Java engineering onboarding: Object-oriented design, collections and common mistakes

A ready-made course you customise for your organisation, with a live session deck and two surveys. You only add the 7 details that are specific to your organisation.

See the live deck See the full outline

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Length: 45 min
Lessons: 6 lessons
Frequency: In the first weeks of a new Java developer's onboarding
Last reviewed: 21 Oct 2026

Inheritance and interfaces

What would you do?

A Bird class has fly() and a penguin subclass must override it with an error

Try it: this is one of 17 interactive activities in the course.

What's included

Three pieces that work together

Copy once, get everything. Learners prepare on their own, you answer questions live, and the surveys tell you what stuck.

Self-paced course

Short lessons with real workplace scenarios, not walls of text.

6 lessons, about 45 minutes
Sorting activity, scenario, timeline, accordion and quizzes

Live session deck

An AhaSlides presentation to run after the course, in person or online.

10 slides
Quiz, poll, ranking, word cloud slides
A closing slide for your contacts

Two surveys

Find out what landed, and whether people use it on the job.

Post-course feedback, about 2 minutes
30-day check-in
Anonymous by default
Results feed your next refresher

Learning objectives

At the end of this course, learners can

Each objective and the lesson that covers it.

ID	Objective	Source	Where it's covered
TO 334.0	Achieve ≥ 80% on the final assessment	-	Whole course
SO 334.1	Explain classes, objects and encapsulation and apply them to a small design	Best practice	Whole course
SO 334.2	Choose between inheritance, interfaces and composition for a given need	Best practice	Whole course
SO 334.3	Pick the right collection and avoid shared mutable state bugs	Best practice	Whole course
SO 334.4	Predict the output of short snippets and spot common mistakes	SEI CERT Oracle Coding Standard for Java [check before build]	Whole course
SO 334.5	Apply the team's Java conventions and review checklist + your info	Organisation's engineering standards	Whole course

Your part: what a template can't do for you

Your workplace details: fill in the 7 highlighted fields so the course describes your own policies, contacts and locations.
Records: record completion in your own LMS or record system.

Course outline

6 lessons, about 45 minutes

Minutes per lesson are an estimate, shared out by page count.

ContentInteractiveVideoYou customise

A bug from a shared mutable list

3 pages

8 min

Before you beginNoteList

The reportTextImage

What went wrongTimelineQuiz

Classes, objects and encapsulation

3 pages

8 min

TermsAccordion

Public or private?Sorting activityAccount

CheckFlashcardsThisMatching quiz

Inheritance and interfaces

3 pages

8 min

ChoosingTable

RedesignScenarioBirdQuiz

PredictTextQuiz

Collections and streams

3 pages

8 min

Which collection?Sorting activity

The modify-while-looping errorScenarioQuiz

Streams in one sentenceTextMulti-select quiz

Common Java mistakes and review checklist

3 pages

8 min

Frequent slipsChecklist

Raise it earlyProcessKey fact

CheckQuiz

Framework basics and final assessment

2 pages

5 min

What a framework gives youTabsNoteYour infoYour info

PracticeQuizKey factNoteButtonYour info

Live deck and surveys

10 slides to run live, two surveys to close the loop

Pink slides are interactive. Both surveys are anonymous; pink questions are written for this course.

ContentTitle, agenda, "bring a Java snippet you did not understand

PollWhich area of Java do you trust least?

QuizA == b on two separately created Strings with the same text gives… (false ✔ · true · error · null)

ContentEncapsulation, interface or inheritance rule of thumb

RankingRank these Java slips by risk: shared mutable list, == on strings, unused import, unclosed resource, long method

QuizA penguin class must override fly() with an error. Better design? (An interface for flyers ✔)

Word cloudThe Java error message you dread

ScaleHow confident are you reading someone else's Java?

Q&AAsk the trainer anything

Content · customiseClosing {{HELP_CONTACT}}, {{COURSE_URL}}, {{SURVEY_2_URL}}

Post-course feedback: 11 questions, about 2 min

Overall rating 5 stars
Relevant, realistic, right length, helpful activities agree/disagree grid
What was most useful? multi-select
Confidence before this course, and now 1-5 scale
Confidence in classes · inheritance · collections · streams · exceptions grid
How many years have you worked with Java? multiple choice
Which Java concept do you want explained again? short text
I can ask a basic Java question without feeling judged. 1-5 scale
One thing we should change or add open text
Would you recommend this course? NPS

30-day check-in

Have you used what you learned since the course? multiple choice
How confident are you today? Compare with day 1 1-5 scale
Do you know where to find the team Java conventions and review checklist? yes / no / not sure
A moment where the training helped, or where you weren't sure open text
Which topics should the next refresher focus on? ranking

Results show whether people use the training on the job, not just whether they finished it.

Make it yours

7 fields to fill in, and you're ready

Everything else is done. These are the details only your organisation knows; each one is highlighted inside the course.

List of approved tools and versions{{APPROVED_TOOLS}}
Link to the engineering standards or style guide{{ENGINEERING_STANDARDS_LINK}}
Where completion is recorded{{LMS_OR_RECORD_SYSTEM}}
Link to the post-course and 30-day survey{{SURVEY_2_URL}}
Who to ask for help or to report a concern{{HELP_CONTACT}}
Link to the self-paced course{{COURSE_URL}}

Show all 7 fields

Link to the baseline survey{{SURVEY_1_URL}}

FAQ

Common questions

Can I run java engineering onboarding: Object-oriented design, collections and common mistakes training online?

Yes. The course is self-paced and online, and the live deck lets you add a live session in the room or online.

How often is this training needed?

In the first weeks of a new Java developer's onboarding.

Who needs this training?

New Java developers, career changers and developers moving onto a Java codebase; run by engineering managers with L&D.

What records should I keep?

Record completion in your own LMS or record system, so you can show who finished the course and when.

Can I edit the content?

Yes, everything. Change the wording, swap scenarios for ones from your workplace, add your logo, or remove parts that don't apply.

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Last reviewed: 21 October 2026Templates are a starting point, not legal advice.

Ready to run it?

Open the live deck to see how the session runs alongside the course and both surveys.

See the live deck