01
Java setup, syntax and types
Explain and apply JDK, JVM, source/bytecode, primitives, references, records, BigDecimal to a tested, privacy-safe solution.
- Java setup, syntax and types60 min
← Course catalogue
SWE-210Intermediate
Software development
Java Application Development
Develop tested object-oriented Java applications from requirements to packaged delivery.
Part of these pathways
Course outline: enrolment opens after THNF content and assessment review.
What you will be able to do
Clear outcomes. Practical evidence.
- Use Java types and collections
- Apply object-oriented design
- Handle errors and files
- Test and package an application
Course structure
Modules and lessons
02
Control flow and methods
Explain and apply conditions, switch, loops, parameters, return, overloading to a tested, privacy-safe solution.
- Control flow and methods60 min
03
Collections, exceptions and debugging
Explain and apply List/Set/Map, generics, checked/unchecked exceptions, debugger to a tested, privacy-safe solution.
- Collections, exceptions and debugging60 min
04
Classes, objects and encapsulation
Explain and apply constructors, invariants, access modifiers, immutability, records to a tested, privacy-safe solution.
- Classes, objects and encapsulation60 min
05
Inheritance, interfaces and polymorphism
Explain and apply interface contract, substitution, composition, sealed types to a tested, privacy-safe solution.
- Inheritance, interfaces and polymorphism60 min
06
SOLID and layered design
Explain and apply SRP, OCP, LSP, ISP, DIP, domain/service/repository layers to a tested, privacy-safe solution.
- SOLID and layered design60 min
07
Generics, streams and files
Explain and apply generic types, stream pipeline, Optional, Path/Files, CSV to a tested, privacy-safe solution.
- Generics, streams and files60 min
08
JDBC and relational persistence
Explain and apply DataSource, PreparedStatement, ResultSet, transaction, DAO/repository to a tested, privacy-safe solution.
- JDBC and relational persistence60 min
09
Maven or Gradle and JUnit
Explain and apply standard layout, lifecycle, dependencies, JUnit 5, parameterised tests to a tested, privacy-safe solution.
- Maven or Gradle and JUnit60 min
10
REST services and Spring foundations
Explain and apply controller, service, repository, DTO, validation, HTTP status, exception handler to a tested, privacy-safe solution.
- REST services and Spring foundations60 min
11
Capstone sprint
Explain and apply backlog, vertical slice, review, CI, definition of done to a tested, privacy-safe solution.
- Capstone sprint60 min
12
Release and demonstration
Explain and apply versioning, packaging, configuration, README, demo, retrospective to a tested, privacy-safe solution.
- Release and demonstration60 min
Access and progression
Know what the course requires.
The required capability matters; the learner does not have to personally own every device.
Who it is for
Aspiring developers, technical learners, career changers and practitioners seeking applied computing skills.
Hardware access
Personal 64-bit computer with 4 GB RAM and 20 GB free, or use the required device and software at a readiness-approved THNF centre.
Software and practical access
Course software is available through the text-first pack, an approved offline installer or a readiness-approved THNF centre.
Possible progression
Junior development, data, web, application-support or technical-project progression appropriate to the completed portfolio.
Progression is not a guarantee of employment or external certification.Sierra Leone context
Mobile-first, low-data solutions for Sierra Leonean schools, traders, transport, agriculture, NGOs and SMEs using synthetic local names, districts and NLe values.
Skills in context
Career directions and next steps
These are realistic directions that the skills can support—not promises of employment, job titles or external certification.
- Junior software developer
- Application-support assistant
- Software-testing assistant
Possible progression pathways
Programming and software engineering