title: JAVA hibernate/webservice - Problem with Timestamp
body: <p>In one of my hibernate classes I've a Timestamp variable. Now everything was alright when I used only the hibernate stuff on the server. But now I'm implementing webservice with wsgen.</p>
  
  <p>I get an error because Timestamp doesn't got an no-args default constructor.</p>
  
  <p>Message;</p>
  
  <pre><code>Caused by: java.security.PrivilegedActionException: com.sun.xml.internal.bind.v2.runtime.IllegalAnnotationsException: 1 counts of IllegalAnnotationExceptions
  java.sql.Timestamp does not have a no-arg default constructor.
  </code></pre>
  
  <p>The Class:</p>
  
  <pre><code>package com.PTS42.planner;
  
  import java.io.Serializable;
  import java.sql.Timestamp;
  import javax.jws.WebParam;
  import javax.jws.WebService;
  import javax.persistence.*;
  import org.hibernate.annotations.GenericGenerator;
  
  @WebService
  @Entity @Table(name="Reserveringen")
  public class Reservering implements Serializable {
  
      @Id @GenericGenerator(name = "generator", strategy = "increment")
      @GeneratedValue(generator = "generator")
      private int id;
  
      private Timestamp vanaf;
  
      private Timestamp tot;
  
      @ManyToOne
      @Embedded
      private Klant klant;
  
      @ManyToOne
      @Embedded
      private Machine machine;
  
      public int getId() {
          return id;
      }
  
      public void setId(@WebParam(name="reservering_id")int id) {
          this.id = id;
      }
  
      public Klant getKlant() {
          return klant;
      }
  
      public void setKlant(@WebParam(name="reservering_klant")Klant klant) {
          this.klant = klant;
      }
  
      public Timestamp getTot() {
          return tot;
      }
  
      public void setTot(@WebParam(name="reservering_tot")Timestamp tot) {
          int tempint = tot.getMonth();
          tot.setMonth(tempint-1);
          this.tot = tot;
      }
  
      public Timestamp getVanaf() {
          return vanaf;
      }
  
      public void setVanaf(@WebParam(name="reservering_vanaf")Timestamp vanaf) {
          int tempint = vanaf.getMonth();
          vanaf.setMonth(tempint-1);
          this.vanaf = vanaf;
      }
  
      public Machine getMachine() {
          return machine;
      }
  
      public void setMachine(@WebParam(name="reservering_machine")Machine machine) {
          this.machine = machine;
      }
  
  
  
  
      public Reservering() {
      }
  
      public Reservering(@WebParam(name="reservering_constructor_vanaf") Timestamp vanaf, @WebParam(name="reservering_constructor_tot")Timestamp tot, @WebParam(name="reservering_constructor_klant")Klant klant, @WebParam(name="reservering_constructor_machine")Machine machine)
      {
  
          this.vanaf = vanaf;
          this.tot = tot;
          this.klant = klant;
          this.machine = machine;
      }
  
  
  
  }
  </code></pre>
  
  <p>Anyone know how to solve this, without using an other kind of variable then Timestamp.</p>