calendar project in java with source code

Take note that although Date is represented based on the absolute epoch, the toString() displays the local time, according to the default time zone.

String toString(): returns a date/time string in local time-zone using the default locale in the format: dow mon dd hh:mm:ss zzz yyyy, where dow is the day of week (Sun.

long getTime(): returns the number of milliseconds since epoch.

Most of the methods in Date are deprecated (for lack of internationalization support), except: Take note that epoch is absolute and does not depends on local time zones. Date(long millisSinceEpoch): Allocate a Date instance with the given time.įrom the source code, the no-arg constructor invokes System.currentTimeMillis() to get the milliseconds since January 1, 1970, 00:00:00 GMT (known as 'epoch') and stores in a private variable fastTime.Date(): Allocate a Date instance with the current time.The class represents a specific instance in time, with millisecond precision.

You can further use SimpleDateFormat to control the date/time display format. and ĭate is sufficient if you need only a current timestamp in your application, and you do not need to operate on dates, e.g., one-week later. The documentation is not very clear, and I have to look into the source codes to understand the salient features. There are many Java classes available for date/time and it becomes pretty confusing, in particular, the Date and Calendar clases. Java Programming Language Date and Time - Creation, Operation and Formatting Introduction

Calendar project in java with source code