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How to cast an entity to a list using facade method


How do I read / convert an InputStream into a String in Java?Why don't Java's +=, -=, *=, /= compound assignment operators require casting?what this exception means in oracle jaxd-ws soap web serviceClassCastException when inputing value to listjava.lang.String cannot be cast to main.java.example.PersonI have been trying to run selenium basic test in itelliJ and I am getting the following errorNullpointerException Arquillian test Ask@ConfigurationProperties on inherited variableGSON: java.lang.ClassCastException: com.google.gson.internal.LinkedTreeMap cannot be cast to My Generic ClassException in Application start method java.lang.reflect.InvocationTargetException at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)






.everyoneloves__top-leaderboard:empty,.everyoneloves__mid-leaderboard:empty,.everyoneloves__bot-mid-leaderboard:empty margin-bottom:0;








0















I'm trying add and remove object from that list using the method "listarEntregaKitRegistro", but .xhtml that supose to show the list wont display anything in the screen.



Kit is an entity class from my database, kitFacade is method that allow you to get a list about some entity in this case kit, kitFacade is also generated by netbeans as a session bean from entity classes, actually kitFacade.findAll() is working well and retrieve all the elements from that list, but i need to get them with some exceptions.



public List<Kit> listarEntregaKitRegistro()
for (int i=0; i<=kitFacade.findAll().size(); i=i+1)
if (kit.getEstadoKit()=="Activo")
kitFacade.findAll().add(i, kit);

else
kitFacade.findAll().remove(i);


return kitFacade.findAll();



Exception thrown by glassfish server 4.1.1:



Caused by: java.lang.ClassCastException: com.entity.Kit cannot be cast to 
java.util.List
at com.controller.KitController.paraEntregar(KitController.java:26)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at javax.el.ELUtil.invokeMethod(ELUtil.java:332)









share|improve this question


























  • Plase edit your question to provide a minimal reproducible example. At least include the com.controller.KitController.paraEntregar() source code where you are doing a wrong cast.

    – Selaron
    Mar 28 at 7:02

















0















I'm trying add and remove object from that list using the method "listarEntregaKitRegistro", but .xhtml that supose to show the list wont display anything in the screen.



Kit is an entity class from my database, kitFacade is method that allow you to get a list about some entity in this case kit, kitFacade is also generated by netbeans as a session bean from entity classes, actually kitFacade.findAll() is working well and retrieve all the elements from that list, but i need to get them with some exceptions.



public List<Kit> listarEntregaKitRegistro()
for (int i=0; i<=kitFacade.findAll().size(); i=i+1)
if (kit.getEstadoKit()=="Activo")
kitFacade.findAll().add(i, kit);

else
kitFacade.findAll().remove(i);


return kitFacade.findAll();



Exception thrown by glassfish server 4.1.1:



Caused by: java.lang.ClassCastException: com.entity.Kit cannot be cast to 
java.util.List
at com.controller.KitController.paraEntregar(KitController.java:26)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at javax.el.ELUtil.invokeMethod(ELUtil.java:332)









share|improve this question


























  • Plase edit your question to provide a minimal reproducible example. At least include the com.controller.KitController.paraEntregar() source code where you are doing a wrong cast.

    – Selaron
    Mar 28 at 7:02













0












0








0








I'm trying add and remove object from that list using the method "listarEntregaKitRegistro", but .xhtml that supose to show the list wont display anything in the screen.



Kit is an entity class from my database, kitFacade is method that allow you to get a list about some entity in this case kit, kitFacade is also generated by netbeans as a session bean from entity classes, actually kitFacade.findAll() is working well and retrieve all the elements from that list, but i need to get them with some exceptions.



public List<Kit> listarEntregaKitRegistro()
for (int i=0; i<=kitFacade.findAll().size(); i=i+1)
if (kit.getEstadoKit()=="Activo")
kitFacade.findAll().add(i, kit);

else
kitFacade.findAll().remove(i);


return kitFacade.findAll();



Exception thrown by glassfish server 4.1.1:



Caused by: java.lang.ClassCastException: com.entity.Kit cannot be cast to 
java.util.List
at com.controller.KitController.paraEntregar(KitController.java:26)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at javax.el.ELUtil.invokeMethod(ELUtil.java:332)









share|improve this question
















I'm trying add and remove object from that list using the method "listarEntregaKitRegistro", but .xhtml that supose to show the list wont display anything in the screen.



