Here are a few alternatives, depending on what you need:
LocalDate.now().atTime(23, 59, 59); //23:59:59
LocalDate.now().atTime(LocalTime.MAX); //23:59:59.999999999
But there is no built-in method.
As commented by @JBNizet, if you want to create an interval, you can also use an interval up to midnight, exclusive.
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