Main.java Source code

Introduction

Here is the source code for Main.java

Source

import java.util.ArrayList;
import java.util.List;
import java.util.stream.Collectors;

public class Main {
    public static void main(String[] argv) {
        List<Person> persons = new ArrayList<>();
        persons.add(new Person("Joe", 12));
        persons.add(new Person("Jim", 34));
        persons.add(new Person("John", 23));

        List<Person> list = persons.stream().filter(p -> p.getAge() > 18).collect(Collectors.toList());
        list.forEach(p -> System.out.println(p.getFirstName()));

    }
}

class MyWrapper {
    private Person person;

    public MyWrapper(Person person) {
        this.person = person;
    }

    public Person getPerson() {
        return person;
    }

    public void setPerson(Person person) {
        this.person = person;
    }
}

class Person {
    private String firstName;
    private String lastName;
    private int age;

    public Person(String firstName) {
        this.firstName = firstName;
    }

    public Person(String firstName, int age) {
        this.firstName = firstName;
        this.age = age;
    }

    public String getFirstName() {
        return firstName;
    }

    public void setFirstName(String firstName) {
        this.firstName = firstName;
    }

    public String getLastName() {
        return lastName;
    }

    public void setLastName(String lastName) {
        this.lastName = lastName;
    }

    public int getAge() {
        return age;
    }

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

    @Override
    public String toString() {
        return "Person [firstName=" + firstName + ", lastName=" + lastName + ", age=" + age + "]";
    }

}