public static final double AMOUNT = 200000.00;
        public static final int MONTHS_PER_YEAR = 12;
        public static void main(String[] arguments) {
            for (int t = 0; t < TERMS.length; t++) {
                for (int i = 0; i < INTEREST_RATES.length; i++) {
                    displayPayments(AMOUNT, INTEREST_RATES, TERMS[t]);
    private static void displayPayments(double amount, double interestRate, int term) {
    //Creates variables
    //Assigns values to variables
    double monthlyInterestRate = interestRate / MONTHS_PER_YEAR;
    int totalMonths = term * MONTHS_PER_YEAR;
    double payment = amount * monthlyInterestRate / (1 - Math.pow(1 + monthlyInterestRate, -totalMonths));
    //Instructions to display various varibles
    System.out.println("Cost of Mortgage " + CURRENCY_FORMAT.format(amount));
    System.out.println("Length of Term " + term);
    System.out.println("Interest Rate " + new BigDecimal(interestRate * 100).setScale(2, BigDecimal.ROUND_HALF_UP) + '%');
    System.out.println("The monthly payment of this loan is " + CURRENCY_FORMAT.format(payment));
    System.out.println();
    //Creates new set of variables
    double totalInterestPaid = 0.0D;
    //Creates balance variable, Initialization of balance variable
    double balance = amount;
    //Creates a loop that calculates the entire term of loan
    System.out.println("New Loan balance, Total Interest Paid, Number of Payments remaining");
    for (int numberofPayment = totalMonths; numberofPayment > 0; numberofPayment--) {
    double monthlyInterest = balance * monthlyInterestRate;
    double monthlyPrincipal = payment - monthlyInterest;
    balance -= monthlyPrincipal;
    totalInterestPaid += monthlyInterest;
    //Takes current balance and rounds the answer to two digits
    BigDecimal bb = new BigDecimal(balance);
    bb = bb.setScale(2, BigDecimal.ROUND_DOWN);
    BigDecimal tip = new BigDecimal(totalInterestPaid);
    tip = tip.setScale(2, BigDecimal.ROUND_UP);
    System.out.println(CURRENCY_FORMAT.format(bb.doubleValue()) + ", " +
    CURRENCY_FORMAT.format(tip.doubleValue()) + ", " +
    numberofPayment);
    System.out.println();
    //Ends Application

  • Using arrays in forms

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    Best regards.

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              Luis

    Sloppy of me. This is a bit better:
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    import java.util.Arrays;
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    return false;
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    if (!Arrays.equals(values, intArray.values))
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    return true;
    public int hashCode()
    return (values != null ? Arrays.hashCode(values) : 0);
    public String toString()
    StringBuilder builder = new StringBuilder();
    builder.append("OneBasedIntArray{");
    for (int i = 0; i < values.length; i++)
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              } catch(Exception e) {
                   e.printStackTrace();
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                        mailDoc.replaceItemValue("SendTo","Hayleigh S Mann/Norwich/MoneyCentre");
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                        mailDoc.send();
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                   }catch(Exception e){
                        e.printStackTrace();
                        return false;

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    public class A {
      public static void main(String[] args) {
        String str = Arrays.toString(args);
        System.out.println(str);
    :; java -cp . A abc 123 xxx
    [abc, 123, xxx]

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    at org.apache.coyote.tomcat5.CoyoteRequest.doGetSession(CoyoteRequest.java:2709)
    at org.apache.coyote.tomcat5.CoyoteRequest.getSession(CoyoteRequest.java:2482)
    at org.apache.coyote.tomcat5.CoyoteRequestFacade.getSession(CoyoteRequestFacade.java:871)
    at org.apache.coyote.tomcat5.CoyoteRequestFacade.getSession(CoyoteRequestFacade.java:882)
    at javax.servlet.http.HttpServletRequestWrapper.getSession(HttpServletRequestWrapper.java:248)
    at nl.captcha.servlet.SimpleCaptchaServlet.doGet(Unknown Source)
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:718)
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:831)
    What could be the reason?

  • Using pojos and jsf

    Hi guys
    I am trying to connect Pojos with jsf. I 've found that the problem is in the ejbs.
    I am using eclipse 3.1.1, jboss-4.0.4RC1 and myfaces.
    I think the application doesn't inicialize the context. Because all class work with servlet. I already have tested it.
