We just create a reference of string class without making a object of it and start using it, how is it possible?

String s = "test";

String is a class, so to use it we should create an object of it. But rather we just make a reference of it and give it a value. How is it possible and what concepts are used in it.

The metadata o开发者_运维技巧f String class shows the following :

public sealed class String : IComparable, ICloneable, IConvertible, 
IComparable<string>, IEnumerable<char>, IEnumerable, IEquatable<string> {...}

Kindly explain. Thanks in advance.

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Please see following post at SO

Why string is a reference type, but behaves differently from other reference types?