src/share/javac/com/sun/tools/javadoc/DocLocale.java:
line 168-
--------------------------
            if (!printedLongBreakIteratorWarning) {
                    docenv.warning(doc, "javadoc.BreakIterator_Error_Long_0");
                    docenv.notice("javadoc.BreakIterator_Error_Long_1", oldResult);
                    docenv.notice("javadoc.BreakIterator_Error_Long_2");
                    docenv.notice("javadoc.BreakIterator_Error_Long_3");
                    docenv.notice("javadoc.BreakIterator_Error_Long_4", result);
                    docenv.notice("javadoc.BreakIterator_Error_Long_5");
                    docenv.notice("javadoc.BreakIterator_Error_Long_6");
                    printedLongBreakIteratorWarning = true;
            } else {
                docenv.warning(doc, "javadoc.BreakIterator_Error_Short_0");
                    docenv.notice("javadoc.BreakIterator_Error_Short_1", oldResult);
                    docenv.notice("javadoc.BreakIterator_Error_Short_2");
                    docenv.notice("javadoc.BreakIterator_Error_Short_3", result);
            }
--------------------------

src/share/javac/com/sun/tools/javadoc/resources/javadoc.properties:
line 83-
--------------------------
javadoc.BreakIterator_Error_Long_0=The first sentence is interpreted to be:
javadoc.BreakIterator_Error_Long_1="{0}"
javadoc.BreakIterator_Error_Long_2=This sentence is different from what will be interpreted as the first sentence in the
javadoc.BreakIterator_Error_Long_3=next major release (when that interpretation will be internationalized), which is:
javadoc.BreakIterator_Error_Long_4="{0}"
javadoc.BreakIterator_Error_Long_5=To avoid this note, change the doc comment to make this a proper first sentence, then
javadoc.BreakIterator_Error_Long_6=use -breakiterator from that point forward, which will output this new sentence.
javadoc.BreakIterator_Error_Short_0=The first sentence is interpreted to be:
javadoc.BreakIterator_Error_Short_1="{0}"
javadoc.BreakIterator_Error_Short_2=This sentence is different from what would be generated using -breakiterator: 
javadoc.BreakIterator_Error_Short_3="{0}"
--------------------------

Dividing a text into some parts and extracting only variables
is not correct i18n.  These messages cannot be translated properly,
especially in Asian locales.  The messages should be like:

            if (!printedLongBreakIteratorWarning) {
                    docenv.warning(doc, "javadoc.BreakIterator_Error_Long_0");
                    docenv.notice("javadoc.BreakIterator_Error_Long", oldResult, result);
                    printedLongBreakIteratorWarning = true;
            } else {
                    docenv.warning(doc, "javadoc.BreakIterator_Error_Short_0");
                    docenv.notice("javadoc.BreakIterator_Error_Short", oldResult, result);
            }

and

javadoc.BreakIterator_Error_Long_0=The first sentence is interpreted to be:
javadoc.BreakIterator_Error_Long={0}\nThis sentence is different from what will be interpreted as the first sentence in the\nnext major release (when that interpretation will be internationalized), which is:\n{1}\nTo avoid this note, change the doc comment to make this a proper first sentence, then\nuse -breakiterator from that point forward, which will output this new sentence.
javadoc.BreakIterator_Error_Short_0=The first sentence is interpreted to be:
javadoc.BreakIterator_Error_Short_1={0}\nThis sentence is different from what would be generated using -breakiterator:\n{1}