C# private, static, and readonly

Question

I was reviewing some code for log4net and I came across this.

private static readonly ILog logger = LogManager.GetLogger(typeof(AdminClient));

Answer 1

Static variables falls in category of "class variables", a class variable is one that are associated with class instead of class object, on the other hand instance variables are variables that are associted with class object means each time a class object is intialized this object will have its own copy of that "Instance Variable" (non static) while static variable is shared among all objects of classes in running program like size of linked list etc. readonly is c# keyword that is used to make a variable readonly, java doesnt provide such facility you have to write a public method to access variables you dont wanna get tempered.