list遍历添加条件同时修改元素

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());
        }