src/java.base/share/classes/sun/invoke/util/BytecodeName.java

rev 52979 : 8215281: Use String.isEmpty() when applicable in java.base
Reviewed-by: TBD

*** 449,459 ****
       * characters are legal in some (or all) names in class files.
       * @param s the proposed bytecode name
       * @return true if the name is non-empty and all of its characters are safe
       */
      public static boolean isSafeBytecodeName(String s) {
!         if (s.length() == 0)  return false;
          // check occurrences of each DANGEROUS char
          for (char xc : DANGEROUS_CHARS_A) {
              if (xc == ESCAPE_C)  continue;  // not really that dangerous
              if (s.indexOf(xc) >= 0)  return false;
          }
--- 449,459 ----
       * characters are legal in some (or all) names in class files.
       * @param s the proposed bytecode name
       * @return true if the name is non-empty and all of its characters are safe
       */
      public static boolean isSafeBytecodeName(String s) {
!         if (s.isEmpty())  return false;
          // check occurrences of each DANGEROUS char
          for (char xc : DANGEROUS_CHARS_A) {
              if (xc == ESCAPE_C)  continue;  // not really that dangerous
              if (s.indexOf(xc) >= 0)  return false;
          }
*** 474,484 ****
      private static boolean looksMangled(String s) {
          return s.charAt(0) == ESCAPE_C;
      }
  
      private static String mangle(String s) {
!         if (s.length() == 0)
              return NULL_ESCAPE;
  
          // build this lazily, when we first need an escape:
          StringBuilder sb = null;
  
--- 474,484 ----
      private static boolean looksMangled(String s) {
          return s.charAt(0) == ESCAPE_C;
      }
  
      private static String mangle(String s) {
!         if (s.isEmpty())
              return NULL_ESCAPE;
  
          // build this lazily, when we first need an escape:
          StringBuilder sb = null;