[Wicket-user] DatePicker Errors

[Ayodeji Aladejebi]

I am using Wicket Version 1.1.1 and also Wicket extension version 1.1.1...i was doing this in my code

 

WebMarkupContainer dateLabel = new WebMarkupContainer("dateLabel");
            add(dateLabel);
            add(dateOfBirth = new RequiredTextField("dateOfBirth", Date.class));
            dobPicker = new DatePicker("dobPicker",dateOfBirth,dateLabel);
            add(dobPicker);

I am developing with Netbeans 5.0 and when i launch application contaiing the form i get:

 

java.lang.NoSuchMethodError: wicket.extensions.markup.html.datepicker.DatePicker.addToHeader(Lwicket/Component;)V
wicket.extensions.markup.html.datepicker.DatePicker.<init>(DatePicker.java:228)
wicket.extensions.markup.html.datepicker.DatePicker .<init>(DatePicker.java:179)
net.community.health.pages.RecordInputPage$InputForm.<init>(RecordInputPage.java:85)
net.community.health.pages.RecordInputPage.<init>(RecordInputPage.java:38)
net.community.health.pages.StartPage .<init>(StartPage.java:35)