Not able to make my class managed bean

Question

I have a userManagement.xhtml file name as UserManagement in my portlet and I have included 3 more xhtml files in different panels

my userManagement.xhtmlpage is basically like this

<h:form>
    <p:panel rendered="#{userManagement.condition}">
         <ui:include src="userTable.xhtml"/>
    </p:panel>
    <p:panel rendered="#{userManagement.condition}"/>
         <ui:include src="userDetails.xhtml"/>
    </p:panel>
    <p:panel rendered="#{userManagement.condition}"/>
         <ui:include src="userActivity.xhtml"/>
    </p:panel>
</h:form>

Based on rendering condition I use to show one of the 3 xhtml file(panel) to user.

For managing these I have 1 managed bean name as UserManagement.java. There are 3 more files for other 3 xhtml file.

I tried to make UserTable.java, UserDetails.java and userActivity.java but I am getting

com.example.useroperations.UserTable cannot be cast to javax.faces.component.UIComponent

Right now I am using this as a normal java class by creating object and using it in UserManagement.java. But I would like to make it managed bean.

My Java code is like this UserManagement.java

@ManagedBean
@ViewScoped
class UsermanageMent{
private UserTable userTable;

public void showUserTable(){
     this.userTable = new UserTable("some param");
     ...
     ...
}

public void setUserTable(UserTable userTable){
   this.userTable = userTable
}

public getUserTable(){
   return this.userTable();
}

}

UserTable.java

@ManagedBean
@ViewScoped
public UserTable{
   ......
   ......

   public UserTable(String param){
        ......
        this.retrieveListOfUser(param);

   }
   public void retrieveListOfUser(String param){
       ......
       ......
       SomeOtherClass obj = new SomeOtherClass();
       obj.retrieve();    // This is for DB call
   }
}

Answer 1

Cause of this problem is my datatable binding #{userTable} and my managed bean UserTable which will be same #{userTable}.

Due to this I was getting

com.example.useroperations.UserTable cannot be cast to javax.faces.component.UIComponent

I just changed my dataTable binding as #{userDataTable}. And after that it worked. :)