arraylist add 28int index 2c e element 29 method in java

1import java.util.ArrayList;
2public class ArrayListAddAllMethod
3{
4   public static void main(String[] args)
5   {
6      // creating an empty ArrayList with initial capacity
7      ArrayList<Integer> al1 = new ArrayList<Integer>(5);
8      al1.add(11);
9      al1.add(13);
10      al1.add(15);
11      // printing all elements of al1
12      System.out.println("ArrayList 1 elements: ");
13      for(Integer number : al1)
14      {
15         System.out.println("Number: " + number);
16      }
17      // creating another empty ArrayList with initial capacity
18      ArrayList<Integer> al2 = new ArrayList<Integer>(5);
19      al2.add(12);
20      al2.add(14);
21      al2.add(16);
22      al2.add(18);
23      // printing all elements of ArrayList2
24      System.out.println("ArrayList 2 elements: ");
25      for(Integer number : al2)
26      {
27         System.out.println("Number: " + number);
28      }
29      // insert all elements of al2 at third position
30      al1.addAll(2, al2);
31      System.out.println("Print all elements: ");
32      // printing all elements in al1
33      for(Integer number : al1)
34      {
35         System.out.println("Number: " + number);
36      }
37   }
38}

1import java.util.ArrayList;
2public class ArrayListAddMethodExample
3{
4   public static void main(String[] args)
5   {
6      // creating an empty ArrayList with initial capacity
7      ArrayList<Integer> al = new ArrayList<Integer>(6);
8      al.add(12);
9      al.add(14);
10      al.add(16);
11      al.add(18);
12      al.add(20);
13      // adding element 15 at fourth position
14      al.add(3, 15);
15      for(Integer number : al)
16      {
17         System.out.println("Number: " + number);
18      }
19   }
20}