Fix Gradle build for Java chaincode (#583)

Author: OsamaRab3

samples/chaincodes/chaincode-java-simple/build.gradle

@@ -6,9 +6,10 @@ plugins {
     id 'java'
 }
 
-version '0.0.1'
+version = '0.0.1'
 
-sourceCompatibility = 1.8
+sourceCompatibility = JavaVersion.VERSION_1_8
+targetCompatibility = JavaVersion.VERSION_1_8
 
 repositories {
     mavenLocal()
@@ -22,17 +23,17 @@ repositories {
 }
 
 dependencies {
-    implementation group: 'org.hyperledger.fabric-chaincode-java', name: 'fabric-chaincode-shim', version: '2.3.0'
+    implementation group: 'org.hyperledger.fabric-chaincode-java', name: 'fabric-chaincode-shim', version: '2.5.0'
     implementation group: 'org.json', name: 'json', version: '20180813'
     testImplementation 'org.junit.jupiter:junit-jupiter:5.4.2'
     testImplementation 'org.assertj:assertj-core:3.11.1'
     testImplementation 'org.mockito:mockito-core:2.+'
 }
 
 shadowJar {
-    baseName = 'chaincode'
-    version = null
-    classifier = null
+    archiveBaseName.set('chaincode')
+    archiveVersion.set('')
+    archiveClassifier.set('')
 
     manifest {
         attributes 'Main-Class': 'org.hyperledger.fabric.contract.ContractRouter'
@@ -46,7 +47,6 @@ test {
     }
 }
 
-
 tasks.withType(JavaCompile) {
-  options.compilerArgs << "-Xlint:unchecked" << "-Xlint:deprecation" << "-parameters"
+    options.compilerArgs += ["-Xlint:unchecked", "-Xlint:deprecation", "-parameters"]
 }

samples/chaincodes/chaincode-java-simple/gradle/wrapper/gradle-wrapper.jar

@@ -1,5 +1,6 @@
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-7.0.2-bin.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-8.4-bin.zip
+networkTimeout=30000
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists