Unlike traditional programming interviews, Java Interviews uses tech product and service companies such as Amazon, Google, Facebook or Microsoft. Despite the fact that it has some questions on Algorithms and Data structures, you can still be able to handle Java interviews whether you are an expert or not. Java programming questions are more practical and quite easier and use questions based on Java language, API as well as JDK. While Java is an OOP language as well, there are many Object Oriented Programming questions in Java interviews. Also, Java Programming Language is mainly used for designing application software. Thus the focus is brought into line accordingly with the majority of its questions focusing on Java concepts, API as well as design patterns.
Topics to choose when preparing for Java Interviews:
As mentioned earlier, the ideal topics depend on user’s experience. Besides, the Job description is also another determining factor on which topic to choose when you want to prepare for java interviews since it’s the most reliable guide when preparing for important topics. For instance, if you are applying for a core Java multi-threading application job, in that case, you have to prepare adequately for core Java units such as concurrency, multi-threading, Generics, Java Collections, GC Algorithms, Enum as well as JVM internals. Likewise, if you are applying for Java Web application job, take your time to prepare XML, SOAP, JSON, REST and other topics related to Java Web Application design and maintenance. Web app developers should practice more on JSP, Spring, Servlet and Hibernate than JVM and multi-threading units. For Android developers, understanding Android API in addition to Java basics is also necessary. Below, I have listed the topics recommended to anybody preparing for Java interviews.
- Java Fundamentals.
- Object Oriented Concepts.
- Arrays and String.
- Multithreading and concurrency.
- Data type fundamentals and conversations.
- GOF Design Patterns.
- Java Collections Framework.
- Abstract class and interface.
- Java Algorithm and Data Structures.
- XML and JVM processing.
Best Java Books for Preparing Java Interviews:
There are lots of Java preparation books online, and choosing the appropriate one largely depends on your learning speed as well as your programming experience. If you desire to build a programming career, understanding Java language is a must. Learning Java is done progressively starting from core Java to complex Java frameworks, understanding basic Java will make it easier for you to understand other Java frameworks.
1. Cracking Coding Interview and Java Exposed:
You can perfect your Java Programming skills using books like Cracking coding interview and Java interview exposed. These books are meant particularly for Java Programming interviews, and they will offer you everything required when it comes to Java programming interviews. There are also questions asked by well-known companies such as Google, Facebook, Barclays and many others in these books.
2. Head First Java:
This is a nice book for you to read. The good part of it is its simplicity and how well it transforms Java programming language to real life situation. Though there are some updates and contemporary changes that need to be done to this it, this book is essential for anybody who wants to be familiar with OOPS concepts, also unlike other Java programming language books, Head First Java is always interesting.
3. A Beginner’s Guide:
If you are a junior developer, this book is recommended for you since it’s the best Java book for beginners. The reason being that it’s a nice book for people having basic programming knowledge who want to take part in learning java language. In other words, it is one of the best java books for beginners. Some of the best features that come with this book are end of chapter questions and Hands-on exercises to assess whether you’ve understood what you learned. Alternatively, you can use the 8th edition as there are a lot of important changes introduced in this latest edition.
That’s all you have to know when it comes to preparing Java interviews. Since Java Programming is a full field, you can narrow down deeper to specific areas depending on your area of specialization or Job description. Also, reading Java Books daily and practicing regularly will make you enthusiastic and answer all questions confidently during Java Interviews.