Map paramMap = new LinkedHashMap();
Map sessionMap = new LinkedHashMap();
ActionSupport action = new ActionSupport();
action.addActionError("some action error 1");
action.addActionError("some action error 2");
action.addActionMessage("some action message 1");
action.addActionMessage("some action message 2");
action.addFieldError("field1", "some field error 1");
action.addFieldError("field2", "some field error 2");