Top 21 Python Interview Questions Answers for 1 to 2 Years Experienced Programmers

Hello guys, if you are new to programming world, looking for your first Job in software development, particularly for Python developer, and looking for frequently asked Python interview questions then you have come at the right place. Earlier, I have shared best Python courses, books, Python projects, best place to learn Python and many interview questions on Data Structure, System Design, OOP Programming, and Recursion, which are essential topic for any programming interviews, including Python Developers and Engineers and in this article, I am going to share Python questions. These are the questions about Python programming language, Python tools, and Python eco-system in general.

Top 50 Java Collections + Generics Interview Questions and Answers for 1 to 3 Years Experienced

Hello guys, if you are preparing for Java interviews and looking for frequently asked Java generics and Java Collections interview questions then you have come to the right place. In the past, I have shared 130+ core java questions and best courses for Java interviews and In this article, I am going to share the best Java collection and Java Generics interview questions to crack the interview. You will not only get exposure to frequently asked questions but also learn very useful Java topics that will help you in your day job.  By the way, Java Collection and Generic are very important topics for Java Interviews. They also present some of the hardest questions to a programmer when it comes to interviews, especially Generics.

Top 21 Chef Interview Questions and Answers for DevOps Engineers

Hello guys, if you are preparing for DevOps or SysOps interviews where Chef skills are required then you should prepare about common Chef Interview questions. If you already know this and looking for popular Chef Questions then you have come to the right place. Earlier, I have shared Interview questions on essential DevOps Tools like Docker Questions, Kubernetes Questions, Ansible Questions and in general DevOps questions and in this article, I am going to share common Chef interview questions and their answers. If you have used Chef in your project then most likely you will know the answers of all these questions but if you struggle to answer them then you can always checkout these Chef online courses to refresh your knowledge. 

Difference between HashMap vs IdentityHashMap in Java? Example

The IdentityHashMap is one of the lesser known Map implementations from JDK. Unlike general purposes Map implementations like HashMap and LinkedHashMap, it is very special and its internal working is quite different than HashMap. The main difference between IdentityHashMap and HashMap in Java is that the former uses the equality operator (==) instead of the equals() method to compare keys. This means you need the same key object to retrieve the value from IdentityHashMap, you cannot retrieve values by using another key that is logically equal to the previous key. 

How and When to use TreeMap in Java? Example Tutorial

Hello guys, I hope you all are doing well and having lots of fun reading and learning Java Collections together. Today we are here a meet again on our journey of Java. I hope you all have seatbelts buckled up as today it's gonna be an adventurous ride while learning something that is most used in many production applications, coding, and whatnot. Today's topic, TreeMap in Java is very important because it holds a very significant feature Java development kit provides. This is also one class which many Java developer doesn't pay attention but it is really used for many use cases. Most Java developer just keep their attention to ArrayList, HashSet, and HashMap and thus missing out on many cool Java collection classes like TreeMap, WeakHashMap, and LinkedHashMap which saw earlier.

How to delete multiple elements from a LinkedList in Java? SubList() Example

Hello guys, if you are looking for an easy way to remove a sub set of elements from a LinkedList in Java then you have come to the right place. In the past, I have shown you how to sort a LinkedList in Java and how to create your own linked list implementation in Java and in this article, I am going to introduce you with an interesting method which can be used to delete a portion of LinkedList in Java in shot. Yes, there is a method exists  but not many Java developer knows about it. The method is called subList() and you can use this method with clear method in Java to delete a portion of linked list in one shot.

How to use WeakHashMap in Java? Example Tutorial

Hello friends, we are here today again on our journey to Java. I hope everyone is fine and ready to board our train of knowledge. Today we are gonna learn something very interesting and very exciting. Today's topic will definitely be very useful in coding and programming. This topic would surely decrease your time complexity, and space requirements for any task very significantly :p So what's the wait? Let's start!

Top 20 Shell Scripting Interview Questions and Answers

Have you struggle with Shell Scripting interview questions before? Have you been having problems in finding out the kind of questions asked in a Shell Scripting interview? If you have experienced this then it is high time that you find a solution. You cannot lose that dream job anymore and yet you can find with ease all you require to pass your interview. If that interview is a few days away, worry no more because you will get before that panel fully prepared and ready for the day. 

Difference between HashMap vs TreeMap vs LinkedHashMap in Java

Hello guys, if you are wondering when to use HashMap, TreeMap and LinkedHashMap in Java and want to understand difference between them then you are at the right place. Earlier, I have shared difference between HashSet, TreeSet, and LinkedHashSet and in this article, I will explain the difference between these three common Map implementation HashMsp, TreeMap, and LinkedHashMap. Though all three classes like HashMap, LinkedHashMap and TreeMap are implementation of java.util.Map interface, there is some functional difference between them. Perhaps most notable difference between them comes from their iteration order. HashMap makes absolute no guarantee about in which order you can iterate their keys, any application depending upon iteration order of HashMap is fragile, because it can change anytime. In fact, in Java 7, iteration order of HashMap is different than Java 6.