обобщение

for (int i = List.size()-1; i>=0;i--){
            System.out.println(List.get(i));
        }
        ////////////////////
        System.out.print("Enter position: ");
        int c = in.nextInt();
        List.add(c,str5);
        ////////////////////
        List.addFirst(str1);
        List.addLast(str2);
        /////////////////
        String[] ListArray =  List.toArray(new String[4]);
        for (String i:
             ListArray) {
            System.out.println(i);
        }
        //////////////////
        Animal s1 = new Animal("Kaika","Alabai",12);
        Animal s2 = new Animal("Mushtar","Ovcharka",5);
        Animal s3 = new Animal("Rust","hotdog",7);
        Animal s4 = new Animal("Jakk","Labrador",6);

        LinkedList<Animal> Dogs = new LinkedList<Animal>();
        Dogs.add(s1);
        Dogs.add(s2);
        Dogs.add(s3);
        Dogs.add(s4);
        Deque<Animal> deque = new ArrayDeque<Animal>(Dogs);
        deque.addFirst(s1);
        deque.addLast(s4);
        deque.peekFirst();
        deque.peekLast();
        deque.push(s2);
        deque.removeFirst();
        int v = 0;
        while(deque.peek()!=null){
            deque.pollFirst().display();
        }

public static void main(String[] ags) {
    Person man1 = new Person("man1",34,30000);
    Person man2 = new Person("man2",32,40000);
    Person man3 = new Person("man3",33,50000);
    LinkedList<Person> list1 = new LinkedList<Person>();
    list1.add(man1);
    list1.add(man2);
    list1.add(man3);
    ArrayDeque<Person> list2 = new ArrayDeque<Person>(list1);

    for (int i = 0; i <list1.size();i++){
        list1.get(i).display();}
        for (Person a:
             list2) {
            a.display();
        }

        list2.getFirst();
        list2.getLast();
        list2.pollLast();
        list2.pollFirst();
        list2.pop();
        list2.removeFirstOccurrence(man2);
        list2.removeLastOccurrence(man1);


        int AvgSal = 0;
        int AvgAge = 0;


        for (Person a:
                list2) {
            AvgAge += a.getAge();
            AvgSal += a.getSalary();
        }
        System.out.println("Sum of Age: " + AvgAge);
        System.out.println("Sum of Salary: " + AvgSal);
        System.out.println("Avg of Age: " + AvgSal/ list2.size());
        System.out.println("Avg of Salary: " + AvgSal/ list2.size());

    }