Java stream流 修改List＜String＞ 和 List＜对象＞

                
                List list = Arrays.asList("1" , "1" ,"1" ,"1" ,"1" ,"1");

                // 给 list 元素都添加 2 标识
                System.out.println(list.stream().map(x -> x + 2).collect(Collectors.toList()));

输出：[12, 12, 12, 12, 12, 12]

修改对象：

List dataXES = JSON.parseArray(payload, DataX.class);
            dataXES = dataXES.stream().peek(x -> x.setTss("11111"))).collect(Collectors.toList());
            System.out.println(dataXES);