Using FacesMessage to Create a Message (javaee7)

 FacesMessage msg=new FacesMessage("This is an inline FacesMessage");
 msg.setSeverity(FacesMessage.SEVERITY_FATAL);
 FacesContext fctx=FacesContext.getCurrentInstance();
 fctx.addMessage(null, msg);

http://adfgouravtkiet.blogspot.in/2012/07/how-to-use-facesmessage-component-in-adf.html

http://oracleadf-java.blogspot.in/2012/10/show-inline-message-in-oracle-adf.html

http://mjabr.wordpress.com/2011/07/29/how-to-show-afmessage-programatically/