code: private static ClassLoader getPlatformClassLoader() {
          if (JavaInfo.majorVersion() >= 9) {
              return AccessController.doPrivileged(new PrivilegedAction<ClassLoader>() {
                  @Override
                  public ClassLoader run() {
                      ClassLoader pcl = null;
                      try {
                          Method getPlatformClassLoader = ClassLoader.class.getMethod("getPlatformClassLoader");
                          pcl = (ClassLoader) getPlatformClassLoader.invoke(null);
                      } catch (Throwable t) {
                          // Log an FFDC.
                      }
                      return pcl;
                  }
              });
          }
          return null;
      }
docs: Returns the PlatformClassloader when running with java 9 and above; otherwise returns null.