The document discusses Java 8's new date and time API (JSR 310). It provides examples of using the new classes like LocalDate, LocalTime, LocalDateTime and Instant that model dates, times and timestamps without time zones. It also covers formatting and parsing dates and times, working with time zones using ZoneId and ZonedDateTime, durations using Duration, and periods of time using Period. The document compares the new API to the legacy Date and Calendar classes and notes improvements like immutability and removal of bugs in the previous implementation.
This presentation provides an overview of using the Java SE 8 Date & Time API. It covers how to:
1. Create and manage date-based and time-based events including a combination of date and time into a single object using LocalDate, LocalTime, LocalDateTime, Instant, Period, and Duration
2. Work with dates and times across timezones and manage changes resulting from daylight savings including format date and times values
3. Define and create and manage date-based and time-based events using Instant, Period, Duration, and TemporalUnit
A code along session to introduce the java.time library in the upcoming release of Java 8. The materials to code along can be cloned from github here: https://github.com/jpgough/JavaTimeLab
A presentation I did in IL Java User Group about Java 8, DateTime new features. JSR-310
I wanted it to be informative and a good resource and starting point for this cool feature.
This presentation provides an overview of using the Java SE 8 Date & Time API. It covers how to:
1. Create and manage date-based and time-based events including a combination of date and time into a single object using LocalDate, LocalTime, LocalDateTime, Instant, Period, and Duration
2. Work with dates and times across timezones and manage changes resulting from daylight savings including format date and times values
3. Define and create and manage date-based and time-based events using Instant, Period, Duration, and TemporalUnit
A code along session to introduce the java.time library in the upcoming release of Java 8. The materials to code along can be cloned from github here: https://github.com/jpgough/JavaTimeLab
A presentation I did in IL Java User Group about Java 8, DateTime new features. JSR-310
I wanted it to be informative and a good resource and starting point for this cool feature.
Scala like distributed collections - dumping time-series data with apache sparkDemi Ben-Ari
Â
Spark RDDs are almost identical to Scala collection, just in a distributed manner, all of the transformations and actions are derived from the Scala collections API.
As Martin Odersky mentioned, âSpark - The Ultimate Scala Collectionsâ is the right way to look at RDDs. But with that great distributed power comes a great many data problems: at first youâll start tackling the concept of partitioning, then the actual data becomes the next thing to worry about.
In the talk weâll go through an overview on Spark's architecture, and see how similar RDDs are to the Scala collections API. We'll then shift to the world of problems that youâll be facing when using Spark for processing a vast volume of time-series data with multiple data stores (S3, MongoDB, Apache Cassandra, MySQL).
When you start tackling many scale and performance problems, many questions arise:
> How to handle missing data?
> Should the system handle both serving and backend processes, or should we separate them out?
> Which solution is cheaper?
> How do we get the best performance for money spent?
In the talk we will tell the tale of all of the transformations weâve made to our data and review the multiple data persistency layers... and Iâll try my best NOT to answer the question âwhich persistency layer is the best?â but I do promise to share our pains and lessons learned!
Il tempo vola: rappresentare e manipolare sequenze di eventi e time series co...Codemotion
Â
Rappresentare lo scorrere del tempo non è un'impresa semplice, specialmente con strumenti "tradizionali". Purtroppo però la dimensione temporale è fondamentale in mille contesti diversi, dall'analisi statistica alla rappresentazione dei rapporti di causa-effetto, dal forecasting al controllo automatico. In questo talk vedremo come utilizzare al meglio OrientDB, un Document-Graph Database, per il salvataggio, l'elaborazione e l'interrogazione di questo tipo di informazioni.
Akka-demy (a.k.a. How to build stateful distributed systems) I/IIPeter Csala
Â
This is the first part of a mini-series where we discuss how to build distributed stateful real-time applications using actor model and messaging.
