jsf 2 - Print data from dynamic table in JSF -


i have screen dynamic table contains inputtext feild , selectnemenu beside there's (+) button, when user should press button form should add row below ,i want print on console(eclipse) data user enter , want add validation (+) button user cant add new row until user enter data in cells in previous row
iam newbie jsf programming.can tell me basic example.

you may use f:setpropertyactionlistener h:commandbutton values of current row in backing bean. , in backing bean may apply validation check values of inputtext , selectonemenu. if values non empty can add new object (row) list below :

jsf code:

<h:datatable id="dt" var="element" value="#{bean.list}"> <h:column> <h:inputtext value="#{element.inputval}" > </h:inputtext> </h:column> <h:column> <h:selectonemenu value="" > </h:selectonemenu> </h:column> <h:column>      <h:commandbutton value="plus button" action="#{bean.addrow}">                     <f:setpropertyactionlistener value="#{element}" target="#{bean.selectedrow}" />     </h:commandbutton>  </h:column> </h:datatable>

bean code :

   public void addrow()         {            if(validateemptyrow(selectedrow)            {             a = new a();             list.add(a);            }           else           {            //print validation message           }         }      public boolean validateemptyrow(a selectedrow){          boolean flag = true;         if(null == selectrow.getinputval()){           flag = false;         }         //similary validate null value selectonemenu , return boolean value false if of 2 having null or empty value         return flag;      }  //define getter setter selectedrow, list etc

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