java8根据list对象中的属性过滤筛选

代码演示：根据性别筛选出所有的女同学

@Data
        class Student{
            public Integer age;
            public String name;
            public String sex;
        }
        List<Student> students = new ArrayList<>();
        Student student1 = new Student();
        student1.setAge(18);
        student1.setName("赵");
        student1.setSex("男");
        Student student2 = new Student();
        student2.setAge(19);
        student2.setName("钱");
        student2.setSex("女");
        Student student3 = new Student();
        student3.setAge(20);
        student3.setName("孙");
        student3.setSex("女");
        Collections.addAll(students,student1,student2,student3);
        //根据条件过滤 出所有的女同学
        List<Student> result = students.stream().filter(student -> student.getSex().equals("女")).collect(Collectors.toList());
        System.out.println(result);

执行结果：

filter方法：

对流的过滤,将一个流转换成另一个子集流