The second part: https://www.slideshare.net/PeterCsala/akkademy-aka-how-to-build-stateful-distributed-systems-iiii
A distributed system is a network that consists of autonomous computers that are connected using a distribution middleware. They help in sharing different resources and capabilities to provide users with a single and integrated coherent network.
Libraries and History
The âoldâ Date/Calendar classes
The new (âĽJava8) java.time package
Basic concepts
Main classes
Date operations
Dealing with SQL dates
Teaching material for the course of "Tecniche di Programmazione" at Politecnico di Torino in year 2014/2015. More information: http://bit.ly/tecn-progr
These slides explores php date and time library. You will find, what is UNIX time stamp, how to use php's date functions. A beginner introduction by programmer blog
Please I am posting the fifth time and hoping to get this r.pdfankit11134
Â
"Please I am posting the fifth time and hoping to get this resolved. I want the year to
change from 2014 to 2015 but the days of the month change to 32 rather than 1/1/2015.
Also, Please I want personal information in the heading as well Name: Last: and Course
Name:"
Modify the Time class(attached) to be able to work with Date class. The Time object should
always
remain in a consistent state.
Modify the Date class(attached) to include a Time class object as a composition, a tick member
function that increments the time stored in a Date object by one second, and increaseADay
function to
increase day, month and year when it is proper. Please use CISP400V10A4.cpp that tests the tick
member function in a loop that prints the time in standard format during iteration of the loop to
illustrate that the tick member function works correctly. Be aware that we are testing the following
cases:
a) Incrementing into the next minute.
b) Incrementing into the next hour.
c) Incrementing into the next day (i.e., 11:59:59 PM to 12:00:00 AM).
d) Incrementing into the next month and next year.
Time class
The Time class has three private integer data members, hour (0 - 23 (24-hour clock format)),
minute (0
59), and second (0 59).
It also has Time, setTime, setHour, setMinute, setSecond, getHour(), getMinute,
getSecond,~Time,
printUniversal, and printStandard public functions.
1. The Time function is a default constructor. It takes three integers and they all have 0 as default
values. It also displays "Time object constructor is called." message and calls
printStandard
and printUniversal functions.
2. The setTime function takes three integers but does not return any value. It initializes the
private data members (hour, minute and second) data.
3. The setHour function takes one integer but doesnt return anything. It validates and stores the
integer to the hour private data member.
4. The setMinute function takes one integer but doesnt return anything. It validates and stores
the integer to the minute private data member.
5. The setSecond function takes one integer but doesnt return anything. It validates and stores
the integer to the second private data member.
Page 3 of 11 CISP400V10A4
6. The getHour constant function returns one integer but doesnt take anything. It returns the
private data member hours data.
7. The getMinute constant function returns one integer but doesnt take anything. It returns the
private data member minutes data.
8. The getSecond constant function returns one integer but doesnt take anything. It returns the
private data member seconds data.
9. The Time destructor does not take anything. It displays "Time object destructor is
called."
message and calls printStandard and printUniversal functions.
10. The printUniversal constant function does not return or accept anything. It displays time in
universal-time format.
11. The printStandard constant function does not return or accept anything. It displays time in
standard-time f.
C++ Please I am posting the fifth time and hoping to get th.pdfjaipur2
Â
C++
"Please I am posting the fifth time and hoping to get this resolved. I want the year to
change from 2014 to 2015 but the days of the month change to 32 rather than 1/1/2015.
Also, Please I want personal information in the heading as well Name: Last: and Course
Name:"
Modify the Time class(attached) to be able to work with Date class. The Time object should
always
remain in a consistent state.
Modify the Date class(attached) to include a Time class object as a composition, a tick member
function that increments the time stored in a Date object by one second, and increaseADay
function to
increase day, month and year when it is proper. Please use CISP400V10A4.cpp that tests the tick
member function in a loop that prints the time in standard format during iteration of the loop to
illustrate that the tick member function works correctly. Be aware that we are testing the following
cases:
a) Incrementing into the next minute.
b) Incrementing into the next hour.
c) Incrementing into the next day (i.e., 11:59:59 PM to 12:00:00 AM).
d) Incrementing into the next month and next year.