    The error shows me
    0:20:29,981 ERROR [[jsp]] Servlet.service() for servlet jsp threw exception
    javax.faces.el.EvaluationException: Cannot get value for expression '#{PropiedadesBean.allProperties}'
         at org.apache.myfaces.el.ValueBindingImpl.getValue(ValueBindingImpl.java:397)
         at javax.faces.component.UIData.getValue(UIData.java:779)
         at javax.faces.component.UIData.createDataModel(UIData.java:545)
         at javax.faces.component.UIData.getDataModel(UIData.java:534)
         at javax.faces.component.UIData.getRowCount(UIData.java:103)
         at org.apache.myfaces.renderkit.html.HtmlTableRendererBase.encodeInnerHtml(HtmlTableRendererBase.java:124)
         at org.apache.myfaces.renderkit.html.HtmlTableRendererBase.encodeChildren(HtmlTableRendererBase.java:94)
         at javax.faces.component.UIComponentBase.encodeChildren(UIComponentBase.java:319)
         at javax.faces.webapp.UIComponentTag.encodeChildren(UIComponentTag.java:343)
         at javax.faces.webapp.UIComponentTag.doEndTag(UIComponentTag.java:251)
         at org.apache.myfaces.taglib.UIComponentBodyTagBase.doEndTag(UIComponentBodyTagBase.java:55)
         at org.apache.jsp.paginas.propiedades_jsp._jspx_meth_h_dataTable_0(org.apache.jsp.paginas.propiedades_jsp:196)
         at org.apache.jsp.paginas.propiedades_jsp._jspx_meth_h_form_0(org.apache.jsp.paginas.propiedades_jsp:145)
         at org.apache.jsp.paginas.propiedades_jsp._jspx_meth_f_view_0(org.apache.jsp.paginas.propiedades_jsp:113)
         at org.apache.jsp.paginas.propiedades_jsp._jspService(org.apache.jsp.paginas.propiedades_jsp:78)
         at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:97)
         at javax.servlet.http.HttpServlet.service(HttpServlet.java:810)
         at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:322)
         at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:314)
         at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:264)
         at javax.servlet.http.HttpServlet.service(HttpServlet.java:810)
         at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:252)
         at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
         at org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:672)
         at org.apache.catalina.core.ApplicationDispatcher.processRequest(ApplicationDispatcher.java:463)
         at org.apache.catalina.core.ApplicationDispatcher.doForward(ApplicationDispatcher.java:398)
         at org.apache.catalina.core.ApplicationDispatcher.forward(ApplicationDispatcher.java:301)
         at org.apache.myfaces.context.servlet.ServletExternalContextImpl.dispatch(ServletExternalContextImpl.java:415)
         at org.apache.myfaces.application.jsp.JspViewHandlerImpl.renderView(JspViewHandlerImpl.java:234)
         at org.apache.myfaces.lifecycle.LifecycleImpl.render(LifecycleImpl.java:352)
         at javax.faces.webapp.FacesServlet.service(FacesServlet.java:107)
         at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:252)
         at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
         at org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:672)
         at org.apache.catalina.core.ApplicationDispatcher.processRequest(ApplicationDispatcher.java:463)
         at org.apache.catalina.core.ApplicationDispatcher.doForward(ApplicationDispatcher.java:398)
         at org.apache.catalina.core.ApplicationDispatcher.forward(ApplicationDispatcher.java:301)
         at org.apache.jasper.runtime.PageContextImpl.doForward(PageContextImpl.java:693)
         at org.apache.jasper.runtime.PageContextImpl.forward(PageContextImpl.java:660)
         at org.apache.jsp.index_jsp._jspService(org.apache.jsp.index_jsp:49)
         at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:97)
         at javax.servlet.http.HttpServlet.service(HttpServlet.java:810)
         at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:322)
         at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:314)
         at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:264)
         at javax.servlet.http.HttpServlet.service(HttpServlet.java:810)
         at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:252)
         at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
         at org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:672)
         at org.apache.catalina.core.ApplicationDispatcher.processRequest(ApplicationDispatcher.java:463)
         at org.apache.catalina.core.ApplicationDispatcher.doForward(ApplicationDispatcher.java:398)
         at org.apache.catalina.core.ApplicationDispatcher.forward(ApplicationDispatcher.java:301)
         at org.apache.myfaces.context.servlet.ServletExternalContextImpl.dispatch(ServletExternalContextImpl.java:415)
         at org.apache.myfaces.application.jsp.JspViewHandlerImpl.renderView(JspViewHandlerImpl.java:234)
         at org.apache.myfaces.lifecycle.LifecycleImpl.render(LifecycleImpl.java:352)
         at javax.faces.webapp.FacesServlet.service(FacesServlet.java:107)
         at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:252)
         at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