Kit is an entity class from my database, kitFacade is method that allow you to get a list about some entity in this case kit, kitFacade is also generated by netbeans as a session bean from entity classes, actually kitFacade.findAll() is working well and retrieve all the elements from that list, but i need to get them with some exceptions.



public List<Kit> listarEntregaKitRegistro()
for (int i=0; i<=kitFacade.findAll().size(); i=i+1)
if (kit.getEstadoKit()=="Activo")
kitFacade.findAll().add(i, kit);

else
kitFacade.findAll().remove(i);


return kitFacade.findAll();



Exception thrown by glassfish server 4.1.1:



Caused by: java.lang.ClassCastException: com.entity.Kit cannot be cast to 
java.util.List
at com.controller.KitController.paraEntregar(KitController.java:26)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at javax.el.ELUtil.invokeMethod(ELUtil.java:332)






java persistence






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edited Mar 28 at 7:56









Kukeltje

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asked Mar 28 at 4:41









kimera kemiskkimera kemisk

14 bronze badges




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  • Plase edit your question to provide a minimal reproducible example. At least include the com.controller.KitController.paraEntregar() source code where you are doing a wrong cast.

    – Selaron
    Mar 28 at 7:02

















  • Plase edit your question to provide a minimal reproducible example. At least include the com.controller.KitController.paraEntregar() source code where you are doing a wrong cast.

    – Selaron
    Mar 28 at 7:02
















Plase edit your question to provide a minimal reproducible example. At least include the com.controller.KitController.paraEntregar() source code where you are doing a wrong cast.

– Selaron
Mar 28 at 7:02





Plase edit your question to provide a minimal reproducible example. At least include the com.controller.KitController.paraEntregar() source code where you are doing a wrong cast.

– Selaron
Mar 28 at 7:02












1 Answer
1






active

oldest

votes


















1
















I did't know where you are casting Kit to List. but you are doing wrong String comparison. May be in your some other function you are casting your object into list. Here is the code with some modification.



public List<Kit> listarEntregaKitRegistro()
List<Kit> list = kitFacade.findAll();
for (int i=0; i<=list.size(); i++)
if (kit.getEstadoKit().equals("Activo")) // compare String by Equals method
list.add(i, kit);
else
list.remove(i);


return list;






share|improve this answer


























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    I did't know where you are casting Kit to List. but you are doing wrong String comparison. May be in your some other function you are casting your object into list. Here is the code with some modification.



    public List<Kit> listarEntregaKitRegistro()
    List<Kit> list = kitFacade.findAll();
    for (int i=0; i<=list.size(); i++)
    if (kit.getEstadoKit().equals("Activo")) // compare String by Equals method
    list.add(i, kit);
    else
    list.remove(i);


    return list;






    share|improve this answer































      1
















      I did't know where you are casting Kit to List. but you are doing wrong String comparison. May be in your some other function you are casting your object into list. Here is the code with some modification.



      public List<Kit> listarEntregaKitRegistro()
      List<Kit> list = kitFacade.findAll();
      for (int i=0; i<=list.size(); i++)
      if (kit.getEstadoKit().equals("Activo")) // compare String by Equals method
      list.add(i, kit);
      else
      list.remove(i);


      return list;






      share|improve this answer





























        1














        1










        1









        I did't know where you are casting Kit to List. but you are doing wrong String comparison. May be in your some other function you are casting your object into list. Here is the code with some modification.



        public List<Kit> listarEntregaKitRegistro()
        List<Kit> list = kitFacade.findAll();
        for (int i=0; i<=list.size(); i++)
        if (kit.getEstadoKit().equals("Activo")) // compare String by Equals method
        list.add(i, kit);
        else
        list.remove(i);


        return list;






        share|improve this answer















        I did't know where you are casting Kit to List. but you are doing wrong String comparison. May be in your some other function you are casting your object into list. Here is the code with some modification.



        public List<Kit> listarEntregaKitRegistro()
        List<Kit> list = kitFacade.findAll();
        for (int i=0; i<=list.size(); i++)
        if (kit.getEstadoKit().equals("Activo")) // compare String by Equals method
        list.add(i, kit);
        else
        list.remove(i);


        return list;







        share|improve this answer














        share|improve this answer



        share|improve this answer








        edited Mar 28 at 5:37

























        answered Mar 28 at 5:01









        Khalid ShahKhalid Shah

        2,6553 gold badges10 silver badges32 bronze badges




        2,6553 gold badges10 silver badges32 bronze badges





















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