Java Questions

Language attribute contains the javascript versions.

"eval" is not a keyword and is can be used as variable.

JavaScript, often abbreviated as JS, is a high-level, interpreted programming language that conforms to the ECMAScript specification.

JavaScript has

* curly-bracket syntax,

* dynamic typing,

* prototype-based object-orientation, and

* first-class functions.

Uses :

It is well-known as the scripting language for Web pages, many non-browser environments also use it, such as Node.js, Apache CouchDB and Adobe Acrobat.

Open addressing (closed hashing),

The methods used include: Overflow block,

 Closed addressing (open hashing)

The methods used include: Linked list, Binary tree…

A class can have any number of constructors. If a class have more than one constructor, we call it as the constructor is overloaded.

Constructors use this to refer to another constructor in the same class with a different parameter list.

Constructors use super to invoke the superclass's constructor. If a constructor uses super, it must use it in the first line; otherwise, the compiler will complain.

java.lang.String,  java.lang.Math are final classes.