Training Jackson - Mastering JSON in Java Applications

$4,620

  • 4 days
  • Onsite
  • 10 people max.
Ref: FGJ296
10 people max.
$4,620
In-company rate: from $7,865 for the whole team
On-site and certification exam on quote
4 days
Onsite

Don't let this gap widen

Why this program matters

  • Without mastering Jackson, Java developers waste 40% of their time on manual JSON parsing, tripling deserialization bugs.

  • Companies suffer 25% of backend incidents from faulty JSON handling, costing an average of 15 000€ per year in maintenance.

  • In 2024, 68% of Java job postings require Jackson; ignoring this skill stalls promotions and career switches.

  • Every quarter without training widens the gap: competitors deploy APIs 2x faster, risking loss of critical market share.

Imed BEN AMOR, Learni trainer · Development expert
Imed BEN AMOR

Learni trainer · Development expert

73%productivity gap
×3cost of inaction
Flag of the United StatesBuilt for US teams
Payment by wire transferEnhanced confidentialityPerfect for companies with 50 to 500 employeesScheduling to fit any time zone

Trusted by — schools, companies and industrial groups

40,844 programs · 25 countries

  • Aptar
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  • Equans
  • EDF
  • Ubisoft
  • Microsoft

Every program built with a dedicated engineer

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Companies: Aptar, ArcelorMittal, Equans, EDF, Ubisoft and Microsoft.

Jackson training objectives

  • Master ObjectMapper and Jackson annotations for professional projects
  • Develop custom serializers and deserializers in enterprise settings
  • Optimize JSON processing performance with advanced Jackson
  • Implement Jackson in Spring Boot for certified APIs
  • Handle polymorphism, validation, and complex JSON streaming
  • Design scalable and secure JSON workflows
  • Deploy Jackson skills to boost productivity

Jackson curriculum: 4 modules over 4 days

Module 1 : Jackson Fundamentals: ObjectMapper Configuration and Basic Annotations (POJOs, JsonProperty)

Quick start with Jackson installation via Maven or Gradle in a real Java project, advanced ObjectMapper configuration for visibility and modules, serialization and deserialization of complex POJOs with @JsonProperty, @JsonIgnore, and @JsonView, practical exercises on enterprise data, interactive debugging of common errors, creation of a first production-ready JSON service.

Module 2 : Advanced Jackson: Custom Serializers and Error Handling (Custom Modules, TreeModel)

Development of custom serializers and deserializers for exotic types like dates or enums, use of JsonNode and TreeModel for dynamic JSON manipulation, integration of validators with @JsonDeserialize, real-world cases from banking or e-commerce APIs, pair-programming workshops with trainer code review, production of reusable modules, unit tests with JUnit to validate robustness in professional contexts.

Module 3 : Jackson Performance: Streaming and Optimization (JsonParser, Buffering)

Exploration of streaming mode with JsonGenerator and JsonParser for large data volumes, memory optimization via buffering and non-blocking I/O, comparative benchmarks on massive datasets, exercises on refactoring existing apps to gain 50% performance, handling edge cases like infinite nested JSON, delivery of an optimized parser connected to a real database, focus on enterprise scalability.

Module 4 : Jackson Integration: Spring Boot and Best Practices (REST APIs, Security)

Jackson configuration in Spring Boot with HttpMessageConverters and @JsonFormat, polymorphism handling via @JsonTypeInfo, securing against JSON injections, workshops on complete REST APIs with Swagger, deployment on Docker containers, review of the end-to-end project code, delivery of certified best practices, action plan for immediate enterprise implementation.

How Jackson skills are assessed

  • Technical MCQ on Jackson annotations and configurations
  • Practical evaluation through development of custom serializers
  • Defense of the end-to-end JSON API project with Jackson

How the Jackson course is taught

  • Courses led by an active expert Java trainer
  • Practical exercises on authentic enterprise cases
  • Evolving end-to-end project over 4 days with Jackson
  • Detailed course materials and source examples provided

Jackson training: access and practical arrangements

The Training Jackson - Mastering JSON in Java Applications program is delivered onsite or remote (blended-learning, virtual classroom, remote presence). At Learni, an industry-certified training organization, every program is built to maximize skills acquisition regardless of the chosen format.

The trainer alternates between demonstrative, interrogative and active methods (through hands-on labs and/or scenarios). This pedagogical approach guarantees concrete learning that's immediately applicable at work.

Equipment required

For the smooth delivery of the Training Jackson - Mastering JSON in Java Applications program, the following equipment is required:

  • Mac or PC computers, high-speed fiber internet, whiteboard or flipchart, projector or interactive touch screen (for remote sessions)
  • Training environments installed on workstations or accessible online
  • Course materials, hands-on exercises and complementary resources
  • Post-training access to materials and educational resources

For intra-company training on a site outside Learni, the client commits to providing all required teaching materials (computers, internet, etc.) for the smooth delivery of the program in line with the prerequisites in the communicated program.

