src/java.base/share/classes/java/lang/StringBuffer.java

*** 146,156 ****
       *
       * @param   str   the initial contents of the buffer.
       */
      @HotSpotIntrinsicCandidate
      public StringBuffer(String str) {
!         super(str);
      }
  
      /**
       * Constructs a string buffer that contains the same characters
       * as the specified {@code CharSequence}. The initial capacity of
--- 146,157 ----
       *
       * @param   str   the initial contents of the buffer.
       */
      @HotSpotIntrinsicCandidate
      public StringBuffer(String str) {
!         super(str.coder(), str.length(), 16);
!         append(str);
      }
  
      /**
       * Constructs a string buffer that contains the same characters
       * as the specified {@code CharSequence}. The initial capacity of
*** 159,169 ****
       *
       * @param      seq   the sequence to copy.
       * @since 1.5
       */
      public StringBuffer(CharSequence seq) {
!         super(seq);
      }
  
      /**
       * Compares two {@code StringBuffer} instances lexicographically. This method
       * follows the same rules for lexicographical comparison as defined in the
--- 160,171 ----
       *
       * @param      seq   the sequence to copy.
       * @since 1.5
       */
      public StringBuffer(CharSequence seq) {
!         super(String.LATIN1, seq.length(), 16);
!         append(seq);
      }
  
      /**
       * Compares two {@code StringBuffer} instances lexicographically. This method
       * follows the same rules for lexicographical comparison as defined in the