What are Java Arrays ?

Arrays are objects that store multiple variables of the same data type. However, an Array itself is an object on the heap.

We define the variable type with square brackets: like String studentNames[];

Here, we have declared String type Student Name in array

• An array is a collection of homogenous(similar type) collection of elements which have a contiguous memory location.

• We can store only a fixed number of elements in an array.

• It is based on index. Indexing always starts from 0 and goes to length-1.

• Arrays are used to store multiple values of same datatype in a single variable, instead of declaring separate variables for each value.

Program 1:-
public class ArraysExample
{
 public static void main(String[] args)
 {
  String[] friends = {"Heera", "Navneet", "Sajan", "Sourav"};
  for (int i = 0; i < friends.length; i++)
  {
   System.out.println(friends[i]);
  }
 }
}