1) Choice questions – assessing knowledge of Java, Core Java, I/O system, Lambda Expressions, Exceptions

2) Code gaps – assessing knowledge of Java, Core Java, I/O system, Lambda Expressions, Network Communication

3) Programming task [level: Hard] – Java | Library application – Create an application that allows the library to manage books, their borrowings and prepare some reports about books that were not returned on time. Finish implementation of the missing service methods.

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1) Choice questions – assessing knowledge of Core Java, Java, Serialization, Date and Time, Generics

2) Code gaps – assessing knowledge of Core Java, Java, Memory Management, Network Communication, Lambda Expressions

3) Programming task [level: Medium] – Java | Library application – Creating an application allowing the library to manage books and their borrowings. Your current task is to finish the implementation of missing service methods.

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1) Choice questions – assessing knowledge of Core Java: Network Communication, Generics, Memory Management

2) Code gaps – assessing knowledge of Core Java: Collections, Memory Management, Generics

3) Programming task [level: Easy] – Java | Currency Exchange – Complete the implementation of the Currency Exchange app, which is responsible for managing exchange rates and exchanging the currencies.

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1) Choice questions – assessing knowledge of Java, Core Java, Lambda Expressions, Memory Management

2) Code gaps – assessing knowledge of Core Java, Java, Memory Management, collections, Lambda Expressions

3) Programming task [level: Easy] – Java | Library Application – Creation of an application allowing the library to manage their books stock. Task goal is to finish the implementation of missing service methods.

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1) Choice questions – assessing knowledge of Java and QA

2) Code gaps – assessing knowledge of Java and QA

3) Programming task [level: Medium] – QA | Java, JUnit | Vending Machine – Write unit tests for the verification of a Vending machine.

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1) Choice questions – assessing knowledge of API, Java

2) Code gaps – assessing knowledge of Java, Java Stream API, Streams

3) Programming task [level: Medium] – Java | Standard Search Engine – Implement engine for product searching based on simple and compound predicates.

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1) Choice questions – assessing knowledge of Java

2) Code gaps – assessing knowledge of Java

3) Programming task [level: Hard] – Java | Precomputation Queue – Implement priority queue which will be used on several nodes to asynchronously precompute statistics about product sets.

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1) Choice questions – assessing knowledge of Java

2) Code gaps – assessing knowledge of Java

3) Programming task [level: Medium] – Java | Precomputing Search Engine – Implement the optimized engine for the product search, based on the precomputation task to precompute the results for any set of the options.

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1) Choice questions – assessing knowledge of Java, Multithreading

2) Code gaps – assessing knowledge of MongoDB

3) Programming task [level: Hard] – Java | Circuit Breaker and Retry pattern – Implement circuit breaker, fallback and retry pattern in microservice architecture.

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1) Choice questions – assessing knowledge of Java, Spring Boot, JPA

2) Code gaps – assessing knowledge of Java

3) Programming task [level: Easy] – Java | Spring Boot with JPA queries – Implement SQL queries to find the best streaming platform.

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