public class Main {

public static void main(String[] args) {

List<Person> list = Arrays.asList(new Person("Xiao", "Ming", 18), new Person("Xiao", "Hong", 25),

new Person("Bob", "Smith", 20));

boolean exist = list.contains(new Person("Bob", "Smith", 20));

System.out.println(exist ? "测试成功!" : "测试失败!");

}

}

class Person {

String firstName;

String lastName;

int age;

public Person(String firstName, String lastName, int age) {

this.firstName = firstName;

this.lastName = lastName;

this.age = age;

}

/**

* TODO: 覆写equals方法

*/

@Override

public boolean equals(Object o) {

if (o!= null && o instanceof Person) {

Person p = (Person) o;

return Objects.equals(this.firstName, p.firstName) &&

Objects.equals(this.lastName, p.lastName)  &&

this.age == p.age;

}

return false;

}

}