less bb, look code

    private static void streamMax() {
        Student zs = new Student();
        zs.setName("张三(11)");
        zs.setAge(28);

        Student zsf = new Student();
        zsf.setName("张三丰(66)");
        zsf.setAge(68);

        Student zuj = new Student();
        zuj.setName("张无忌(98");
        zuj.setAge(38);

        List<Student> list = Arrays.asList(zs, zsf, zuj);

        // 取名字最大编号
        Optional<Student> studentOptional = list.stream().filter(userFilter -> {
            String name = userFilter.getName();
            return name.contains("(") && name.contains(")");
        }).max(Comparator.comparing(student -> {
            String name = student.getName();
            String strNum = name.substring(name.indexOf("(") + 1, name.indexOf(")"));
            return Integer.parseInt(strNum);
        }));

        studentOptional.ifPresent(student -> {
            System.out.println(student.getName());
        });

        // 取年龄最大
        Optional<Student> ageMax = list.stream().max(Comparator.comparing(Student::getAge));
        ageMax.ifPresent(student -> {
            System.out.println(student.getAge());
        });
        
    }