32 → Standard Libraries

1LocalDate today = LocalDate.now();2LocalDateTime meeting = LocalDateTime.of(2025, 6, 14, 10, 30);3ZonedDateTime utc = ZonedDateTime.now(ZoneOffset.UTC);4Duration d = Duration.between(start, end);

1BigDecimal price = new BigDecimal("19.99");   // from String, not double!2BigDecimal total = price.multiply(BigDecimal.valueOf(3))3                        .setScale(2, RoundingMode.HALF_UP);