code: public static boolean isPostJDK5(String bytecodeVersion) {
          return JDK5.equals(bytecodeVersion)
              || JDK6.equals(bytecodeVersion)
              || JDK7.equals(bytecodeVersion)
              || JDK8.equals(bytecodeVersion);
      }
docs: Checks if the specified bytecode version string represents a JDK 1.5+ compatible
  bytecode version.
  @param bytecodeVersion the bytecode version string (1.4, 1.5, 1.6, 1.7 or 1.8)
  @return true if the bytecode version is JDK 1.5+