Upgraded to Gradle 7.0.1

examples/kotlin/build.gradle.kts

@@ -34,26 +34,26 @@ repositories {
 }
 
 application {
-    mainClassName = "com.example.App"
+    mainClass.set("com.example.App")
 }
 
 tasks {
     register("runJava", JavaExec::class) {
         group = "application"
         main = "com.example.JavaApp"
-        classpath = sourceSets["main"].runtimeClasspath
+        classpath = sourceSets.main.get().runtimeClasspath
 
     }
 
     register("runJavaExample", JavaExec::class) {
         group = "application"
         main = "com.example.JavaExample"
-        classpath = sourceSets["main"].runtimeClasspath
+        classpath = sourceSets.main.get().runtimeClasspath
     }
 
     register("runExample", JavaExec::class) {
         group = "application"
         main = "com.example.Example"
-        classpath = sourceSets["main"].runtimeClasspath
+        classpath = sourceSets.main.get().runtimeClasspath
     }
 }

examples/kotlin/gradle/wrapper/gradle-wrapper.properties

@@ -1,5 +1,5 @@
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-7.0-bin.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-7.0.1-bin.zip
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists