Working with Dates and Times
Explore how to work with dates and times in Java using the modern java.time API. Understand immutable LocalDate and LocalDateTime classes, format dates for display, and parse date strings accurately. This lesson helps you handle complex time calculations and scheduling reliably.
Handling dates and times is notoriously difficult in programming. Between leap years, varying month lengths, and daylight saving time, tracking now is far more complex than it appears. For many years, Java developers struggled with the java.util.Date and java.util.Calendar classes, which were mutable, confusing, and prone to bugs.
Fortunately, modern Java provides the java.time API a powerful, standard library introduced in Java 8 that makes time handling logical, immutable, and thread-safe. By the end of this lesson, we will be able to manage timelines and schedules confidently, leaving outdated legacy classes behind.
Representing dates with LocalDate
The simplest way to track a specific day is using the LocalDate class. A LocalDate represents a date (year, month, and day) without any time of day or timezone information. It is perfect for tracking concepts like birthdays, holidays, or payroll dates, as well as events that occur on a specific day, regardless of what time it is on the clock. ...