Time class
The Time class has three private integer data members, hour (0 - 23 (24-hour clock format)),
minute (0
59), and second (0 59).
It also has Time, setTime, setHour, setMinute, setSecond, getHour(), getMinute,
getSecond,~Time,
printUniversal, and printStandard public functions.
1. The Time function is a default constructor. It takes three integers and they all have 0 as default
values. It also displays "Time object constructor is called." message and calls
printStandard
and printUniversal functions.
2. The setTime function takes three integers but does not return any value. It initializes the
private data members (hour, minute and second) data.
3. The setHour function takes one integer but doesnt return anything. It validates and stores the
integer to the hour private data member.
4. The setMinute function takes one integer but doesnt return anything. It validates and stores
the integer to the minute private data member.
5. The setSecond function takes one integer but doesnt return anything. It validates and stores
the integer to the second private data member.
Page 3 of 11 CISP400V10A4
6. The getHour constant function returns one integer but doesnt take anything. It returns the
private data member hours data.
7. The getMinute constant function returns one integer but doesnt take anything. It returns the
private data member minutes data.
8. The getSecond constant function returns one integer but doesnt take anything. It returns the
private data member seconds data.
9. The Time destructor does not take anything. It displays "Time object destructor is
called."
message and calls printStandard and printUniversal functions.
10. The printUniversal constant function does not return or accept anything. It displays time in
universal-time format.
11. The printStandard constant function does not return or accept anything. It displays time in
standard-ti.
Scala like distributed collections - dumping time-series data with apache sparkDemi Ben-Ari
Â
Spark RDDs are almost identical to Scala collection, just in a distributed manner, all of the transformations and actions are derived from the Scala collections API.
As Martin Odersky mentioned, âSpark - The Ultimate Scala Collectionsâ is the right way to look at RDDs. But with that great distributed power comes a great many data problems: at first youâll start tackling the concept of partitioning, then the actual data becomes the next thing to worry about.
In the talk weâll go through an overview on Spark's architecture, and see how similar RDDs are to the Scala collections API. We'll then shift to the world of problems that youâll be facing when using Spark for processing a vast volume of time-series data with multiple data stores (S3, MongoDB, Apache Cassandra, MySQL).
When you start tackling many scale and performance problems, many questions arise:
> How to handle missing data?
> Should the system handle both serving and backend processes, or should we separate them out?
> Which solution is cheaper?
> How do we get the best performance for money spent?
In the talk we will tell the tale of all of the transformations weâve made to our data and review the multiple data persistency layers... and Iâll try my best NOT to answer the question âwhich persistency layer is the best?â but I do promise to share our pains and lessons learned!
Il tempo vola: rappresentare e manipolare sequenze di eventi e time series co...Codemotion
Â
Rappresentare lo scorrere del tempo non è un'impresa semplice, specialmente con strumenti "tradizionali". Purtroppo però la dimensione temporale è fondamentale in mille contesti diversi, dall'analisi statistica alla rappresentazione dei rapporti di causa-effetto, dal forecasting al controllo automatico. In questo talk vedremo come utilizzare al meglio OrientDB, un Document-Graph Database, per il salvataggio, l'elaborazione e l'interrogazione di questo tipo di informazioni.
Akka-demy (a.k.a. How to build stateful distributed systems) I/IIPeter Csala
Â
This is the first part of a mini-series where we discuss how to build distributed stateful real-time applications using actor model and messaging.
The second part: https://www.slideshare.net/PeterCsala/akkademy-aka-how-to-build-stateful-distributed-systems-iiii
A distributed system is a network that consists of autonomous computers that are connected using a distribution middleware. They help in sharing different resources and capabilities to provide users with a single and integrated coherent network.
