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

*** 1582,1601 ****
       * coders are different and the dstBegin has enough space
       *
       * @param dstBegin  the char index, not offset of byte[]
       * @param coder     the coder of dst[]
       */
!     protected void getBytes(byte dst[], int dstBegin, byte coder) {
          if (this.coder == coder) {
              System.arraycopy(value, 0, dst, dstBegin << coder, count << coder);
          } else {        // this.coder == LATIN && coder == UTF16
              StringLatin1.inflateSB(value, dst, dstBegin, count);
          }
      }
  
      /* for readObject() */
!     protected void initBytes(char[] value, int off, int len) {
          if (String.COMPACT_STRINGS) {
              this.value = StringUTF16.compress(value, off, len);
              if (this.value != null) {
                  this.coder = LATIN1;
                  return;
--- 1582,1601 ----
       * coders are different and the dstBegin has enough space
       *
       * @param dstBegin  the char index, not offset of byte[]
       * @param coder     the coder of dst[]
       */
!     void getBytes(byte dst[], int dstBegin, byte coder) {
          if (this.coder == coder) {
              System.arraycopy(value, 0, dst, dstBegin << coder, count << coder);
          } else {        // this.coder == LATIN && coder == UTF16
              StringLatin1.inflateSB(value, dst, dstBegin, count);
          }
      }
  
      /* for readObject() */
!     void initBytes(char[] value, int off, int len) {
          if (String.COMPACT_STRINGS) {
              this.value = StringUTF16.compress(value, off, len);
              if (this.value != null) {
                  this.coder = LATIN1;
                  return;