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Introduction to Programming

You're reading from Introduction to Programming Learn to program in Java with data structures, algorithms, and logic

Product type Paperback

Published in Jun 2018

Publisher Packt

ISBN-13 9781788839129

Length 722 pages

Edition 1st Edition

Languages

Java

Concepts

Programming Language

Author (1):

Nick Samoylov

View More author details

Table of Contents (21) Chapters

Preface

1. Java Virtual Machine (JVM) on Your Computer FREE CHAPTER

2. Java Language Basics

3. Your Development Environment Setup

4. Your First Java Project

5. Java Language Elements and Types

6. Interfaces, Classes, and Object Construction

7. Packages and Accessibility (Visibility)

8. Object-Oriented Design (OOD) Principles

9. Operators, Expressions, and Statements

10. Control Flow Statements

11. JVM Processes and Garbage Collection

12. Java Standard and External Libraries

13. Java Collections

14. Managing Collections and Arrays

15. Managing Objects, Strings, Time, and Random Numbers

16. Database Programming

17. Lambda Expressions and Functional Programming

18. Streams and Pipelines

19. Reactive Systems

20. Other Books You May Enjoy

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Exercise – JUnit @Before and @After annotations

Read the JUnit user guide (https://junit.org/junit5/docs/current/user-guide) and the class SampleMathTest two new methods:

One that is executed only once before any test method is run
One that is executed only once after all the test methods were run

We did not talk about it, so you would need to do some research.

Answer

For JUnit 5, the annotations that can be used for this purpose are @BeforeAll and @AfterAll. Here is the demonstration code:

public class DemoTest {
  @BeforeAll
  static void beforeAll(){
    System.out.println("beforeAll is executed");
  }
  @AfterAll
  static void afterAll(){
    System.out.println("afterAll is executed");
  }
  @Test
 ...

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Authors (1)

Nick Samoylov

Nick Samoylov

Nick Samoylov graduated from Moscow Institute of Physics and Technology, working as a theoretical physicist and learning to program as a tool for testing his mathematical models. After the demise of the USSR, Nick created and successfully ran a software company, but was forced to close it under the pressure of governmental and criminal rackets. In 1999, with his wife Luda and two daughters, he emigrated to the USA and has been living in Colorado since then, working as a Java programmer. In his free time, Nick likes to write and hike in the Rocky Mountains.

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