Libraries and History
The âoldâ Date/Calendar classes
The new (âĽJava8) java.time package
Basic concepts
Main classes
Date operations
Dealing with SQL dates
Teaching material for the course of "Tecniche di Programmazione" at Politecnico di Torino in year 2014/2015. More information: http://bit.ly/tecn-progr
These slides explores php date and time library. You will find, what is UNIX time stamp, how to use php's date functions. A beginner introduction by programmer blog
Please I am posting the fifth time and hoping to get this r.pdfankit11134
Â
"Please I am posting the fifth time and hoping to get this resolved. I want the year to
change from 2014 to 2015 but the days of the month change to 32 rather than 1/1/2015.
Also, Please I want personal information in the heading as well Name: Last: and Course
Name:"
Modify the Time class(attached) to be able to work with Date class. The Time object should
always
remain in a consistent state.
Modify the Date class(attached) to include a Time class object as a composition, a tick member
function that increments the time stored in a Date object by one second, and increaseADay
function to
increase day, month and year when it is proper. Please use CISP400V10A4.cpp that tests the tick
member function in a loop that prints the time in standard format during iteration of the loop to
illustrate that the tick member function works correctly. Be aware that we are testing the following
cases:
a) Incrementing into the next minute.
b) Incrementing into the next hour.
c) Incrementing into the next day (i.e., 11:59:59 PM to 12:00:00 AM).
d) Incrementing into the next month and next year.
Time class
The Time class has three private integer data members, hour (0 - 23 (24-hour clock format)),
minute (0
59), and second (0 59).
It also has Time, setTime, setHour, setMinute, setSecond, getHour(), getMinute,
getSecond,~Time,
printUniversal, and printStandard public functions.
1. The Time function is a default constructor. It takes three integers and they all have 0 as default
values. It also displays "Time object constructor is called." message and calls
printStandard
and printUniversal functions.
2. The setTime function takes three integers but does not return any value. It initializes the
private data members (hour, minute and second) data.
3. The setHour function takes one integer but doesnt return anything. It validates and stores the
integer to the hour private data member.
4. The setMinute function takes one integer but doesnt return anything. It validates and stores
the integer to the minute private data member.
5. The setSecond function takes one integer but doesnt return anything. It validates and stores
the integer to the second private data member.
Page 3 of 11 CISP400V10A4
6. The getHour constant function returns one integer but doesnt take anything. It returns the
private data member hours data.
7. The getMinute constant function returns one integer but doesnt take anything. It returns the
private data member minutes data.
8. The getSecond constant function returns one integer but doesnt take anything. It returns the
private data member seconds data.
9. The Time destructor does not take anything. It displays "Time object destructor is
called."
message and calls printStandard and printUniversal functions.
10. The printUniversal constant function does not return or accept anything. It displays time in
universal-time format.
11. The printStandard constant function does not return or accept anything. It displays time in
standard-time f.
C++ Please I am posting the fifth time and hoping to get th.pdfjaipur2
Â
C++
"Please I am posting the fifth time and hoping to get this resolved. I want the year to
change from 2014 to 2015 but the days of the month change to 32 rather than 1/1/2015.
Also, Please I want personal information in the heading as well Name: Last: and Course
Name:"
Modify the Time class(attached) to be able to work with Date class. The Time object should
always
remain in a consistent state.
Modify the Date class(attached) to include a Time class object as a composition, a tick member
function that increments the time stored in a Date object by one second, and increaseADay
function to
increase day, month and year when it is proper. Please use CISP400V10A4.cpp that tests the tick
member function in a loop that prints the time in standard format during iteration of the loop to
illustrate that the tick member function works correctly. Be aware that we are testing the following
cases:
a) Incrementing into the next minute.
b) Incrementing into the next hour.
c) Incrementing into the next day (i.e., 11:59:59 PM to 12:00:00 AM).
d) Incrementing into the next month and next year.
