Java 判斷對象的一個屬性是否存在該對象的List中

import java.util.List;


public class JudgeList {
    class Person{
        private  int id;
        private    int age;
        private  String name;

        public int getId() {
            return id;
        }

        public void setId(int id) {
            this.id = id;
        }

        public int getAge() {
            return age;
        }

        public void setAge(int age) {
            this.age = age;
        }

        public String getName() {
            return name;
        }

        public void setName(String name) {
            this.name = name;
        }
    }
    public boolean judgeExit(Person person, List<Person> personList){
        if(personList.stream().filter(w->w.getAge()==person.getAge()).findAny().isPresent()){
            return true;
        }else{
            return false;
        }
    }
}