personList = ListUtil.toList( new Person("jack", 15000), new Person("tom", 13500), new Person("peter", 18600) ); int totalSalary = 0; for (int i = 0; i < personList.size(); i++) { Person p = (Person)personList.get(i); totalSalary += p.getSalary(); } ctx.setData("salary", totalSalary); return null; } } ]]> THEN(s1);