Time class
The Time class has three private integer data members, hour (0 - 23 (24-hour clock format)),
minute (0
59), and second (0 59).
It also has Time, setTime, setHour, setMinute, setSecond, getHour(), getMinute,
getSecond,~Time,
printUniversal, and printStandard public functions.
1. The Time function is a default constructor. It takes three integers and they all have 0 as default
values. It also displays "Time object constructor is called." message and calls
printStandard
and printUniversal functions.
2. The setTime function takes three integers but does not return any value. It initializes the
private data members (hour, minute and second) data.
3. The setHour function takes one integer but doesnt return anything. It validates and stores the
integer to the hour private data member.
4. The setMinute function takes one integer but doesnt return anything. It validates and stores
the integer to the minute private data member.
5. The setSecond function takes one integer but doesnt return anything. It validates and stores
the integer to the second private data member.
Page 3 of 11 CISP400V10A4
6. The getHour constant function returns one integer but doesnt take anything. It returns the
private data member hours data.
7. The getMinute constant function returns one integer but doesnt take anything. It returns the
private data member minutes data.
8. The getSecond constant function returns one integer but doesnt take anything. It returns the
private data member seconds data.
9. The Time destructor does not take anything. It displays "Time object destructor is
called."
message and calls printStandard and printUniversal functions.
10. The printUniversal constant function does not return or accept anything. It displays time in
universal-time format.
11. The printStandard constant function does not return or accept anything. It displays time in
standard-ti.
Military time and Standard time, JavaOne of the assignments given .pdfmarketing413921
Â
Military time and Standard time, Java
One of the assignments given is to create a program that will essentially test Military time and
Standard time. The Guidlines to the problem are as follows:
Each class should be in a separate file. All related classes should be in a package. The main class
should not be in the package.
Create a Time class (abstract) that includes the following members:
* hour
* minutes
* seconds
* Include overloaded constructor and accessor/mutator functions
Create a MilTime class derived from Time that includes the following members
* milHours
- stores military time as an integer
- 1:00 PM would be stored as 1300
- 4:30 PM would be stored as 1630
* accessor for MilHour
- override frombaseclass
- return milHours
* Mutator for milHour
* Overloaded constructor
- accept milHours and seconds
- convert milHours to hours and minutes and store in class variables
* setTime
- same asconstructor
* getStandHr
- return hour instandardformat
- call base class accessor
Create a TimeClock class derived from MilTime that includes:
* another milHours and seconds variables
- these hours represent an ending time
- the variables inherited from MilTime represent a starting time
* overloaded constructor
- accept start time and end time
- usebaseclass constructor to storestarttime
* accessor and mutator for new class variables
* TimeDifference
- calculate the number of hours betweenstarttime and end time
Create a main program that uses a MilTIme object and a TimeClock object
* Test that all class member functions work properly
* Create the objects based on user input
The MilTime and TimeClock classes should validate that the data entered is within the proper
ranges
* seconds should be between 0 and 59 (inclusive)
* military time should be between 0 and 2359 (inclusive)
- the last two digits should never be between 60 and 99 (inclusive)
* numbers outside the range should be set to the closest valid number
=====================================================================
==================
I have created a total of 4 .java files so far; main.java, Time.java, MilTime.java, and
TimeClock.java
My I decided to work on this problem from top to bottom, starting with Time.java.
/* Time.java */
package demo
abstract public class Time
{
private int hour, minute, second;
// Default constructor.
public Time()
{
hour = 0;
minute = 0;
second = 0;
}
// Overloaded constructor.
public Time(int getHour, int getMinute, int getSecond)
{
hour = getHour;
minute = getMinute;
second = getSecond;
}
// Accessor/Mutator functions.
public int getHour()
{
return hour;
}
public int getMinute()
{
return minute;
}
public int getSecond()
{
return second;
}
public void setHour(int hour)
{
this.hour = hour;
}
public void setMinute(int minute)
{
this.minute = minute;
}
public void setSecond(int second)
{
this.second = second;
}
}
This class I believe I have correct according to the assignment guide. However after this I am
completely stuck.
