RESTful Java Web Services Interview Questions You'll Most Likely Be Asked

Second Edition

Vibrant Publishers

• Publisher: Vibrant Publishers
• Year: 2019
• eBook ISBN: 9781949395501
• Edition: 2
• Topic: Computer Science
• Subtopic: Programming in Java
• Index: Computer Science

· 200 RESTful Java Web Services Interview Questions

· 75 HR Interview Questions

· Real life scenario-based questions

· Strategies to respond to interview questions

· 2 Aptitude Tests

These questions are across a wide range of topics. Some of the topics included are:

- REST Basics (Introduction to REST, HTTP, etc)

- JAX-RS (Standard Java API for REST services)

- Spring REST (Another very popular REST implementation for Java)

- JSON (Data interchange format for REST)

- Postman (Very popular testing tool for REST services)

- Swagger (Very popular documentation tool for REST)

RESTful Java Web Services Interview Questions You'll Most Likely Be Asked is a perfect companion to stand ahead above the rest in today's competitive job market. Rather than going through comprehensive, textbook-sized reference guides, this book includes only the information required immediately for job search to build an IT career. This book puts the interviewee in the driver's seat and helps them steer their way to impress the interviewer.

Includes:

a) 200 RESTful Java Web Services Interview Questions, Answers and proven strategies for getting hired as an IT professional

b) Dozens of examples to respond to interview questions

c) 75 HR Questions with Answers and proven strategies to give specific, impressive, answers that help nail the interviews

d) 2 Aptitude Tests download available

INDEX

RESTful Java Web Services Interview Questions

Introduction to REST

1: What is REST?

2: Which are the six principles on which REST API is based?

3: Why is a REST service considered stateless?

4: Explain the differences between SOAP and REST.

5: What are the steps in building a RESTful API?

6: What are the benefits of using a REST API?

7: Explain the HATEOAS principle in REST with an example.

8: How is a REST application different from an ordinary web application?

9: Explain the principles of the Uniform Interface constraint.

10: What does the term “messaging” refer to in the context of a REST application?

REST Resources, HTTP Methods and Status Codes

11: What is a resource in REST?

12: Explain URI in the context of a REST application.

13: Name the HTTP methods used by REST and explain each method.

14: What does an HTTP request consist of?

15: What do the terms "Safety" and Idempotency" mean in the context of the HTTP methods used in a REST application?

16: What is the use of the HTTP HEAD method?

17: What is the difference between HTTP POST and HTTP PUT methods?

18: Explain the categories of the HTTP status codes.

19: What is the HTTP status code 401 used for?

20: What is the difference between the 4xx and 5xx codes?

Java REST APIs and Implementations

21: What are the options available to develop RESTful services in Java?

22: Name some implementations of the JAX-RS API and explain.

23: What are the differences between Jersey and RESTEasy?

24: What is the difference between Jersey and Spring REST?

25: What is Jackson?

26: What is JAXB?

27: What is RESTlet?

28: What are the steps in building a REST application that uses Jersey in Eclipse?

29: What are the advantages of Spring REST?

30: Can Jersey be used with Spring? If so, how?

JAX–RS Basics

31: Which Java API is used for building a REST service?

32: What are the advantages of the JAX-RS specification?

33: Which JAX-RS annotations map to the HTTP methods?

34: Write a code sample that demonstrates a REST method that processes a GET request.

35: Write a sample code that demonstrates saving a custom object via REST.

36: What is HTTP content negotiation and how is it handled by JAX-RS?

37: Which classes are available in JAX-RS framework that help to implement the HATEOAS principle?

38: What is the use of the @Produces and @Consumes annotations?

39: How does client request matching work?

JAX-RS Request Handling

40: What is the use of the @Path annotation?

41: Write a code sample that uses the @PathParam annotation.

42: What is the difference between @QueryParam and @PathParam?

43: What is the use of the @HeaderParam annotation? Explain with an example.

44: Which annotation should be used to consolidate input parameters to a JAX-RS method? Explain with a code sample.

45: What is the @CookieParam annotation used for?

46: What is the use of the @DefaultValue annotation?

47: How are matrix parameters different from query parameters?

JAX-RS Response Handling

48: Write a code sample that demonstrates a REST method that returns data in plain text format.

49: Explain the javax.ws.rs.core.Response class and what it is used for.

50: What is the ResponseBuilder class? Explain with a code sample.

51: What is the use of the Response.created method?

52: How can you create a Response object with a particular status code...

Table of contents

• Introduction to REST
• Rest Resources, HTTP Methods and Status Codes
• Java REST APIs and Implementations
• JAX–RS Basics
• JAX–RS Request Handling
• JAX–RS Response Handling
• JAX–RS Exception Handling
• JAX–RS Client
• JAX–RS Filters
• JAX–RS Asynchronous Processing
• JAX–RS Security
• JAX–RS Miscellaneous
• Spring REST Basics
• Spring REST Request Processing
• Spring REST Response Processing
• Spring REST Exception Handling
• Spring REST Client
• JSON
• Postman
• Swagger
• Miscellaneous
• HR Interview Questions
• INDEX