[BEANUTIL-547] MethodUtils java version check fix Java 11

Author: spyrkob

src/main/java/org/apache/commons/beanutils2/MethodUtils.java

@@ -1044,7 +1044,7 @@ private static void setMethodAccessible(final Method method) {
                 boolean vulnerableJVM = false;
                 try {
                     final String specVersion = System.getProperty("java.specification.version");
-                    if (specVersion.charAt(0) == '1' &&
+                    if (specVersion.charAt(0) == '1' && specVersion.charAt(1) == '.' &&
                             (specVersion.charAt(2) == '0' ||
                              specVersion.charAt(2) == '1' ||
                              specVersion.charAt(2) == '2' ||