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

@@ -1582,20 +1582,20 @@
      * 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) {
+    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) {
+    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;