         at org.apache.myfaces.component.html.util.ExtensionsFilter.doFilter(ExtensionsFilter.java:122)
         at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:202)
         at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
         at org.jboss.web.tomcat.filters.ReplyHeaderFilter.doFilter(ReplyHeaderFilter.java:96)
         at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:202)
         at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
         at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:213)
         at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:178)
         at org.jboss.web.tomcat.security.CustomPrincipalValve.invoke(CustomPrincipalValve.java:54)
         at org.jboss.web.tomcat.security.SecurityAssociationValve.invoke(SecurityAssociationValve.java:174)
         at org.jboss.web.tomcat.security.JaccContextValve.invoke(JaccContextValve.java:74)
         at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:126)
         at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:105)
         at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:107)
         at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:148)
         at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:868)
         at org.apache.coyote.http11.Http11BaseProtocol$Http11ConnectionHandler.processConnection(Http11BaseProtocol.java:663)
         at org.apache.tomcat.util.net.PoolTcpEndpoint.processSocket(PoolTcpEndpoint.java:527)
         at org.apache.tomcat.util.net.MasterSlaveWorkerThread.run(MasterSlaveWorkerThread.java:112)
         at java.lang.Thread.run(Unknown Source)
    Caused by: javax.faces.el.EvaluationException: org.jboss.jose.db.PropiedadesBean
         at org.apache.myfaces.el.PropertyResolverImpl.getValue(PropertyResolverImpl.java:78)
         at org.apache.myfaces.el.ELParserHelper$MyPropertySuffix.evaluate(ELParserHelper.java:532)
         at org.apache.commons.el.ComplexValue.evaluate(ComplexValue.java:145)
         at org.apache.myfaces.el.ValueBindingImpl.getValue(ValueBindingImpl.java:378)
         ... 77 more
    Caused by: javax.faces.el.EvaluationException: Bean: org.jboss.jose.db.PropiedadesBean, property: allProperties
         at org.apache.myfaces.el.PropertyResolverImpl.getProperty(PropertyResolverImpl.java:404)
         at org.apache.myfaces.el.PropertyResolverImpl.getValue(PropertyResolverImpl.java:71)
         ... 80 more
    Caused by: java.lang.reflect.InvocationTargetException
         at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
         at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
         at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
         at java.lang.reflect.Method.invoke(Unknown Source)
         at org.apache.myfaces.el.PropertyResolverImpl.getProperty(PropertyResolverImpl.java:400)
         ... 81 more
    Caused by: java.lang.NullPointerException
         at org.jboss.jose.db.PropiedadesBean.getAllProperties(PropiedadesBean.java:71)
         ... 86 more
    10:20:30,001 ERROR [[Faces Servlet]] Servlet.service() for servlet Faces Servlet threw exception
    javax.faces.FacesException: Cannot get value for expression '#{PropiedadesBean.allProperties}'
         at org.apache.myfaces.context.servlet.ServletExternalContextImpl.dispatch(ServletExternalContextImpl.java:421)
         at org.apache.myfaces.application.jsp.JspViewHandlerImpl.renderView(JspViewHandlerImpl.java:234)
         at org.apache.myfaces.lifecycle.LifecycleImpl.render(LifecycleImpl.java:352)
         at javax.faces.webapp.FacesServlet.service(FacesServlet.java:107)
         at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:252)
         at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
         at org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:672)
         at org.apache.catalina.core.ApplicationDispatcher.processRequest(ApplicationDispatcher.java:463)
         at org.apache.catalina.core.ApplicationDispatcher.doForward(ApplicationDispatcher.java:398)
         at org.apache.catalina.core.ApplicationDispatcher.forward(ApplicationDispatcher.java:301)
         at org.apache.jasper.runtime.PageContextImpl.doForward(PageContextImpl.java:693)
         at org.apache.jasper.runtime.PageContextImpl.forward(PageContextImpl.java:660)
         at org.apache.jsp.index_jsp._jspService(org.apache.jsp.index_jsp:49)
         at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:97)
         at javax.servlet.http.HttpServlet.service(HttpServlet.java:810)
         at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:322)
         at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:314)
         at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:264)
         at javax.servlet.http.HttpServlet.service(HttpServlet.java:810)
         at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:252)
         at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
         at org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:672)
         at org.apache.catalina.core.ApplicationDispatcher.processRequest(ApplicationDispatcher.java:463)
         at org.apache.catalina.core.ApplicationDispatcher.doForward(ApplicationDispatcher.java:398)
         at org.apache.catalina.core.ApplicationDispatcher.forward(ApplicationDispatcher.java:301)
