https://answers.axonivy.com/questions/1350/exception-when-using-ch-ivyteam-ivy-scripting-objects-list-on-primefaces<p>Hi all</p> <p>I'm using primefaces 5 with HtmlUserDialog, in my page i'm using &lt;p:selectmanycheckbox&gt; that binding with a instance of ch.ivyteam.ivy.scripting.objects.List, for example:</p> <pre><code>p:selectManyCheckbox value="#{data.selectedWeeklyDayList}" layout="pageDirection"&gt; f:selectItems value="#{data.listWeekDay}" var="weekDay" itemValue="#{weekDay}" itemLabel="#{weekDay.value}"/&gt; /p:selectManyCheckbox&gt; </code></pre> <p>And <code>selectedWeeklyDayList</code> and <code>listWeekDay</code> are instances of <code>ch.ivyteam.ivy.scripting.objects.List</code>. When i submit this page, after several times, i got this exception:</p> <pre><code>IllegalAccessException: Class javax.faces.component.UIComponentBase can not access a member of class ch.ivyteam.ivy.scripting.objects.List with modifiers "private" RuntimeException: java.lang.IllegalAccessException: Class javax.faces.component.UIComponentBase can not access a member of class ch.ivyteam.ivy.scripting.objects.List with modifiers "private" IllegalStateException: Error restoring component: addNewEditForm_5649:selectedWeeklyDayList </code></pre> <p>Now i just have temporary solution to avoid this exception is i change from <code>ch.ivyteam.ivy.scripting.objects.List</code> to <code>java.util.List</code></p> <p>Why do i face this issue? and is there any solutions to avoid it but i still can use <code>ch.ivyteam.ivy.scripting.objects.List</code>? because i need to use some features of this class (for ex: clone() method)</p> <p>Thanks all.</p>enWed, 03 Feb 2016 02:21:52 -0500https://answers.axonivy.com/questions/1350/exception-when-using-ch-ivyteam-ivy-scripting-objects-list-on-primefaces/1648<p>Thanks for your support it's problem because ivy list make it's constructor to be private then other caller can not create new instance. It's also a issue in JIRA of IvyTeam (<a href="https://jira.axonivy.com/jira/browse/XIVY-427)">https://jira.axonivy.com/jira/browse/XIVY-427)</a> And it has been fixed in version 6.0.2 revision 50953</p>trungdvWed, 03 Feb 2016 02:21:52 -0500https://answers.axonivy.com/questions/1350/exception-when-using-ch-ivyteam-ivy-scripting-objects-list-on-primefaces/1648https://answers.axonivy.com/questions/1350/exception-when-using-ch-ivyteam-ivy-scripting-objects-list-on-primefaces/1351<p>Seems your getter and setter of data.selectedWeeklyDayList is private.</p> <p>To your clone() problem. The interface List does not implement Cloneable. You have to use the actual Object. For example ArrayList.</p> <pre><code>List&lt;Object&gt; list = new ArrayList&lt;Object&gt;(); list.clone(); &lt;-- doesn't exist ((ArrayList) list).clone(); &lt;-- unchecked cast to ArrayList. ArrayList implements Cloneable. </code></pre> <p>or you use ArrayList itself.</p> <pre><code>ArrayList&lt;Object&gt; list = new ArrayList&lt;Object&gt;(); </code></pre>HaraldWeberFri, 05 Jun 2015 12:42:07 -0400https://answers.axonivy.com/questions/1350/exception-when-using-ch-ivyteam-ivy-scripting-objects-list-on-primefaces/1351