In order for a computer to be able to store text and numbers that humans can understand, there needs to be a code that transforms characters into numbers. TheUnicode standard defines such a code by using character encoding.
Somebody asked a question : How to explain dependency injection to a 5-year old?
Well, sounds like that kid’s in for a hard life…
I suggest, start with “Once upon a time” 😛
Often, I here about an interview question being asked that is “What is composition and aggregation ?” Or “What is the difference between composition and aggregation ?”
And trust me if you don’t know already, a lot of people (sometimes experienced developers) get stuck on this question.
This is one of the basic question asked in interviews or in gatherings of professionals.
So here we go,
Main method is static in java because
This is just a convention. In fact, even the name main(), and the arguments passed in are purely convention.
Deadlocks in Java is one of the tough categories in which interview questions are asked about multithreading, asked more at a senior level and with lots of follow up questions, though question looks very basic but most of developer get stuck once you start going deep.
The question might start with “What is deadlock ?”
If you haven’t read the Cup Size story, this one won’t make sense. Or it will make sense, but you’ll think its really stupid. Or you won’t think it’s stupid but you’ll find yourself… never mind, just go read it now and then come back.
Whenever we write a servlet, we inherit our class from HttpServlet which contains two service methods. Let’s have a look at the difference between both.
This article assumes that you have a basic knowledge of method overriding and overloading.