10 JAVA questions you should be prepared for in an interview
If you’re planning on going for a programming interview anytime soon, we can understand your nerves being all over the place. JAVA is a language that is known to be easy-to-understand. What makes the interview challenging then? The applications of it. It is important to understand and apply your knowledge well in order to crack the interview. For that, we suggest taking up JAVA classes in Pune. Strong theoretical knowledge will make you more confident in the interview.
Apart from the knowledge you gather from these classes, it is also vital to have practised the usage. Interviewers are likely to question you about the usage through various questions. If your practical knowledge is strong, it will be easy for you to offer solutions.
Before we deep dive into the possible questions that you can be asked in an interview, let us go over the many benefits of learning JAVA briefly.
Benefits of JAVA
It is easy to use
It is platform independent. They follow the policy of ‘Write once, Run anywhere’
It is object-oriented
It is affordable
It is one of the best for app development
It has a global community of users
It has been around for 25 years - very trustworthy
Now that you know why you should learn this programming language, let us look at the top 10 questions that are asked in an interview for a job related to JAVA.
Top categories touched on by Interviewers
Questions in an interview are generally picked out from different categories. Some of the categories that interviewers target are:
JAVA basics
About the ecosystem, tools used, JVM, etc
Methods used
Commonly used methods, method overloading, etc
Classes
Types of classes, how to use each one, etc
Generics
Types of generics, bridge methods, why generics are used, etc
Management of Memory
How memory is managed, usage, tuning, collection of garbage, etc
Reflection
What it is, modifiers, classloaders, etc
Top 10 questions asked in a JAVA interview
Let’s cut to the chase. Here is a list of the top 10 questions you may be asked in a JAVA interview.
Do you know what a volatile keyword is? How and when is it used?
If there is an exception thrown in by another thread in JAVA, how can you catch it?
What is a classloader in JAVA? Tell us the different types and what is their individual purpose
It is said that JAVA enums are more powerful than integer constants. How can this be used to optimise output?
When we say a collection is ‘backed by’ another, what does that mean? Can you explain with an example
How is static loading different from dynamic loading?
What is the difference between JVM and JRE?
Which is the base class for all exception classes?
What are fail-fast and fail-safe iterators? What is the difference between them?
What is JSON?
Having this skill set in your CV will help you form a strong foundation for all future software courses. Sign up for JAVA courses in Pune to be prepared for a successful career.