/* MilTime.java */
package demo
publ.
An exploration into RxJava on Android for the experienced, yet uninitiated software engineer. This presentation explores Declarative vs Imperative programming paradigms and expands the discussion into Functional Reactive Programming. It explains the benefits of the observer contract, high-order functions, and schedulers available in RxJava. It also explains the purpose of the Android integration libraries: RxAndroid, RxLifecycle, and RxBindings.
Quarkus Hidden and Forbidden ExtensionsMax Andersen
Â
Quarkus has a vast extension ecosystem and is known for its subsonic and subatomic feature set. Some of these features are not as well known, and some extensions are less talked about, but that does not make them less interesting - quite the opposite.
Come join this talk to see some tips and tricks for using Quarkus and some of the lesser known features, extensions and development techniques.
AI Genie Review: Worldâs First Open AI WordPress Website CreatorGoogle
Â
AI Genie Review: Worldâs First Open AI WordPress Website Creator
đđ Click Here To Get More Info đđ
https://sumonreview.com/ai-genie-review
AI Genie Review: Key Features
â Creates Limitless Real-Time Unique Content, auto-publishing Posts, Pages & Images directly from Chat GPT & Open AI on WordPress in any Niche
â First & Only Google Bard Approved Software That Publishes 100% Original, SEO Friendly Content using Open AI
â Publish Automated Posts and Pages using AI Genie directly on Your website
â 50 DFY Websites Included Without Adding Any Images, Content Or Doing Anything Yourself
â Integrated Chat GPT Bot gives Instant Answers on Your Website to Visitors
â Just Enter the title, and your Content for Pages and Posts will be ready on your website
â Automatically insert visually appealing images into posts based on keywords and titles.
â Choose the temperature of the content and control its randomness.
â Control the length of the content to be generated.
â Never Worry About Paying Huge Money Monthly To Top Content Creation Platforms
â 100% Easy-to-Use, Newbie-Friendly Technology
â 30-Days Money-Back Guarantee
See My Other Reviews Article:
(1) TubeTrivia AI Review: https://sumonreview.com/tubetrivia-ai-review
(2) SocioWave Review: https://sumonreview.com/sociowave-review
(3) AI Partner & Profit Review: https://sumonreview.com/ai-partner-profit-review
(4) AI Ebook Suite Review: https://sumonreview.com/ai-ebook-suite-review
#AIGenieApp #AIGenieBonus #AIGenieBonuses #AIGenieDemo #AIGenieDownload #AIGenieLegit #AIGenieLiveDemo #AIGenieOTO #AIGeniePreview #AIGenieReview #AIGenieReviewandBonus #AIGenieScamorLegit #AIGenieSoftware #AIGenieUpgrades #AIGenieUpsells #HowDoesAlGenie #HowtoBuyAIGenie #HowtoMakeMoneywithAIGenie #MakeMoneyOnline #MakeMoneywithAIGenie
Introducing Crescat - Event Management Software for Venues, Festivals and Eve...Crescat
Â
Crescat is industry-trusted event management software, built by event professionals for event professionals. Founded in 2017, we have three key products tailored for the live event industry.
Crescat Event for concert promoters and event agencies. Crescat Venue for music venues, conference centers, wedding venues, concert halls and more. And Crescat Festival for festivals, conferences and complex events.
With a wide range of popular features such as event scheduling, shift management, volunteer and crew coordination, artist booking and much more, Crescat is designed for customisation and ease-of-use.
Over 125,000 events have been planned in Crescat and with hundreds of customers of all shapes and sizes, from boutique event agencies through to international concert promoters, Crescat is rigged for success. What's more, we highly value feedback from our users and we are constantly improving our software with updates, new features and improvements.
