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.
1 seat held for the next session
30:00Held for another
Request a call back and an advisor reaches you within 24 business hours, Monday to Saturday.
Training: Developing Java Command-Line Tools with Picocli - The Complete Course
Trusted by — schools, companies and industrial groups
Every program built with a dedicated engineer
Learning objectives
- Understand the fundamental principles of modern CLI development with Picocli
- Create, configure, and structure robust and user-friendly command-line tools and applications
- Manage validation, arguments, subcommands, and advanced options
- Optimize the CLI user experience via autocompletion, documentation generation, and shell support
- Implement testing, maintenance, and deployment of CLI programs in production
Our social commitment
A school kit donated to a child for every training
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
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.
Don't let this gap widen
Why this program matters
Without mastery of high-performance Java command-line tools, your CLI scripts become bottlenecks that multiply bugs and wasted iterations.
A team loses an average of 25% productivity on automation tasks, or 10 hours per week per developer wasted on manual debugging.
35% of production incidents at Java companies stem from poorly designed CLIs, resulting in direct costs of 5 000 € per unplanned downtime.
Each month without solid skills exposes your career to obsolescence and your company to critical delays against agile competition.
Program
Module 1Getting Started with Picocli and Architecture of a Modern CLI Program
Introduction to Picocli, installation, history, and context; First steps: creating a Java project with Picocli; Fundamental principles: annotations, parsing of options and arguments, structure of the main command; Best practices for scalable CLI architecture; Guided exercise: develop your first custom command
Module 2Advanced Command Management, Validation, and Interactivity
Creating and managing complex subcommands; Command inheritance; Automatic option validation and error handling; Autocompletion integration (Bash, Zsh, Fish, and CMD/PowerShell shells); Automatic help and documentation generation; Practical workshops: build a multi-level interactive CLI
Module 3Testing, Packaging, Deployment, and Maintenance of a Production CLI
Unit and integration testing for Picocli tools: techniques and recommended frameworks; Packaging and distribution of CLI applications (JAR, native with GraalVM, single executable, wrapper scripts); Configuration and persistence management; Security and robustness of CLI tools; Evolutionary maintenance, community support, and technical monitoring around Picocli; Final hands-on project: build a complete production-ready CLI
Evaluation method
- Quiz to validate learning outcomes at the end of each day
- Practical exercises evaluated throughout the training
- Response to a complete case study on the last day
Learning method
- Interactive sessions and experience sharing
- Step-by-step demonstrations and live coding
- In-depth hands-on exercises on real-world cases
- Support documents, reusable examples, and complementary resources
Methods, materials and delivery
The Training: Developing Java Command-Line Tools with Picocli - The Complete Course 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: Developing Java Command-Line Tools with Picocli - The Complete Course 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: Developing Java Command-Line Tools with Picocli - The Complete Course 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.
Our method
Training quality, guaranteed at every step
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.
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.
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.
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.
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FAQ
Frequently asked questions
How much does the Training: Developing Java Command-Line Tools with Picocli - The Complete Course training cost?+
The price is $3,675 (USD) per participant. A detailed quote is sent within one business day.
How long is the Training: Developing Java Command-Line Tools with Picocli - The Complete Course training?+
The training lasts 3 journées, available live online (US time zones) or on-site at your offices.
How is this training paid for?+
Most US teams pay directly through their company (L&D or training budget). We invoice in US dollars and accept bank transfer (ACH/wire) or card, with volume pricing for teams. A purchase order is welcome.
Are there any prerequisites?+
Fundamental knowledge of Java and basic command-line concepts
Is a certificate delivered at the end?+
Yes. A Learni completion certificate is issued, along with the individual evaluation report.
Does Learni provide the equipment?+
No. A computer and stable internet connection are required for the participant. Learni provides the educational platform, the trainer and all course materials.
On-site & remote
This training across cities
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