Given HashMap totals, which is the valid syntax to add an item into the HashMap?

Question $24$ options:

totals.put$(1,98\mathrm{.}89)$;

totals.put$("1",98\mathrm{.}89)$;

totals.add$(1,98\mathrm{.}89)$;

totals.add$("1",98\mathrm{.}89)$;