UseFunctionalJGradle

Example of how to use FunctionalJ in a Gradle project.

It basically boils down to adding the required maven repository (hosted by github).

repositories {
    mavenLocal()
    mavenCentral()
}

dependencies {
    implementation      'io.functionalj:functionalj-all:1.0.25'      // Please look up the latest version.
    annotationProcessor 'io.functionalj:functionalj-types:1.0.25'    // Please look up the latest version.
}

See the full code here: build.gradle

Examples

Three small, runnable examples live under src/main/java/use/functionalj/gradle:

Example	Class	Demonstrates
run-choice	TryChoice	@Choice — algebraic/sum types (a Tree of Node/Leaf), plus lazy IntStreamPlus ranges
run-struct	TryStruct	@Struct — immutable data types (Buyer, Order, Item), filtered/grouped with FuncList
run-list	list.TryFuncList	FuncList — functional operations (filter, mapToInt, average) over a plain list

Requirements

• JDK 21 (see .java-version)
• Gradle — or just use the bundled ./gradlew

No local install needed: this repo ships a CodingBooth config (.booth/) that launches a ready-to-go dev environment — JDK 21, Gradle, and both Eclipse and IntelliJ IDEA pre-wired to open this project automatically, no manual import. Run ./booth to start it.

Building and running

With just (already installed in the booth):

just              # list available recipes
just build        # ./gradlew build
just test         # ./gradlew test
just clean        # ./gradlew clean
just run-choice   # run the @Choice example
just run-struct   # run the @Struct example
just run-list     # run the FuncList example

Or drive Gradle directly with ./gradlew build, ./gradlew test, etc.