jsf - java.lang.TypeNotPresentException: Type bookingSessionBean.Plot not present -

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i want show list of plot database. have created plot.java in package bookingsessionbean , viewplot.java in package viewbean, doesn't work.

index.xhtml code:

<h:body>     <h1><h:outputtext value="selected plot" /></h1>     <h:form>         <f:view>             <h:datatable value="#{viewplot.plots}" var="item">                 <h:column>                     <h:outputtext value="#{item.plotno}" />                 </h:column>             </h:datatable>         </f:view>     </h:form> </h:body>

viewplot.java code

@managedbean @named(value = "viewplot") @sessionscoped public class viewplot implements serializable {     @persistencecontext(unitname = "2day4upu")     private entitymanager em;      public viewplot() {     }      public list<plot> getplots()     {         return em.createnamedquery("plot.findall").getresultlist();      }

}

plot.java code

@entity @table(name = "plot") @xmlrootelement @namedqueries({     @namedquery(name = "plot.findall", query = "select p plot p"),     @namedquery(name = "plot.findbyplotno", query = "select p plot p p.plotno = :plotno"),     @namedquery(name = "plot.findbystartdate", query = "select p plot p p.startdate = :startdate"),     @namedquery(name = "plot.findbyenddate", query = "select p plot p p.enddate = :enddate"),     @namedquery(name = "plot.findbyavailableplot", query = "select p plot p p.availableplot = :availableplot")}) public class plot implements serializable {     private static final long serialversionuid = 1l;     @id     @basic(optional = false)     @notnull     @column(name = "plotno")     private integer plotno;     @basic(optional = false)     @notnull     @column(name = "startdate")     @temporal(temporaltype.date)     private date startdate;     @basic(optional = false)     @notnull     @column(name = "enddate")     @temporal(temporaltype.date)     private date enddate;     @column(name = "availableplot")     private integer availableplot;     @joincolumn(name = "accomno", referencedcolumnname = "accomno")     @manytoone(optional = false)     private accomodation accomno;     @joincolumn(name = "siteno", referencedcolumnname = "siteno")     @manytoone(optional = false)     private site siteno;     @onetomany(cascade = cascadetype.all, mappedby = "plotno")     private collection<booking> bookingcollection;      public plot() {     }      public plot(integer plotno) {         this.plotno = plotno;     }  public plot(integer plotno, date startdate, date enddate) {     this.plotno = plotno;     this.startdate = startdate;     this.enddate = enddate; }  public integer getplotno() {     return plotno; }  public void setplotno(integer plotno) {     this.plotno = plotno; }  public date getstartdate() {     return startdate; }  public void setstartdate(date startdate) {     this.startdate = startdate; }  public date getenddate() {     return enddate; }  public void setenddate(date enddate) {     this.enddate = enddate; }  public integer getavailableplot() {     return availableplot; }  public void setavailableplot(integer availableplot) {     this.availableplot = availableplot; }  public accomodation getaccomno() {     return accomno; }  public void setaccomno(accomodation accomno) {     this.accomno = accomno; }  public site getsiteno() {     return siteno; }  public void setsiteno(site siteno) {     this.siteno = siteno; }  @xmltransient public collection<booking> getbookingcollection() {     return bookingcollection; }  public void setbookingcollection(collection<booking> bookingcollection) {     this.bookingcollection = bookingcollection; }  @override public int hashcode() {     int hash = 0;     hash += (plotno != null ? plotno.hashcode() : 0);     return hash; }  @override public boolean equals(object object) {     // todo: warning - method won't work in case id fields not set     if (!(object instanceof plot)) {         return false;     }     plot other = (plot) object;     if ((this.plotno == null && other.plotno != null) || (this.plotno != null && !this.plotno.equals(other.plotno))) {         return false;     }     return true; }  @override public string tostring() {     return "bookingsessionbean.plot[ plotno=" + plotno + " ]"; }

}

[ how can solve error? ]


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