Do you work as a java developer? Are you looking for new job opportunities in London? Well, as you start filling java vacancies, it’s important to think about the interviews you will be facing. Take a look below to know how to ace an interview to land the job of your dreams!
With increasing competition in this field, recruiters appointing Java Developers these days are very resolute in their priorities set for hiring a new employee. Only the developers with proven technical skills in Java, along with the capability to design, code, develop and deploy any type of application are chosen for the job. Since employers prefer assessing your technical know-how, being prepared from before can be one of your wisest decisions ever!
Scroll down below to know the vital important interview questions and answers - and check where you stand!
Java Vacancies In London: Top 5 Interview Questions And Answers For Developers
1. How Will You Differentiate Between J2SDK 5.0 and J2SDK 1.5?
While answering this question, your answer should be - No difference exists between J2SDK 5.0 and J2SDK 1.5. Only the versions have been rebranded.2. Do You Think JVM Is An Overhead?
While answering this question during the interview stage of, you should respond both yes and no. Tell the recruiters that the JVM layer translates Byte code into Machine code. When compared to other languages like C, it provides an additional layer of translating the source code. Thus, in spite of looking like an overhead, this extra translation allows Java to run apps on all platforms since the machine code that JVM provides is as per the Operating System.
3. Is It Possible To Load The JVM Package Twice?
Since the number of java vacancies in London is numerous, be extra sure before you answer this question. If you are still not aware of the answer, it’s a yes as it is possible to import the same JVM package twice or thrice. It will have no effect on the computer. No matter how many times you load the class, it will import the class more than once.
4. Can You Tell The Number Of Bits That Is Used For Representing ASCII, UTF- 16, UTF-8 and Unicode?
Your answer should be -• ASCII requires 7 bits- though often represented by 8 bits
• UTF- 16 requires either 16 bits or larger than that
• Unicode requires 16 bits
• UTF-8 requires characters in patterns like - 8, 16 and 18.
5. What Is The Implementation Of A Dictionary With A Large Number Of Words?
Your answer should be - the simplest implementation which can be given for a large number of words is a list where one can place ordered words and then execute a binary search. There can be another implementation with better search performance like HashMap where the key is used as the first word character and its value as a LinkedList.
So what are you still waiting for? Follow the above 5 questions and answers and start preparing for your interviews!
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