Hi,

I am having trouble with HtmlSelectManyCheckbox. I need to create dynamic multiple selct checkboxex on a button click.
But I cannt figure it our how it works. Please anybody help me.

Here is my code :

bean :

			

			

			public String addMatCodes() {
			

			

			HtmlSelectManyCheckbox checkbox = new HtmlSelectManyCheckbox();
			

			

			checkbox.setValue(new SelectItem("chk1"));
			

			

			group.getChildren().add(checkbox);
			

			Logger.getLog().debug("adding ....");        return "addMat";
			

			}
			

		

jsp :

When I press the command button second time it gives an error as follows :

org.apache.jasper.JasperException: Duplicate component ID 'createNewForm:_id4' found in view.
at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:254)
at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:295)
at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:241)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
at org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:684)
at org.apache.catalina.core.ApplicationDispatcher.doForward(ApplicationDispatcher.java:432)
at org.apache.catalina.core.ApplicationDispatcher.forward(ApplicationDispatcher.java:356)
at com.sun.faces.context.ExternalContextImpl.dispatch(ExternalContextImpl.java:322)
at com.sun.faces.application.ViewHandlerImpl.renderView(ViewHandlerImpl.java:147)
at com.sun.faces.lifecycle.RenderResponsePhase.execute(RenderResponsePhase.java:87)
at com.sun.faces.lifecycle.LifecycleImpl.phase(LifecycleImpl.java:200)
at com.sun.faces.lifecycle.LifecycleImpl.render(LifecycleImpl.java:117)
at javax.faces.webapp.FacesServlet.service(FacesServlet.java:198)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain
...........................

Please can someone help me.

Thanks,
~JS    <<Less