list遍历添加条件同时修改元素

方式一

 // 遍历list同时修改元素List<Person> list = new ArrayList(16);list.add(new Person("小王", 18));list.add(new Person("小三", 17));list.stream().filter(item -> item.getAge() > 17).forEach(item -> {item.setUserName(item.getUserName() + "i");});for (Person person : list) {log.info("person:[{}]",person.toString());}

23:47:02.933 [main] INFO com.geekmice.sbeasypoi.service.impl.ds - person:[ds.Person(userName=小王i, age=18)]
23:47:02.942 [main] INFO com.geekmice.sbeasypoi.service.impl.ds - person:[ds.Person(userName=小三, age=17)]

方式二

    for (Person person : list) {if (person.getAge() > 17) {person.setUserName(person.getUserName() + "i");}}for (Person person : list) {log.info("person:[{}]", person.toString());}