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Q29-Q53: ♦ Top 50+ EE Java Interview Questions & Answers

This extends Q1 – Q28 EE Java interview Questions and Answers Q29. What are the different ways can you wire up your dependencies using Spring? A29. 3 different ways. You can combine all 3 ways. Using an XML based application context file as demonstrated here in STEP 4 . Using…...

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01: ♥♦ Q01 – Q07 Spring interview questions & answers

Q1. What do you understand by the terms Dependency Inversion Principle (DIP), Dependency Injection (DI) and Inversion of Control (IoC) container? A1. The differences are very subtle and can be hard to understand. Hence, explained via code samples. 1) Dependency Inversion Principle (DIP): is one of the 6 OO design

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001B: ♦ Q&As on high level Java architectural patterns

Continuation of Java architecture interview Q&A with integration styles & architecture diagrams – part 1 Q3. Can you discuss some of the high level architectures you are experienced with? A3. Be prepared for a white board session on architectures, especially the bird’s eye view of the last application you had…...

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♦ 12 FAQ JDBC interview questions and answers

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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001A: ♥♦ 7+ Java Interview Q&As on high level architectures & integration styles

One of the very frequently asked open-ended interview questions is – Can you describe the high-level architecture of the recent application you had worked on from a 100 feet? You will be asked to 1) draw a diagram on a white board and 2) follow up questions based on your

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8 JPA interview questions and answers

Q1. What is a JPA? What are its key components? A1. The process of mapping Java objects to database tables and vice versa is called “Object-relational mapping” (ORM). The Java Persistence API provides Java developers with an object/relational mapping (ORM) facility for managing relational data in Java applications. JPA is…...

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01: ♥♦ Q01 – Q07 Hibernate interview questions & answers

Q1. What is an Object-to-Relational Mapping (i.e. ORM) tool? A1. There are several ways to persist data to a database from your Java applications. 1) Direct JDBC SQL statements for the CRUD (Create, Read, Update, and Delete) operations. Direct JDBC is more SQL centric. You need to write all the

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04 ♦ 17 Spring bean life cycles & scopes FAQ interview Questions & Answers

Q1. Does Spring dependency injection happen during compile time or runtime? A1. Runtime during creating an object. Q2. What is the difference between prototype scope and singleton scope? Which one is the default? A2.Singleton means single bean instance per IoC container, and prototype means any number of object instances per…...

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