https://github.com/pauloportugal/java-interviews

A collection of pair programming interview problems
https://github.com/pauloportugal/java-interviews

interview-questions java java-17 tdd tdd-java

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A collection of pair programming interview problems

• Host: GitHub
• URL: https://github.com/pauloportugal/java-interviews
• Owner: PauloPortugal
• License: mit
• Created: 2023-03-03T22:01:04.000Z (almost 2 years ago)
• Default Branch: main
• Last Pushed: 2023-03-04T20:30:47.000Z (almost 2 years ago)
• Last Synced: 2024-12-06T15:05:38.631Z (about 2 months ago)
• Topics: interview-questions, java, java-17, tdd, tdd-java
• Language: Java
• Homepage:
• Size: 23.4 KB
• Stars: 1
• Watchers: 1
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

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README

        
# Java Programming Interview Problems

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A collection of pair programming interview problems, using idiomatic Java and avoid as much as possible third-party libraries.

The solutions express just an approach to a problem. 

There may be some more elegant and performant solutions.

### Dependencies

 * [Java 17](https://www.oracle.com/java/technologies/javase/17-relnote-issues.html)

 * [jUnit 5](https://junit.org/junit5/)

 * [Sonatype OSS Index](https://sonatype.github.io/ossindex-maven/maven-plugin/)

### Java Problems

 * Factorial

 * Fibonacci Sequence

 * Largest Prime Factor

 * Palindrome

 * Pascal's Triangle

 * Prime Number Check

 * Real FizzBuzz

 * Reverse Generic Array

### Java features ordered by releases

Not an extensive list, but mainly the most practical features.

| **Feature**                                           | **Version**   |

|-------------------------------------------------------|---------------|

| Lambda Expressions                                    | Java 8        |

| Interface Extension Method ('default' concrete)       | Java 8        |

| Interface private methods                             | Java 9        |

| Autoboxing/Unboxing                                   | Java 9        |

| anonymous array                                       | Java 9        |

| @summary for APIS doc                                 | Java 10       |

| Optional.orElseThrow()                                | Java 10       |

| var keyword for Type inference                        | Java 10       |

| Enhanced Switch statement                             | Java 12       |

| Switch yield return value                             | Java 12/13    |

| Text Block                                            | Java 13/14/15 |

| Java record                                           | Java 14/16    |

| Pattern Matching for the 'instanceof' Operator        | Java 16       |

| Sealed Classes                                        | Java 16/17    |

| Pattern Matching for switch                           | Java 17       |

| UTF-8 by default                                      | Java 18       |

| Code snippets in API documentation                    | Java 18       |

| Record Pattern Matching for the 'instanceof' Operator | Java 19       |

| Virtual threads                                       | Java 19       |