What is difference between Array and ArrayList ??

Answer 1

Array is fixed size but Arraylist is not fixed size. If you use array you need to assign fix size of the array and you not able to use more then that. But if use ArraList no need to assign any size. If you more it will enlarge automatically or delete data shrink the itself.

Answer 2

thankx

Answer 3

In Java language:

ArrayList can not store primitive data types (like int , float , double) it can only contain Object type data.
An Array can contain both primitive data types as well as objects.

They have different methods for finding thier length:
ArrayList is provided by the size() method
Array has the length variable which returns the length of the array

See more at: http://javahungry.blogspot.com/2015/03/difference-between-array-and-arraylist-in-java-example.html