Publication date : 05/10/2024
Course : Best practices in Java programming
Practical course - 3d
- 21h00 - Ref. BPJ
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 | Assimilate good design practices |
| Assimilate the different language paradigms: object, functional, declarative |
| Mastering basic types |
| Understanding how the JVM works |
Intended audience
Java application developers, architects and project managers.
Prerequisites
Good knowledge of Java programming. Experience in Java application development required.
Practical details
Hands-on work
The points covered are put into practice through exercises in Eclipse. All exercises are validated by writing and running unit tests.
Course schedule
1 Good design practices
- Layering and orthogonality.
- Managing consistency (strong consistency, long-term consistency).
- The KISS, DRY, POJO and SOC principles.
- Some essential patterns: factory, singleton, prototype, strategy, proxy.
- Asynchronous, non-blocking access to resources.
- Testing: unit tests, integration tests, use of stoppers.
Hands-on work
Applying the layer breakdown approach to a Java project, writing unit tests and integration tests.
2 Best practices in language use
- Best practices in object-oriented programming.
- Best practices in functional programming with lambda expressions.
- Best practices in declarative programming with annotations.
- Immutability.
- Genericity: advantages and limitations.
- Exception handling: business exceptions, technical exceptions, exception wrapping.
Hands-on work
Enhancement of the project started earlier using lambda expressions, annotations and generic types.
3 Best practices for using base types
- The Object class and its methods: equals, hashcode, toString, clone...
- The String class and its special features.
- Representing time with classes in the java.time package.
- Collections (List, Set, Queue), maps.
- The Optional class to limit the risk of NullPointerException.
- The Optional class.
- Stream interface.
- The CompletableFuture class for asynchronous programming.
Hands-on work
Application of Stream to the project started earlier, optimal use of Java base types.
4 Understanding how the JVM works
- Just in time (JIT) compiler.
- The principle of tiered compilation.
- Two memory zones: the heap and the stack.
- The various garbage collectors (G1, Shenandoah, ZGC).
- Compiling ahead of time (AOT) with GraalVM.
Hands-on work
Observation of application memory usage.
Customer reviews
4,7 / 5
Customer reviews are based on end-of-course evaluations. The score is calculated from all evaluations within the past year. Only reviews with a textual comment are displayed.
XAVIER B.
22/10/25
5 / 5
A good balance between theory and practice, with well-constructed exercises that enable you to apply the best practices you have learned and to repeat them, optimise your code, etc.
SIMON C.
22/10/25
5 / 5
Very good, lots of subjects to see in 3 days, but it goes down well
CHARLY C.
22/10/25
5 / 5
The trainer was very educational and very nice! Thanks Peter :) The content was very good.
PARTICIPANTS
Java application developers, architects and project managers.
PREREQUISITES
Good knowledge of Java programming. Experience in Java application development required.
TRAINER QUALIFICATIONS
The experts leading the training are specialists in the covered subjects. They have been approved by our instructional teams for both their professional knowledge and their teaching ability, for each course they teach. They have at least five to ten years of experience in their field and hold (or have held) decision-making positions in companies.
ASSESSMENT TERMS
The trainer evaluates each participant’s academic progress throughout the training using multiple choice, scenarios, hands-on work and more.
Participants also complete a placement test before and after the course to measure the skills they’ve developed.
TERMS AND DEADLINES
Registration must be completed 24 hours before the start of the training.
ACCESSIBILITY FOR PEOPLE WITH DISABILITIES
Do you need special accessibility accommodations? Contact Mrs. Fosse, Disability Manager, at psh-accueil@orsys.fr to review your request and its feasibility.
Java application developers, architects and project managers.
PREREQUISITES
Good knowledge of Java programming. Experience in Java application development required.
TRAINER QUALIFICATIONS
The experts leading the training are specialists in the covered subjects. They have been approved by our instructional teams for both their professional knowledge and their teaching ability, for each course they teach. They have at least five to ten years of experience in their field and hold (or have held) decision-making positions in companies.
ASSESSMENT TERMS
The trainer evaluates each participant’s academic progress throughout the training using multiple choice, scenarios, hands-on work and more.
Participants also complete a placement test before and after the course to measure the skills they’ve developed.
TEACHING AIDS AND TECHNICAL RESOURCES
• The main teaching aids and instructional methods used in the training are audiovisual aids, documentation and course material, hands-on application exercises and corrected exercises for practical training courses, case studies and coverage of real cases for training seminars.
• At the end of each course or seminar, ORSYS provides participants with a course evaluation questionnaire that is analysed by our instructional teams.
• A check-in sheet for each half-day of attendance is provided at the end of the training, along with a course completion certificate if the trainee attended the entire session.
• The main teaching aids and instructional methods used in the training are audiovisual aids, documentation and course material, hands-on application exercises and corrected exercises for practical training courses, case studies and coverage of real cases for training seminars.
• At the end of each course or seminar, ORSYS provides participants with a course evaluation questionnaire that is analysed by our instructional teams.
• A check-in sheet for each half-day of attendance is provided at the end of the training, along with a course completion certificate if the trainee attended the entire session.
TERMS AND DEADLINES
Registration must be completed 24 hours before the start of the training.
ACCESSIBILITY FOR PEOPLE WITH DISABILITIES
Do you need special accessibility accommodations? Contact Mrs. Fosse, Disability Manager, at psh-accueil@orsys.fr to review your request and its feasibility.
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