If you plan events, run a venue or produce festivals and you're looking for ways to make your life easier, then we have a solution for you. Try our software for free or schedule a no-obligation demo with one of our product specialists today at crescat.io
AI Fusion Buddy Review: Brand New, Groundbreaking Gemini-Powered AI AppGoogle
Â
AI Fusion Buddy Review: Brand New, Groundbreaking Gemini-Powered AI App
đđ Click Here To Get More Info đđ
https://sumonreview.com/ai-fusion-buddy-review
AI Fusion Buddy Review: Key Features
â Create Stunning AI App Suite Fully Powered By Google's Latest AI technology, Gemini
â Use Gemini to Build high-converting Converting Sales Video Scripts, ad copies, Trending Articles, blogs, etc.100% unique!
â Create Ultra-HD graphics with a single keyword or phrase that commands 10x eyeballs!
â Fully automated AI articles bulk generation!
â Auto-post or schedule stunning AI content across all your accounts at onceâWordPress, Facebook, LinkedIn, Blogger, and more.
â With one keyword or URL, generate complete websites, landing pages, and moreâŚ
â Automatically create & sell AI content, graphics, websites, landing pages, & all that gets you paid non-stop 24*7.
â Pre-built High-Converting 100+ website Templates and 2000+ graphic templates logos, banners, and thumbnail images in Trending Niches.
â Say goodbye to wasting time logging into multiple Chat GPT & AI Apps once & for all!
â Save over $5000 per year and kick out dependency on third parties completely!
â Brand New App: Not available anywhere else!
â Beginner-friendly!
â ZERO upfront cost or any extra expenses
â Risk-Free: 30-Day Money-Back Guarantee!
â Commercial License included!
See My Other Reviews Article:
(1) AI Genie Review: https://sumonreview.com/ai-genie-review
(2) SocioWave Review: https://sumonreview.com/sociowave-review
(3) AI Partner & Profit Review: https://sumonreview.com/ai-partner-profit-review
(4) AI Ebook Suite Review: https://sumonreview.com/ai-ebook-suite-review
#AIFusionBuddyReview,
#AIFusionBuddyFeatures,
#AIFusionBuddyPricing,
#AIFusionBuddyProsandCons,
#AIFusionBuddyTutorial,
#AIFusionBuddyUserExperience
#AIFusionBuddyforBeginners,
#AIFusionBuddyBenefits,
#AIFusionBuddyComparison,
#AIFusionBuddyInstallation,
#AIFusionBuddyRefundPolicy,
#AIFusionBuddyDemo,
#AIFusionBuddyMaintenanceFees,
#AIFusionBuddyNewbieFriendly,
#WhatIsAIFusionBuddy?,
#HowDoesAIFusionBuddyWorks
Top Features to Include in Your Winzo Clone App for Business Growth (4).pptxrickgrimesss22
Â
Discover the essential features to incorporate in your Winzo clone app to boost business growth, enhance user engagement, and drive revenue. Learn how to create a compelling gaming experience that stands out in the competitive market.
Launch Your Streaming Platforms in MinutesRoshan Dwivedi
Â
The claim of launching a streaming platform in minutes might be a bit of an exaggeration, but there are services that can significantly streamline the process. Here's a breakdown:
Pros of Speedy Streaming Platform Launch Services:
No coding required: These services often use drag-and-drop interfaces or pre-built templates, eliminating the need for programming knowledge.
Faster setup: Compared to building from scratch, these platforms can get you up and running much quicker.
All-in-one solutions: Many services offer features like content management systems (CMS), video players, and monetization tools, reducing the need for multiple integrations.
Things to Consider:
Limited customization: These platforms may offer less flexibility in design and functionality compared to custom-built solutions.
Scalability: As your audience grows, you might need to upgrade to a more robust platform or encounter limitations with the "quick launch" option.
Features: Carefully evaluate which features are included and if they meet your specific needs (e.g., live streaming, subscription options).
