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12 FAQ JDBC interview Q&As

Q1. What are JDBC Statements? What are different types of statements? How can you create them? A1. A statement object is responsible for sending the SQL statements to the Database. Statement objects are created from the connection object and then executed.

The types of statements are: Statement (regular statement...

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12 Web basics every Java web developer must know – Part 2

This extends 12 Web basics every Java web developer must know – Part 1 Q7. What do you understand by client side and server side templating? A7. The modern rich single page web applications built today harness the power of dynamically typed and interpreted languages like JavaScript for faster prototyping...

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14: Java Thread stop, resume, suspend & interrupt interview Q&As

Q1. Why are Thread.stop, Thread.suspend and Thread.resume deprecated? A1. We already learnt that “In Java programming, each object has a lock. A thread can acquire the lock for an object by using the synchronized keyword.” “The JVM uses locks in conjunction with monitors. … Read more ›...

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15 Java old I/O and NIO (i.e. New I/O) interview Q&As

Q1. What is the purpose of Java I/O System? A1. The purpose is to provide an abstraction for all types of I/O like memory, file, directory, network, and pipe. Pipes in Java IO provides the ability for two threads running in the same JVM to communicate with each other. …...

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16 FAQ JMS interview Q&As

Q1. What types of messaging paradigms are provided by JMS? A1. Point-to-Point: provides a traditional queue based mechanism where the client application sends a message through a queue to typically one receiving client that receives messages sequentially. A JMS message queue is an administered object that represents the message destination...

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17 Java Collection interview questions & answers

Java Collections interview questions and answers and Java String class interview Q&As are must know as you can’t write any decent Java application without these 2 APIs. This post focuses on Java Collection interview Q&As on differences between X and Y based on the Java Collection Framework (i.e. … Read...

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17 Java getting started interview questions and answers

These 17 beginner Java interview questions & answers are not only for the entry level job interviews, but also get a good grasp of the beginner level Java concepts.

Q1. Why use Java?
A1. Java is a very popular language as per the TIOBE index.

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3 Java class loading interview Q&As

Q1. What do you know about Java class loading? Explain Java class loaders?
A1. Class loaders are hierarchical. Classes are introduced into the JVM as they are referenced by name in a class that is already running in the JVM. So, how is the very first class loaded?

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3. Multi-Threading – Create a simple framework where work items can be submitted

Q: Create a simple framework where work items can be submitted using Java 8 or later. Here are the use cases: #1: A work item is an instance of a class. #2: The definition of “ … Read more ›...

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4 AOP interview Q&As with Spring, Aspectj & Java annotations examples

Q01. What is AOP, and how does it compliment OOP? A01. AOP stands for “Aspect Oriented Programming” and it compliments OOP. AOP is used for cross cutting concerns like logging, auditing, service retry, deadlock retry, performance profiling, transaction management, etc. In OOP unit of modularity is an object, … Read...

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4 JSF interview Q&As

Q1. What are the 6 key phases of JSF? What other frameworks would you use with JSF, and in which phases do they fit in? A1. JavaServer Faces (JSF) brings a new paradigm to developing Web-based applications in Java. However, it has a number of gaps in its out-of-the-box state....

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4 more Java EE overview interview questions and answers

Q1. How does the new bean validation framework avoid duplication across multiple Java EE layers? A1. Developers often code the same validation logic in multiple layers of an application, which is time consuming and error-prone. At times they put the validation logic in their data model, … Read more ›...

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5 FAQs on transforming your thinking from OOP to FP

Functional Programming (i.e. FP) is prevalent in Big Data (i.e. Spark programming, etc) roles. A must know for Big Data Engineers and Analysts. One needs to get used to the transformation from imperative programming to functional programming. You like it or not, … Read more ›...

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300+ Java Interview FAQs

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