Liferay UI error message usage

<p>only key - nothing prints</p>
<liferay-ui:error key="delete-account.action.managment.error1" />


if key and message given (    SessionErrors.add(actionRequest, "delete-account.action.managment.error2" ,"error2message" );
)
  load message from language.properties and display it. if no message found then display what ever given in message attribute

<liferay-ui:error key="delete-account.action.managment.error2" message="delete-account.action.managment.error2"/>

display formatted message with arguments

    SessionErrors.add(actionRequest, "delete-account.action.managment.error3" ,ame.getMessage());

<liferay-ui:error key='delete-account.action.managment.error3' message='<%= LanguageUtil.format(pageContext, "delete-account.action.managment.error3", SessionErrors.get(renderRequest,"delete-account.action.managment.error3")) %>'/>