Fix deprecation warning in build script.

Author: jenetics

build.gradle.kts

@@ -68,9 +68,9 @@ gradle.projectsEvaluated {
 		}
 
 		plugins.withType<JavaPlugin> {
-			configure<JavaPluginConvention> {
+			configure<JavaPluginExtension> {
 				sourceCompatibility = JavaVersion.VERSION_11
-				targetCompatibility = JavaVersion.current()
+				targetCompatibility = JavaVersion.VERSION_11
 			}
 
 			configure<JavaPluginExtension> {
@@ -138,9 +138,9 @@ fun setupTestReporting(project: Project) {
 			dependsOn("test")
 
 			reports {
-				html.isEnabled = true
-				xml.isEnabled = true
-				csv.isEnabled = true
+				html.required.set(true)
+				xml.required.set(true)
+				csv.required.set(true)
 			}
 		}
 
@@ -200,7 +200,7 @@ fun setupJavadoc(project: Project) {
 		project.tasks.register("java2html") {
 			doLast {
 				project.javaexec {
-					main = "de.java2html.Java2Html"
+					mainClass.set("de.java2html.Java2Html")
 					args = listOf(
 						"-srcdir", "src/main/java",
 						"-targetdir", "${javadoc.destinationDir}/src-html/${project.extra["moduleName"]}"

settings.gradle.kts

@@ -26,7 +26,6 @@
 pluginManagement {
 	repositories {
 		mavenLocal()
-		jcenter()
 		gradlePluginPortal()
 	}
 }