         at org.apache.myfaces.context.servlet.ServletExternalContextImpl.dispatch(ServletExternalContextImpl.java:415)
         at org.apache.myfaces.application.jsp.JspViewHandlerImpl.renderView(JspViewHandlerImpl.java:234)
         at org.apache.myfaces.lifecycle.LifecycleImpl.render(LifecycleImpl.java:352)
         at javax.faces.webapp.FacesServlet.service(FacesServlet.java:107)
         at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:252)
         at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
         at org.apache.myfaces.component.html.util.ExtensionsFilter.doFilter(ExtensionsFilter.java:122)
         at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:202)
         at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
         at org.jboss.web.tomcat.filters.ReplyHeaderFilter.doFilter(ReplyHeaderFilter.java:96)
         at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:202)
         at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
         at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:213)
         at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:178)
         at org.jboss.web.tomcat.security.CustomPrincipalValve.invoke(CustomPrincipalValve.java:54)
         at org.jboss.web.tomcat.security.SecurityAssociationValve.invoke(SecurityAssociationValve.java:174)
         at org.jboss.web.tomcat.security.JaccContextValve.invoke(JaccContextValve.java:74)
         at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:126)
         at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:105)
         at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:107)
         at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:148)
         at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:868)
         at org.apache.coyote.http11.Http11BaseProtocol$Http11ConnectionHandler.processConnection(Http11BaseProtocol.java:663)
         at org.apache.tomcat.util.net.PoolTcpEndpoint.processSocket(PoolTcpEndpoint.java:527)
         at org.apache.tomcat.util.net.MasterSlaveWorkerThread.run(MasterSlaveWorkerThread.java:112)
         at java.lang.Thread.run(Unknown Source)
    Caused by: org.apache.jasper.JasperException: Cannot get value for expression '#{PropiedadesBean.allProperties}'
         at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:370)
         at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:314)
         at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:264)
         at javax.servlet.http.HttpServlet.service(HttpServlet.java:810)
         at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:252)
         at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
         at org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:672)
         at org.apache.catalina.core.ApplicationDispatcher.processRequest(ApplicationDispatcher.java:463)
         at org.apache.catalina.core.ApplicationDispatcher.doForward(ApplicationDispatcher.java:398)
         at org.apache.catalina.core.ApplicationDispatcher.forward(ApplicationDispatcher.java:301)
         at org.apache.myfaces.context.servlet.ServletExternalContextImpl.dispatch(ServletExternalContextImpl.java:415)
         ... 50 more
    10:20:30,022 ERROR [[jsp]] Servlet.service() for servlet jsp threw exception
    javax.faces.FacesException: Cannot get value for expression '#{PropiedadesBean.allProperties}'
         at org.apache.myfaces.context.servlet.ServletExternalContextImpl.dispatch(ServletExternalContextImpl.java:421)
         at org.apache.myfaces.application.jsp.JspViewHandlerImpl.renderView(JspViewHandlerImpl.java:234)
         at org.apache.myfaces.lifecycle.LifecycleImpl.render(LifecycleImpl.java:352)
         at javax.faces.webapp.FacesServlet.service(FacesServlet.java:107)
         at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:252)
         at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
         at org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:672)
         at org.apache.catalina.core.ApplicationDispatcher.processRequest(ApplicationDispatcher.java:463)
         at org.apache.catalina.core.ApplicationDispatcher.doForward(ApplicationDispatcher.java:398)
         at org.apache.catalina.core.ApplicationDispatcher.forward(ApplicationDispatcher.java:301)
         at org.apache.jasper.runtime.PageContextImpl.doForward(PageContextImpl.java:693)
         at org.apache.jasper.runtime.PageContextImpl.forward(PageContextImpl.java:660)
         at org.apache.jsp.index_jsp._jspService(org.apache.jsp.index_jsp:49)
         at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:97)
         at javax.servlet.http.HttpServlet.service(HttpServlet.java:810)
         at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:322)
         at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:314)
         at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:264)
         at javax.servlet.http.HttpServlet.service(HttpServlet.java:810)
         at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:252)
         at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
         at org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:672)
