java8根据条件筛选list的集合

public class Student { 
    private String name;//姓名
    private Integer age;//年龄
    private int sex;//性别
    private String professional;//专业 
    public String getName() {
        return name;
    }
    public void setName(String name) {
        this.name = name;
    }
    public Integer getAge() {
        return age;
    }
    public void setAge(Integer age) {
        this.age = age;
    }
    public int getSex() {
        return sex;
    }
    public void setSex(int sex) {
        this.sex = sex;
    }
    public String getProfessional() {
        return professional;
    }
    public void setProfessional(String professional) {
        this.professional = professional;
    }
    public Student(String name, Integer age, int sex, String professional) {
        super();
        this.name = name;
        this.age = age;
        this.sex = sex;
        this.professional = professional;
    }

import java.util.ArrayList;
import java.util.List;
import java.util.stream.Collectors; 
public class StreamTest { 

    public static void main(String[] args) {
        List<Student> allList = new ArrayList<Student>(); 
        Student st1 = new Student("小王",26,1,"计算机");
        allList.add(st1);
        Student st2 = new Student("小张",21,1,"电气");
        allList.add(st2);
        Student st3 = new Student("小红",22,1,"人文");
        allList.add(st3);
        Student st4 = new Student("小李",23,1,"计算机");
        allList.add(st4);
 
        System.out.println("**************************目的：只取专业为计算机行业的集合*************************");
//        allList = allList.stream().filter(Student -> Student.getProfessional().equals("计算机")).collect(Collectors.toList());
//        allList.forEach(Student -> {
//            System.out.println(Student.getName());
//        });
        System.out.println("**************************目的：取专业为计算机和人文专业的集合*************************");
        List<String> str=new ArrayList<>();
        str.add("计算机");
        str.add("人文");
        allList = allList.stream().filter(Student -> str.contains(Student.getProfessional())).collect(Collectors.toList());
        allList.forEach(Student -> {
            System.out.println(Student.getName());
        }); 
    }

public static <T> List<T> containsByField(List<T> list ,String field,Object value,Class<T> clazz){
        List<T> res = new ArrayList<>();
        try {
	// 通过反射获取对应的属性
            Field dbField = clazz.getDeclaredField(field);
	// 设置属性为可访问
            dbField.setAccessible(true);
            for (T t : list) {
	// 遍历list,获取到对应属性的值
                Object o = dbField.get(t);
                if(value.equals(o)){
		// 如值和预期想等的话,则加入到返回值中
                    res.add(t);
                }
            }
        } catch (NoSuchFieldException e) {
	// 如果不存在这个字段,则直接返回空
            return res;
        } catch (IllegalAccessException e) {
            e.printStackTrace();
        }
        return res;
    }

List<TestModel> c = containsByField(list, "name", "demo", TestModel.class);