01 · Java
Install Java and run the first program
Compile a Java file and run the resulting program.
← Projects
Data flow
Java · Application
PDF Batch Studio
Transfer CSV data into PDF forms reproducibly.
Release availableThe public release is v0.1.0. The current source explained here includes further development. Check the release description for the scope of the downloads.
Architecture and data flow
- Shared Java core
- PDF/CSV adapters
- JavaFX with SQLite or Spring Boot with PostgreSQL
Desktop and server use the same processing workflow. A background job has explicit states and bounded resources.
Code and evidence
Pinned source links show the implementation and existing test files. Startup commands and documented verification boundaries are in the README at the same version. This website audit is not a fresh CI run of every project.
- pdf-batch-studio · JobApplicationService.java
- pdf-batch-studio · BatchJob.java
- pdf-batch-studio · CsvInspection.java
- pdf-batch-studio · BatchJobTest.java
- pdf-batch-studio · JobConfigurationValidatorTest.java
- README · 9b85992b
Licence: Apache-2.0 · Source checked on 12.10.2026
Learn through tutorials
02 · Java
Variables and data types in Java
Distinguish primitive values, text and missing references.
03 · Java
Operators and conditions
Check numbers and text using appropriate comparisons.
04 · Java
Loops and controlled repetition
Process a sequence of values using one shared rule.
05 · Java
Methods, parameters and results
Separate a calculation from its output.
06 · Java
Arrays, lists, sets and maps
Choose a collection for ordering, uniqueness or lookup.
07 · Java
Classes and constructors
Create a custom data type with controlled initial values.
08 · Java
Interfaces and composition
Define a contract and replace its implementation.
09 · Java
Exceptions and safe file access
Handle a failure and close a file even when work stops.
10 · Java
Maven, modules and ports/adapters
Understand a Java build and dependency direction.
11 · Java
Read CSV and fill PDF forms
Read structured CSV fields and set an AcroForm value using PDFBox.
12 · Java
JDBC, SQLite and local transactions
Store a record through JDBC and understand a migration’s responsibility.
13 · Java
Spring Boot REST with validation
Receive JSON, validate input and return an appropriate HTTP status.
14 · Java
Understand PostgreSQL, JPA and Flyway
Distinguish database schema, object mapping and transaction boundaries.
15 · Java
JUnit, semantic PDF tests and Testcontainers
Verify the contents of a real PDF and choose tests according to the guarantee being demonstrated.
16 · Java
Offline PDF workflow with JavaFX and SQLite
Follow template, mapping, preview, background jobs and local project persistence through a real desktop app.
17 · Java
Spring Boot batch workflow with uploads and Docker
Follow a stored upload through configuration, processing, download and cleanup.