Support Java 25

- Update Gradle to 9.1.0.
- Update shadow plugin to 9.2.2.
- Requires a minimum of Java 17 to run Gradle.
- Chaincode and applications still target Java 11.

Signed-off-by: Mark S. Lewis <Mark.S.Lewis@outlook.com>

Author: bestbeforetoday

.github/actions/test-network-setup/action.yaml

@@ -9,7 +9,7 @@ inputs:
     default: 20.x
   java-version:
     description: Version of JDK
-    default: 11.x
+    default: 25.x
   fabric-version:
     description: Version of Hyperledger Fabric
     default: 2.5.13

.github/workflows/lint.yaml

@@ -18,7 +18,7 @@ concurrency:
 env:
   GO_VER: "1.23"
   NODE_VER: 20.x
-  JAVA_VER: 11.x
+  JAVA_VER: 25.x
 
 jobs:
   go:

asset-transfer-basic/application-gateway-java/gradle/wrapper/gradle-wrapper.jar

@@ -1,6 +1,6 @@
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-8.11.1-bin.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-9.1.0-bin.zip
 networkTimeout=10000
 validateDistributionUrl=true
 zipStoreBase=GRADLE_USER_HOME

asset-transfer-basic/application-gateway-java/gradle/wrapper/gradle-wrapper.properties

@@ -3,7 +3,7 @@
  */
 
 plugins {
-    id 'com.gradleup.shadow' version '8.3.5'
+    id 'com.gradleup.shadow' version '9.2.2'
     id 'application'
     id 'checkstyle'
     id 'jacoco'
@@ -13,13 +13,14 @@ group 'org.hyperledger.fabric.samples'
 version '1.0-SNAPSHOT'
 
 dependencies {
-
     implementation 'org.hyperledger.fabric-chaincode-java:fabric-chaincode-shim:2.5.+'
     implementation 'org.json:json:+'
     implementation 'com.owlike:genson:1.6'
-    testImplementation 'org.junit.jupiter:junit-jupiter:5.10.2'
-    testImplementation 'org.assertj:assertj-core:3.25.3'
-    testImplementation 'org.mockito:mockito-core:5.12.0'
+    testImplementation platform('org.junit:junit-bom:5.14.0')
+    testImplementation 'org.junit.jupiter:junit-jupiter'
+    testImplementation 'org.assertj:assertj-core:3.27.6'
+    testImplementation 'org.mockito:mockito-core:5.20.0'
+    testRuntimeOnly 'org.junit.platform:junit-platform-launcher'
 }
 
 repositories {
@@ -75,12 +76,12 @@ test {
     }
 }
 
-mainClassName = 'org.hyperledger.fabric.contract.ContractRouter'
-
 shadowJar {
     archiveBaseName = 'chaincode'
     archiveVersion = ''
     archiveClassifier = ''
+
+    duplicatesStrategy = DuplicatesStrategy.INCLUDE
     mergeServiceFiles()
 
     manifest {

asset-transfer-basic/application-gateway-java/gradlew

@@ -1,6 +1,6 @@
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-8.11.1-bin.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-9.1.0-bin.zip
 networkTimeout=10000
 validateDistributionUrl=true
 zipStoreBase=GRADLE_USER_HOME