Author Archives: Stanislav_Panteleev

Let’s now get the current local time (i.e., your system time zone) with millisecond precision using the Java 8 Date Time API. ✅ Best Way: Use LocalTime.now() + Format with .SSS 🔹 Output: 🔧 Why It Works: Part Description LocalTime.now() … Continue reading →

✅ Use LocalTime.now() or LocalDateTime.now() 🔹 Example with LocalTime: 🔹 Output: ✅ More Common: Use LocalDateTime (includes date too) 🧠 Want to Extract Just the Milliseconds? ⚠️ getNano() returns nanoseconds — we divide by 1,000,000 to get milliseconds. 🔸 Optional: … Continue reading →

✅ Step-by-step Approach Get the first day of the current month Use TemporalAdjusters.dayOfWeekInMonth(2, DayOfWeek.SATURDAY) to find the 2nd Saturday ✅ Full Example: 🔹 Output Example (assuming today is April 15, 2025): 🧠 Tip: If you want the first Monday, third … Continue reading →

✅ Use TemporalAdjusters.next(DayOfWeek.TUESDAY) 🔹 Output Example: 🔸 Bonus: If Today Is Tuesday and You Want the Next One TemporalAdjusters.next() → always moves to the next one, even if today is Tuesday TemporalAdjusters.nextOrSame() → includes today if it’s already Tuesday

🗓️ Java 8’s java.time API makes adding time units to dates super clean and readable using methods like .plusWeeks(), .plusMonths(), .plusYears().

✅ Ways to Get the Current Date 🔹 1. Using LocalDate If you want just the date (without time):

⏰ Let’s talk about ZonedDateTime, the most precise and complete date-time class in Java 8’s java.time package. ✅ What is ZonedDateTime? ZonedDateTime is a class that represents: 📅 Date + 🕒 Time + 🌍 Time Zone 🔹 Example: It contains: … Continue reading →

✅ 1. Intermediate Methods (NOT terminal) These build up the stream pipeline Lazy – they don’t do anything until a terminal method is called Always return a Stream (or IntStream, etc.) 🔹 Examples: These methods transform the stream and are … Continue reading →

LocalDateTime represents a date and time without a time zone — basically a timestamp like: It combines: LocalDate → date (year, month, day) LocalTime → time (hour, minute, second) 🔹 When to Use It Use LocalDateTime when: You need a … Continue reading →

Java 8 brought some powerful new methods to Map that made working with associative arrays (maps) much cleaner, safer, and more expressive. 💡 Let’s go over the most useful ones: ✅ New Map Methods in Java 8 Method Purpose getOrDefault() … Continue reading →