Difference between ArrayList and Array of object [duplicate]

Question

I am not able to make the difference between ArrayList and Array of objects in java. I am just a beginner. Also I am not able to understand that why Array is sorted by Arrays.sort and ArrayList is sorted by Collections.sort if both are array only.

Hey Parth, definitely check out those links provided. There are several types of arrays, and they use different notions of natural ordering in sort. — MathBio
– MathBio, Commented Feb 23, 2016 at 20:31
As far as Java's concerned, they're nothing like the same type. ArrayList has an array in its implementation, but as far as Java's concerned that's the only overlap. — Louis Wasserman
– Louis Wasserman, Commented Feb 23, 2016 at 20:32
Collections is a class that can't be instantiated, so, neither. Collection is an interface. — Louis Wasserman
– Louis Wasserman, Commented Feb 23, 2016 at 20:34

Zach · Accepted Answer · 2016-02-23 20:33:32Z

2

The short answer is arrays have a set size you define where as an arraylist has infinite size. You'll learn a lot about them from the api

https://docs.oracle.com/javase/7/docs/api/java/lang/reflect/Array.html

https://docs.oracle.com/javase/7/docs/api/java/util/ArrayList.html

answered Feb 23, 2016 at 20:33

Zach

6502 gold badges9 silver badges22 bronze badges

Sign up to request clarification or add additional context in comments.

Collectives™ on Stack Overflow

Difference between ArrayList and Array of object [duplicate]

1 Answer 1

Comments

Linked

Hot Network Questions

Collectives™ on Stack Overflow

1 Answer 1

Comments

Linked

Related