Remove duplicate from List java8

user_4613578 0
Viewed 57746

I have a class below, and wanted to remove duplicate person which contain same name, how to do by using Java8 Lambda, expected List contains p1, p3 from the below.

Person:

public class Person {

public int id;
public String name;
public String city;

public int getId() {
    return id;
}

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

public String getName() {
    return name;
}

public void setName(String name) {
    this.name = name;
}

public String getCity() {
    return city;
}

public void setCity(String city) {
    this.city = city;
}

}

Testing:

import java.util.ArrayList;
import java.util.List;

public class Testing {

public static void main(String[] args) {

    List<Person> persons = new ArrayList<>();

    Person p1 = new Person();
    p1.setId(1);
    p1.setName("Venkat");
    p1.setCity("Bangalore");
    Person p2 = new Person();

    p2.setId(2);
    p2.setName("Venkat");
    p2.setCity("Bangalore");

    Person p3 = new Person();
    p3.setId(3);
    p3.setName("Kumar");
    p3.setCity("Chennai");

    persons.add(p1);
    persons.add(p2);
    persons.add(p3);

}
}
java-8
4 Answers
List<Person> personsWithoutDuplicates = persons.stream()
 .distinct()
 .collect(Collectors.toList());
user_48137770 
public static void main(String[] args) {

    List<Integer> arrList = Arrays.asList(10, 20, 10, 30, 20, 40, 50, 40);

    arrList.stream().distinct().collect(Collectors.toList()).forEach(System.out::println);

}
user_48796510
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