Doubt in ArrayList Basics

[dayalan kumar]

Hi All,

I have a doubt in arraylist topic from K&B scjp6 book. in objective 6.3 "ArrayList" Basics there will be a line

List<String> myList = new ArrayList<String>();
"This kind of declaration follows the object oriented programming principle of 'coding to an interface', and it makes use of generics."

Please clarify my doubt "List is an interface" and "ArrayList" is a class which implements "List" interface and why we are using "new" keword in the above statement. I know its a very basic question, as am a beginner please clarify my doubt.

Thanks.

[Rico Felix]

You can probably get an understanding by reading this post >> Interface Concept in Java
As well as this post >> Interface

[Jeanne Boyarsky]

"new" instantiates a new object. So that code creates a new object of (concrete class) ArrayList. It then stores a reference to that object in the List interface variable.

[dayalan kumar]

Thank you All for the reply.