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Serializable Exception in Java

When  you use Wicket as webfrontend framework to build your application, sooner or later you’ll encounter the NotSerializableException. This is because Wicket will want to serialize any state you have into a HTTPSession. In Wicket, the first three pages are

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Wicket Exception when using wrong order in addComponent

Today I working on a application that uses the Wicket framework. I was plagued with the following Exception: WicketMessage: org.apache.wicket.WicketRuntimeException: component myForm:myTable:editor not found on page nl.gerbrand-ict.gui.HomePage[id = 4], listener interface = [RequestListenerInterface name=IActivePageBehaviorListener, method=public abstract void org.apache.wicket.behavior.IBehaviorListener.onRequest()] Root cause:

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Enabling accesskeys for javascript events

Using the accesskey attribute, you can enable hotkeys for various html input elements. This allows one to get the focus to an input element by using the ALT-key + <CHARACTER> (on Windows) or CTRL-key + <CHARACTER> (on Mac). This way,

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