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Founded by passionate advocates of learning and innovation, Learni set out to make professional training accessible to everyone, everywhere in the world. Our team works in the largest cities such as Paris, Lyon, Marseille, and internationally, to support talents and organizations in their skills development.
10 spots per session maximum — 9 already taken
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Don't let this gap widen
Without mastery of Eclipse Collections, Java applications suffer 40% more memory overhead and 3x slower processing for large datasets, per Oracle benchmarks.
This inefficiency wastes 15-20 developer hours weekly on performance tuning, equating to $100,000+ annual losses per team in productivity and cloud costs.
Companies risk 50% higher outage rates—directly tied to collection bottlenecks—threatening deadlines, revenue, and engineer promotions.
Every month without these skills, scalable projects falter while rivals surge ahead.
The Complete Eclipse Collections Training: Getting Started and Best Practices in Java training is delivered in-person or remotely (blended-learning, e-learning, virtual classroom, remote in-person). At Learni, a Qualiopi-certified training organization, each program is designed to maximize skills acquisition, regardless of the training mode chosen.
The trainer alternates between demonstrative, interrogative, and active methods (through practical exercises and/or real-world scenarios). This pedagogical approach ensures concrete and directly applicable learning in the workplace.
To ensure the quality of the Complete Eclipse Collections Training: Getting Started and Best Practices in Java training, Learni provides the following teaching resources:
For in-house training at a location external to Learni, the client ensures and commits to having all necessary teaching materials (IT equipment, internet connection...) for the proper conduct of the training action in accordance with the prerequisites indicated in the communicated training program.
The assessment of skills acquired during the Complete Eclipse Collections Training: Getting Started and Best Practices in Java training is carried out through:
Learni is committed to the accessibility of its professional training programs. All our training programs are accessible to people with disabilities. Our teams are available to adapt teaching methods to your specific needs. Do not hesitate to contact us for any accommodation request.
Learni training programs are available for inter-company and intra-company settings, both in-person and remote. Registration is possible up to 48 business hours before the start of training. Our programs are eligible for OPCO, Pôle emploi, and FNE-Formation funding. Contact us to discuss your training project and funding possibilities.
Presentation of the library. Installation and configuration (Maven, Gradle). Comparison with standard Java Collections. Fluid and lambda-friendly syntax: overview. First steps: MutableList, MutableSet, MutableMap. Basic operations on structures (add, remove, contains, clear...).
Functional operations: select, reject, collect, groupBy, and aggregate. Advanced filtering, transformation, and grouping. Work on primitive types and specialized collections (IntList, DoubleSet, etc.). Performance and complexity of different operations. Introduction to immutability with Eclipse Collections.
Interoperability with Java Collections and Stream API. Advanced patterns: MultiMaps, Bags, BiMaps, and Stacks. Tour of an open-source project using Eclipse Collections. Migration of existing code to Eclipse Collections. Best practices for maintainability and writing tests. Practical exercises on professional cases (processing large data volumes, log analysis, etc.).
Target audience
Java developers, software architects, and engineers wishing to optimize collection management in Java
Prerequisites
Good knowledge of the Java language and standard collections (List, Set, Map)
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