         at org.apache.catalina.core.ApplicationDispatcher.processRequest(ApplicationDispatcher.java:463)
         at org.apache.catalina.core.ApplicationDispatcher.doForward(ApplicationDispatcher.java:398)
         at org.apache.catalina.core.ApplicationDispatcher.forward(ApplicationDispatcher.java:301)
         at org.apache.myfaces.context.servlet.ServletExternalContextImpl.dispatch(ServletExternalContextImpl.java:415)
         at org.apache.myfaces.application.jsp.JspViewHandlerImpl.renderView(JspViewHandlerImpl.java:234)
         at org.apache.myfaces.lifecycle.LifecycleImpl.render(LifecycleImpl.java:352)
         at javax.faces.webapp.FacesServlet.service(FacesServlet.java:107)
         at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:252)
         at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
         at org.apache.myfaces.component.html.util.ExtensionsFilter.doFilter(ExtensionsFilter.java:122)
         at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:202)
         at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
         at org.jboss.web.tomcat.filters.ReplyHeaderFilter.doFilter(ReplyHeaderFilter.java:96)
         at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:202)
         at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
         at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:213)
         at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:178)
         at org.jboss.web.tomcat.security.CustomPrincipalValve.invoke(CustomPrincipalValve.java:54)
         at org.jboss.web.tomcat.security.SecurityAssociationValve.invoke(SecurityAssociationValve.java:174)
         at org.jboss.web.tomcat.security.JaccContextValve.invoke(JaccContextValve.java:74)
         at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:126)
         at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:105)
         at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:107)
         at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:148)
         at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:868)
         at org.apache.coyote.http11.Http11BaseProtocol$Http11ConnectionHandler.processConnection(Http11BaseProtocol.java:663)
         at org.apache.tomcat.util.net.PoolTcpEndpoint.processSocket(PoolTcpEndpoint.java:527)
         at org.apache.tomcat.util.net.MasterSlaveWorkerThread.run(MasterSlaveWorkerThread.java:112)
         at java.lang.Thread.run(Unknown Source)
    Caused by: org.apache.jasper.JasperException: Cannot get value for expression '#{PropiedadesBean.allProperties}'
         at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:370)
         at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:314)
         at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:264)
         at javax.servlet.http.HttpServlet.service(HttpServlet.java:810)
         at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:252)
         at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
         at org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:672)
         at org.apache.catalina.core.ApplicationDispatcher.processRequest(ApplicationDispatcher.java:463)
         at org.apache.catalina.core.ApplicationDispatcher.doForward(ApplicationDispatcher.java:398)
         at org.apache.catalina.core.ApplicationDispatcher.forward(ApplicationDispatcher.java:301)
         at org.apache.myfaces.context.servlet.ServletExternalContextImpl.dispatch(ServletExternalContextImpl.java:415)
         ... 50 more
    10:20:30,032 ERROR [[Faces Servlet]] Servlet.service() for servlet Faces Servlet threw exception
    javax.faces.FacesException: Cannot get value for expression '#{PropiedadesBean.allProperties}'
         at org.apache.myfaces.context.servlet.ServletExternalContextImpl.dispatch(ServletExternalContextImpl.java:421)
         at org.apache.myfaces.application.jsp.JspViewHandlerImpl.renderView(JspViewHandlerImpl.java:234)
         at org.apache.myfaces.lifecycle.LifecycleImpl.render(LifecycleImpl.java:352)
         at javax.faces.webapp.FacesServlet.service(FacesServlet.java:107)
         at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:252)
         at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
         at org.apache.myfaces.component.html.util.ExtensionsFilter.doFilter(ExtensionsFilter.java:122)
         at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:202)
         at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
         at org.jboss.web.tomcat.filters.ReplyHeaderFilter.doFilter(ReplyHeaderFilter.java:96)
         at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:202)
         at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
         at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:213)
         at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:178)
         at org.jboss.web.tomcat.security.CustomPrincipalValve.invoke(CustomPrincipalValve.java:54)
         at org.jboss.web.tomcat.security.SecurityAssociationValve.invoke(SecurityAssociationValve.java:174)
         at org.jboss.web.tomcat.security.JaccContextValve.invoke(JaccContextValve.java:74)
         at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:126)
