Java/GWT/DisclosurePanel

Use DisclosurePanel

   <source lang="java">

package com.jexp.gwt.client; import com.google.gwt.core.client.EntryPoint; import com.google.gwt.user.client.Window; import com.google.gwt.user.client.ui.Button; import com.google.gwt.user.client.ui.ClickListener; import com.google.gwt.user.client.ui.RootPanel; import com.google.gwt.user.client.ui.Widget; import com.google.gwt.user.client.ui.HTML; import com.google.gwt.user.client.ui.DisclosurePanel; public class GWTClient implements EntryPoint{

 public void onModuleLoad() {
   DisclosurePanel disc = new DisclosurePanel("Click to disclose something:");
   disc.setContent(new HTML("This widget is is shown and hidden
by the "
       + "disclosure panel that wraps it."));

   RootPanel.get().add(disc);
 }

}

      </source>