use Gradlew (#467)

* gradlew added

* use gradlew in ci

* docs(readme): switch remaining gradle commands to wrapper

Agent-Logs-Url: https://github.com/eclipse-zenoh/zenoh-java/sessions/8a1e11ab-5586-45f6-93c6-d6225c551eb5

Co-authored-by: milyin <1909657+milyin@users.noreply.github.com>

---------

Co-authored-by: copilot-swe-agent[bot] <198982749+Copilot@users.noreply.github.com>

Author: milyin

.github/workflows/ci.yml

@@ -55,11 +55,9 @@ jobs:
 
       - name: Setup Gradle
         uses: gradle/actions/setup-gradle@v4
-        with:
-          gradle-version: 8.12.1
 
       - name: Gradle Test
-        run: gradle jvmTest --info
+        run: ./gradlew jvmTest --info
 
   markdown_lint:
     runs-on: ubuntu-latest

.github/workflows/publish-android.yml

@@ -58,12 +58,6 @@ jobs:
 
       - name: Setup Gradle
         uses: gradle/actions/setup-gradle@v4
-        with:
-          gradle-version: 8.12.1
-
-      - name: Gradle Wrapper
-        run: |
-          gradle wrapper
 
       - name: Set pub mode env var
         # Note: This step is intended to allow publishing snapshot packages.

.github/workflows/publish-dokka.yml

@@ -27,15 +27,9 @@ jobs:
 
       - name: Setup Gradle
         uses: gradle/actions/setup-gradle@v4
-        with:
-          gradle-version: 8.12.1
-
-      - name: Gradle Wrapper
-        run: |
-          gradle wrapper
 
       - name: Build doc
-        run: gradle dokkaGenerate
+        run: ./gradlew dokkaGenerate
 
       - name: Deploy doc
         if: ${{ inputs.live-run || false }}

.github/workflows/publish-jvm.yml

@@ -163,12 +163,6 @@ jobs:
 
       - name: Setup Gradle
         uses: gradle/actions/setup-gradle@v4
-        with:
-          gradle-version: 8.12.1
-
-      - name: Gradle Wrapper
-        run: |
-          gradle wrapper
 
       - name: Set pub mode env var
         # Note: This step is intended to allow publishing snapshot packages.

README.md

@@ -114,18 +114,23 @@ Basically:
 
 - Rust ([Installation guide](https://doc.rust-lang.org/cargo/getting-started/installation.html))
 - Kotlin ([Installation guide](https://kotlinlang.org/docs/getting-started.html#backend))
-- Gradle ([Installation guide](https://gradle.org/install/))
 
 and in case of targeting Android you'll also need:
 
 - Android SDK ([Installation guide](https://developer.android.com/about/versions/11/setup-sdk))
 
+## Gradle wrapper
+
+This repository ships a [Gradle wrapper](https://docs.gradle.org/current/userguide/gradle_wrapper.html) (`./gradlew` / `gradlew.bat`), so no system-wide Gradle installation is required. The wrapper pins the build to **Gradle 8.12.1** and verifies the distribution checksum before use, ensuring a reproducible and tamper-evident build environment.
+
+Use `./gradlew` on Unix/macOS/Linux (or `gradlew.bat` on Windows) in place of `gradle` for all commands listed below.
+
 ## <img src="jvm.png" alt="JVM" height="50"> JVM
 
 To publish a library for a JVM project into Maven local, run
 
 ```bash
-gradle publishJvmPublicationToMavenLocal
+./gradlew publishJvmPublicationToMavenLocal
 ```
 
 This will first, trigger the compilation of Zenoh-JNI in release, and second publish the library into maven local, containing the native library
@@ -180,7 +185,7 @@ to install them.
 So, in order to publish the library onto Maven Local, run:
 
 ```bash
-gradle -Pandroid=true publishAndroidReleasePublicationToMavenLocal
+./gradlew -Pandroid=true publishAndroidReleasePublicationToMavenLocal
 ```
 
 This will first trigger the compilation of the Zenoh-JNI for the previously mentioned targets, and secondly will
@@ -215,15 +220,15 @@ Because it's a Kotlin project, we use [Dokka](https://kotlinlang.org/docs/dokka-
 In order to build it, run:
 
 ```bash
-gradle dokkaGenerate
+./gradlew dokkaGenerate
 ```
 
 ## Running the tests
 
 To run the tests, run:
 
 ```bash
-gradle jvmTest
+./gradlew jvmTest
 ```
 
 This will compile the native library on debug mode (if not already available) and run the tests afterward against the JVM target.
@@ -235,7 +240,7 @@ Rust logs are propagated when setting the `RUST_LOG` environment variable.
 For instance running the ZPub test as follows:
 
 ```bash
-RUST_LOG=debug gradle ZPub
+RUST_LOG=debug ./gradlew ZPub
 ```
 
 causes the logs to appear in standard output.

gradle/wrapper/gradle-wrapper.jar

@@ -0,0 +1,8 @@
+distributionBase=GRADLE_USER_HOME
+distributionPath=wrapper/dists
+distributionUrl=https\://services.gradle.org/distributions/gradle-8.12.1-bin.zip
+distributionSha256Sum=8d97a97984f6cbd2b85fe4c60a743440a347544bf18818048e611f5288d46c94
+networkTimeout=10000
+validateDistributionUrl=true
+zipStoreBase=GRADLE_USER_HOME
+zipStorePath=wrapper/dists