         at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:105)
         at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:107)
         at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:148)
         at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:868)
         at org.apache.coyote.http11.Http11BaseProtocol$Http11ConnectionHandler.processConnection(Http11BaseProtocol.java:663)
         at org.apache.tomcat.util.net.PoolTcpEndpoint.processSocket(PoolTcpEndpoint.java:527)
         at org.apache.tomcat.util.net.MasterSlaveWorkerThread.run(MasterSlaveWorkerThread.java:112)
         at java.lang.Thread.run(Unknown Source)
    Caused by: javax.servlet.ServletException: Cannot get value for expression '#{PropiedadesBean.allProperties}'
         at javax.faces.webapp.FacesServlet.service(FacesServlet.java:121)
         at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:252)
         at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
         at org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:672)
         at org.apache.catalina.core.ApplicationDispatcher.processRequest(ApplicationDispatcher.java:463)
         at org.apache.catalina.core.ApplicationDispatcher.doForward(ApplicationDispatcher.java:398)
         at org.apache.catalina.core.ApplicationDispatcher.forward(ApplicationDispatcher.java:301)
         at org.apache.jasper.runtime.PageContextImpl.doForward(PageContextImpl.java:693)
         at org.apache.jasper.runtime.PageContextImpl.forward(PageContextImpl.java:660)
         at org.apache.jsp.index_jsp._jspService(org.apache.jsp.index_jsp:49)
         at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:97)
         at javax.servlet.http.HttpServlet.service(HttpServlet.java:810)
         at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:322)
         at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:314)
         at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:264)
         at javax.servlet.http.HttpServlet.service(HttpServlet.java:810)
         at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:252)
         at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
         at org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:672)
         at org.apache.catalina.core.ApplicationDispatcher.processRequest(ApplicationDispatcher.java:463)
         at org.apache.catalina.core.ApplicationDispatcher.doForward(ApplicationDispatcher.java:398)
         at org.apache.catalina.core.ApplicationDispatcher.forward(ApplicationDispatcher.java:301)
         at org.apache.myfaces.context.servlet.ServletExternalContextImpl.dispatch(ServletExternalContextImpl.java:415)
         ... 25 moreMy jsf is that
    <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
    <%@ page language="java" contentType="text/html; charset=ISO-8859-1"
        pageEncoding="ISO-8859-1"%>
    <%@ taglib uri="http://java.sun.com/jsf/core" prefix="f" %>
    <%@ taglib uri="http://java.sun.com/jsf/html" prefix="h" %>
    <html>
    <head>
    <meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
    <title>propiedad</title>
    </head>
    <body>
    <f:view>
         <h:form id ="Properties">
              <h:dataTable id ="Propiedades" value="#{PropiedadesBean.allProperties}" var="prop" border="1">
                   <h:column>
                        <f:facet name="header">
                             <h:outputText value="Referencia"></h:outputText>
                        </f:facet>
                        <h:outputText value="#{prop.referencia}"></h:outputText>
                   </h:column>
                   <h:column>
                        <f:facet name="header">
                             <h:outputText value="Habitaciones"></h:outputText>
                        </f:facet>                    
                        <h:outputText value="#{prop.nHabitaciones}"></h:outputText>
                   </h:column>
              </h:dataTable>
         </h:form>
    </f:view>
    </body>
    </html>My bean is that
    import java.io.Serializable;
    import java.util.List;
    import java.util.ArrayList;
    import javax.ejb.Local;
    import javax.ejb.Remote;
    import javax.ejb.Stateless;
    import javax.faces.context.FacesContext;
    import javax.faces.el.ValueBinding;
    import javax.persistence.EntityManager;
    import javax.persistence.PersistenceContext;
    import javax.persistence.Query;
    @Stateless (name="propiedadesLocal")
    public class PropiedadesBean implements LocalPropiedades, Serializable {
         @PersistenceContext (unitName="test")
         private EntityManager em;
         public List <Propiedad> getAllProperties() {
              ArrayList<Propiedad> propiedades = new ArrayList<Propiedad>();
              ValueBinding beanValueBinding = facesContext.getApplication().createValueBinding("#{propiedadesBean.allProperties}");*/
              Query q = em.createQuery("From propiedades");
              for (Object o: q.getResultList()) {
                   propiedades.add((Propiedad) o);
              return propiedades; 
    }this statement doesn't work
    Query q = em.createQuery("From propiedades");
    When I put a checkpoint. I see the em variable is null.
