ArrayList Initialization

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

class Main {
    class Person {
        private String name;
        private int age;
        public void setName(String name) {
            this.name = name;
        }
        public String getName() {
            return name;
        }
        public void setAge(int age) {
            this.age = age;
        }
        public int getAge() {
            return age;
        }
    }
    public static void main(String[] args) {
        //Pre Java 7: List<Person> people = new ArrayList<Person>();
        List<Person> people = new ArrayList<>();
        // Guava: List<Person> people = Lists.newArrayList();
    }
}