* contact us for remote delivery feasibility** ratio varies depending on the program

Skills assessment methods

Assessment of skills acquired during the Training Jackson - Mastering JSON in Java Applications program is performed through:

  • During training: case studies, hands-on labs and professional scenarios
  • End of training: self-assessment questionnaire and skills evaluation by the trainer
  • After training: completion certificate detailing acquired skills

Program accessibility

Learni is committed to making its programs accessible. All our programs are accessible to people with disabilities. Our teams are available to adapt the pedagogical methods to your specific needs. Please contact us for any adjustment request.

Enrollment terms and lead times

Registration is possible up to 48 business hours before the start of training. All our programs are built for corporate L&D budgets and delivered onsite or remotely.

The Learni story

Founded by engineers and learning experts, Learni's mission is to make high-impact tech training accessible to teams everywhere. We work remotely with organizations across the US and Canada, in your time zone, to help teams upskill fast.

Our method

How Learni guarantees the quality of your Jackson training

Before, during, after: we frame the brief, introduce the trainer, tailor the content and measure impact. You stay in control from kickoff to wrap-up.

Step 1

Rigorous trainer selection

Each trainer is validated on three criteria: hands-on field expertise, proven pedagogy and alignment with your industry.

  • Triple validation: technical, pedagogical, sectoral.
  • Minimum rating 4.8/5 over the last 12 sessions.
Step 2

You meet the trainer beforehand

30-minute video call between you and the selected trainer to validate the fit, adjust content and clear any final doubts.

  • Live briefing on goals and team context.
  • Veto right — we swap the trainer for free if needed.
Step 3

Content tailored to your context

No recycled slides. The syllabus is reworked from your real cases: tools, constraints, vocabulary, ongoing projects.

  • Hands-on cases drawn from your stack and projects.
  • Program co-written then validated by your team.
Step 4

Continuous quality follow-up

Live evaluations, 30/90/180-day check-ins and a consolidation plan. If the impact misses the mark, we rework it.

  • NPS, knowledge quizzes and skills self-assessment.
  • Satisfaction guarantee: fully satisfied or free rework.

A simple promise: you don't pay to discover the trainer on day one. Everything is validated upfront, by you.

A child walking to school with a backpack
Our social commitment

A school kit donated to a child for every training booked

To fight inequalities in access to education, Learni donates a complete school kit to a child in need for every training booked. You build your skills, a child heads back to school.

  • Backpack, notebooks and essential supplies
  • Distributed through our partner charities
  • Included, at no extra cost to you
Enroll and offer a kit
FAQ

Jackson: frequently asked questions

Which tools are used in Jackson training?+
Hands-on work runs on POJOs, jsonProperty, custom Modules, treeModel, jsonParser and buffering. Those tools come from the Jackson program itself, delivered on site over 4 days, so participants practise on the stack they will use at work.
What can participants do after Jackson training?+
They can master ObjectMapper and Jackson annotations for professional projects, develop custom serializers and deserializers in enterprise settings and optimize JSON processing performance with advanced Jackson. Those are the stated objectives of the Jackson program at Intermediate level, checked by the end-of-session assessment.
What does the Jackson program cover, day by day?+
Day 1: Jackson Fundamentals: ObjectMapper Configuration and Basic Annotations (POJOs, JsonProperty). Day 2: Advanced Jackson: Custom Serializers and Error Handling (Custom Modules, TreeModel). Day 3: Jackson Performance: Streaming and Optimization (JsonParser, Buffering). Day 4: Jackson Integration: Spring Boot and Best Practices (REST APIs, Security). The Jackson program runs over 4 days, delivered on site.
How is Jackson training assessed?+
Assessment relies on technical MCQ on Jackson annotations and configurations, practical evaluation through development of custom serializers and defense of the end-to-end JSON API project with Jackson. Learni issues a completion certificate together with the individual assessment report at the end of the Jackson program, which an L&D team can file as evidence.
How much does Jackson training cost per participant?+
Jackson training costs $4,620 per participant. For an in-company team, the flat rate starts at $7,865 for the whole group, up to 8 people. The detailed quote, sent within one business day, adjusts the amount to the format and how far the syllabus is tailored to your team.
How long does Jackson training take?+
4 days, available live online (US time zones) or on-site at your offices. Half-day tracks spread over several weeks are possible so the team stays operational.
Who pays for Jackson training?+
Most US teams pay directly through their company L&D or training budget. Learni invoices in US dollars and accepts bank transfer (ACH/wire) or card, with volume pricing for teams. A purchase order is welcome.
What do participants need to know before Jackson training?+
Proficiency in Java 8+, knowledge of JSON, Maven/Gradle, and REST APIs.
Is a certificate issued after Jackson training?+
Yes. A Learni completion certificate is issued, along with the individual evaluation report. Learni is a certified training provider and prepares for third-party certifications, but does not award them itself.
Does Learni provide the equipment for Jackson training?+
No. A computer and a stable internet connection are required for each participant. Learni provides the learning platform, the trainer and all course materials.
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