src/java.base/share/classes/java/nio/charset/Charset.java

*** 279,301 ****
      implements Comparable<Charset>
  {
  
      /* -- Static methods -- */
  
-     private static volatile String bugLevel;
- 
-     static boolean atBugLevel(String bl) {              // package-private
-         String level = bugLevel;
-         if (level == null) {
-             if (!VM.isBooted())
-                 return false;
-             bugLevel = level = GetPropertyAction
-                     .privilegedGetProperty("sun.nio.cs.bugLevel", "");
-         }
-         return level.equals(bl);
-     }
- 
      /**
       * Checks that the given string is a legal charset name. </p>
       *
       * @param  s
       *         A purported charset name
--- 279,288 ----
*** 303,313 ****
       * @throws  IllegalCharsetNameException
       *          If the given name is not a legal charset name
       */
      private static void checkName(String s) {
          int n = s.length();
!         if (n == 0 && !atBugLevel("1.4")) {
              throw new IllegalCharsetNameException(s);
          }
          for (int i = 0; i < n; i++) {
              char c = s.charAt(i);
              if (c >= 'A' && c <= 'Z') continue;
--- 290,300 ----
       * @throws  IllegalCharsetNameException
       *          If the given name is not a legal charset name
       */
      private static void checkName(String s) {
          int n = s.length();
!         if (n == 0) {
              throw new IllegalCharsetNameException(s);
          }
          for (int i = 0; i < n; i++) {
              char c = s.charAt(i);
              if (c >= 'A' && c <= 'Z') continue;