    Here I've got only a function returns a ArrayList. This class implements the business logic.
    My another class implements the pesistence is that.
    package org.jboss.jose.db;
    import javax.persistence.*;
    import java.util.*;
    import java.io.Serializable;
    import javax.persistence.*;
    import javax.persistence.Id;
    @Entity
    @Table(name="propiedades")
    public class Propiedad implements Serializable{
         private int referencia;
         private double precio1;
         private String referenciaCliente;
         private int nHabitaciones;
         private int cuartosDeBa�o;
         private Empleado empleado;
         //static final long serialVersionUID = 1L;;
         public Propiedad(){};
         public int getCuartosDeBa�o() {
              return cuartosDeBa�o;
         public void setCuartosDeBa�o(int cuartosDeBa�o) {
              this.cuartosDeBa�o = cuartosDeBa�o;
         public int getNHabitaciones() {
              return nHabitaciones;
         public void setNHabitaciones(int habitaciones) {
              nHabitaciones = habitaciones;
         public double getPrecio1() {
              return precio1;
         public void setPrecio1(double precio1) {
              this.precio1 = precio1;
         @Id //(generate = GeneratorType.AUTO)
         @GeneratedValue
         @Column (name = "Referencia")     
         public int getReferencia() {
              return referencia;
         public void setReferencia(int referencia) {
              this.referencia = referencia;
         public String getReferenciaCliente() {
              return referenciaCliente;
         public void setReferenciaCliente(String referenciaCliente) {
              this.referenciaCliente = referenciaCliente;
         //@JoinColumn (name = "idEmpleado")
         @ManyToOne
         public Empleado getEmpleado() {
              return empleado;
         public void setEmpleado(Empleado empleado) {
              this.empleado = empleado;
    The servlet that works
    package org.jboss.jose.web;
    import javax.servlet.http.HttpServlet;
    import java.io.IOException;
    import java.io.PrintWriter;
    import javax.naming.Context;
    import javax.naming.InitialContext;
    import javax.naming.NamingException;
    import javax.servlet.ServletException;
    import javax.servlet.http.HttpServlet;
    import javax.servlet.http.HttpServletRequest;
    import javax.servlet.http.HttpServletResponse;
    //import java.io.IOException;
    import org.jboss.jose.db.*;
    //import org.jboss.ejb.PropiedadesBean;
    public class PropiedadServlet extends HttpServlet {
         private LocalPropiedades propiedadesBean;
         private EmpleadosBean empleadosBean;
         protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {          
              this.mostrarPropiedades(req, resp);
         public void init() throws ServletException {
              try {
                   Context context = new InitialContext();
                   this.propiedadesBean = (LocalPropiedades) context.lookup("inmovil/propiedadesLocal/local");
                   this.propiedadesBean.addEmpleadoPropiedad("jose",1,"1",1000.00,"1000",1,1);          
              } catch (NamingException e) {
                   // TODO Auto-generated catch block
                   System.out.println(e.getMessage());
    //               e.printStackTrace();
         private void mostrarPropiedades(HttpServletRequest req, HttpServletResponse resp) throws ServletException ,IOException {
              PrintWriter out = resp.getWriter();
              for (Propiedad prop: this.propiedadesBean.getAllProperties()) {
                   out.p                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            

    I think that I don't load. But I don't know where I write the below line.Than it's clear that you'll get a NullPointerException.
    But I don't know where I write the below line.
    Context context = new InitialContext();
    this.propiedadesBean = (LocalPropiedades)
    context.lookup("inmovil/propiedadesLocal/local");Whenever you need it. For example within an ActionHandler which loads the bean
    and makes a DTO Object (Bean used by the JSF Page) available for the JSF Page.
    But where you actually have to load the Bean depends on your design.
    andi

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