Arrays in java:

• An array is the basic Data Structure that contains items of similar data types.
• There is always an ordering amongst the position of the element.
• It can be accessed with the help of the indices. Java supports 0-indexed arrays. Means the array index starts with 0 in java.
• We can declare array in java as-
  1.int[] arr = new int[size];
  2.int[] arr = {1,2,3…};
  3.int[] arr = new int[]{1,2,3,...};