All the core classes in the new API are constructed by fluent factory methods.
When constructing a value by its constituent fields, the factory is called Local Date Time time Point = Local Date Time.now( ); // The current date and time Local Date.of(2012, Month.
Time zones can be referred to by two identifiers: abbreviated, for example, “PLT,” and longer, for example, “Asia/Karachi.” When designing your application, you should consider what scenarios are appropriate for using time zones and when offsets are appropriate.
represents a value such as “3 months and 1 day,” which is a distance on the timeline.
In order to address these problems and provide better support in the JDK core, a new date and time API, which is free of these problems, has been designed for Java SE 8.
The project has been led jointly by the author of Joda-Time (Stephen Colebourne) and Oracle, under JSR 310, and will appear in the new Java SE 8 package Time zones, which disambiguate the contexts of different observers, are put to one side here; you should use these local classes when you don’t need that context.
For more details, you can refer to Java Standard documentation.
The Simple Date Format class has some additional methods, notably parse( ), which tries to parse a string according to the format stored in the given Simple Date Format object.
DAYS)); , which represents a calendaring system and acts as a factory for time points within the calendaring system.The get Instance( ) method of Calendar returns a Gregorian Calendar initialized with the current date and time in the default locale and time zone. These represent the two eras defined by the Gregorian calendar. A long-standing bugbear of Java developers has been the inadequate support for the date and time use cases of ordinary developers.For example, years in start at 1900, months start at 1, and days start at 0—not very intuitive.These issues, and several others, have led to the popularity of third-party date and time libraries, such as Joda-Time.