As of Age of Technology Java is the most popularly known programming languages in the world. According to Oracle, over 3 billion devices are running on Java technology. We can create a standalone application, web application, IoT apps based on Java. Android also based on Java.
So, when it comes to choosing a programming language for a better carrier in Software Industry – Java makes a decent choice.
How to Prepare for Java Interview
01. Keep yourself updated:
Stay updated with the latest version and what all features introduced in it. As of writing this article, Java 12 is the newest version. So, if you know about it, it shows that you keep yourself updated with the latest trends in the industry.
02. Read Online Resources:
There are tons of articles available online to help you with Interview. However, I like JournalDev articles because they always keep it updated with the latest version changes. Do check out the Java Interview Questions page where they have shared interview questions on Core Java, Spring, and other popular Java frameworks.
03. Read Official Docs:
Finally, make sure to read the Oracle Official Documentation for Java. You will find documentation for Java SE as well as Java EE. It would be nice to read the Release Notes of the latest version to showcase your eagerness to learn the latest features.
04. Practice:
Practice, Practice: Nothing will help you if you don’t have excellent coding skills. Most of the java interviewer asks some coding related questions, so practice a lot of code related questions. There are some excellent articles on JournalDev for String and Pattern associated programs.
05. YouTube Videos:
I am not a huge fan of videos because of technology changes fast, and it’s not possible to update a video. Most of the time, you will find YouTube videos that are created before Java 8. And the chances are that the interview will revolve around the latest features, so unless the video is recently uploaded and using latest features, I will give it a pass.
Hot Topics for Java Interview
Let’s have a look at some of the hot topics for Java Interview.
01. Java String Class:
Almost every java interview starts with questions around String class functions, String pool, etc.
02. Java Collections:
Collections API is enormous; you will be asked a lot of questions related to Data Structures such as List, Set, Map, LinkedList, Iterators, etc. Also, have a decent knowledge of Stream API and Lambda expressions.
03. Multithreading:
It’s a good idea to brush up your skills on Java Threads, Deadlocks, Thread Dump, etc.
04. Exception Handling:
Learn about exception handling and best practices associated with it.
05. Spring Framework:
Spring is the most popular Java-based framework. It’s used to build a web application as well as RESTful web services. Spring Boot provides a lot of flexibility to develop applications quickly that are production ready. So, learn Spring framework because most of the time it’s used in Java-based development.
06. Hibernate:
Its is the most widely used framework to work with relational databases. So, having good knowledge of Hibernate will be a plus point for you.
Conclusions:
Java is very popular, and it will stay popular in the coming ten years. If you like to build your carrier in Java, make sure to learn it properly and then attend interviews to get the job you want.