Java agent class path warning printed from Java 11

Author: jeanbisutti

agent/agent-tooling/src/main/java/com/microsoft/applicationinsights/agent/internal/init/FirstEntryPoint.java

@@ -126,6 +126,8 @@ public void init(EarlyInitAgentConfig earlyConfig) {
       // class path null with a Spring Boot executable JAR
       if (classPath != null
           // JAR name in Maven central, the user could have renamed it
+          && isJavaVersionEqualOrGreaterThan11() // -javaagent content added to the classpath in
+          // Java 1.8
           && classPath.contains("applicationinsights-agent")) {
         startupLogger.warn(
             "The applicationinsights-agent JAR is in the class path. You should remove it because it could lead to unexpected results. You should configure the Java agent with -javaagent. You can also use the runtime attachment with Spring Boot applications.");
@@ -151,6 +153,11 @@ public void init(EarlyInitAgentConfig earlyConfig) {
     }
   }
 
+  private static boolean isJavaVersionEqualOrGreaterThan11() {
+    String javaVersion = System.getProperty("java.vm.specification.version");
+    return !"1.8".equals(javaVersion) && !"9".equals(javaVersion) && !"10".equals(javaVersion);
+  }
+
   private static Map<String, String> findEnvVariables() {
     Map<String, String> env = System.getenv();
     return env.entrySet().stream()