Examples of Services for Launching Streaming Platforms:
Muvi [muvi com]
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4. Previous implementation and
problems in real world
⢠Date itâs an instance of time (not a date)
⢠Calendar is date and time
⢠Date instance are mutable
⢠Months is 0 based
⢠Years is 1900 based (the year 2015 is
represented as 115)
5. Example 1
public static void main(String[] args) {
Date start = new Date(2012, Calendar.FEBRUARY, 1);
Calendar startEmployment = Calendar.getInstance();
// calendar.set(2011, 2, 1);
startEmployment.set(2011, Calendar.FEBRUARY, 1);
Calendar now = Calendar.getInstance();
long numberOfDays1 = countDays(startEmployment, now);
long numberOfDays2 = countDays(startEmployment, now);
System.out.println(String.format("First try=%d , second try=%d", numberOfDays1, numberOfDays2));
}
private static long countDays(Calendar start, Calendar end) {
long totalNumberOfDays = 0;
while(start.before(end)) {
start.add(Calendar.DAY_OF_MONTH, 1);
totalNumberOfDays++;
}
return totalNumberOfDays;
}
Months starts from 0
Calendar is mutable
Deprecated
Deprecated
6. Example 2
private static final int SECOND = 1000;
private static final int MINUTE = 60 * SECOND;
private static final int HOUR = 60 * MINUTE;
private static final int DAY = 24 * HOUR;
public static void main(String[] args) {
Calendar now = Calendar.getInstance();
Date nowDate = now.getTime();
long twoHoursByMillis = 2 * HOUR;
long thirtyMinutesByMillis = 30 * MINUTE;
Date twoHoursAndThirtyMinutesFromNow = new Date(twoHoursByMillis
+ thirtyMinutesByMillis);
System.out.println(String.format("now %s and later %s", nowDate,
twoHoursAndThirtyMinutesFromNow));
now Wed Oct 07 17:36:13 EEST 2015 and later Thu Jan 01 04:30:00 EET 1970
7. Example 3
private static final int SECOND = 1000;
private static final int MINUTE = 60 * SECOND;
private static final int HOUR = 60 * MINUTE;
private static final int DAY = 24 * HOUR;
public static void main(String[] args) {
long ms = 10304004543l;
StringBuilder text = new StringBuilder("");
if (ms > DAY) {
text.append(ms / DAY).append(" days ");
ms %= DAY;
}
if (ms > HOUR) {
text.append(ms / HOUR).append(" hours ");
ms %= HOUR;
}
if (ms > MINUTE) {
text.append(ms / MINUTE).append(" minutes ");
ms %= MINUTE;
}
if (ms > SECOND) {
text.append(ms / SECOND).append(" seconds ");
ms %= SECOND;
}
text.append(ms + " ms");
System.out.println(text.toString()); 119 days 6 hours 13 minutes 24 seconds 543 ms
8. Difference between java.util.Date and
java.sql.Date
⢠java.sql.Date stores years, months and days.
Additionally sql.Date isn't tied to timezones.
⢠java.sql.Time only contains information about
hour, minutes, seconds and milliseconds.
⢠java.sql.Timestamp corresponds to SQL
TIMESTAMP which is exact date to the
nanosecond (note that util.Date only supports
milliseconds!).
10. Date Time Java 8 (JSR 310)
⢠Immutable and Thread Safe
⢠Domain-Driven Design
â Well-defined and clear purpose
â Extensible, by use of strategy pattern
â Amount of time â different representation for
different cases
⢠Human (year, month, day, time zones, calendar systems)
⢠Machine Time
⢠Separation of chronologies (calendars)
11. New packages
⢠java.time â instants, duration, dates, times,
timezone, periods
⢠java.time.format â formatting and parsing
⢠java.time.temporal â field, unit, adjustment
access to temporals
⢠java.time.zone â support for time zone
⢠java.time.chrono â calendar systems other
than ISO-8601
13. Temporal Based classes
Time
Duration
(Temporal Amount)
Period
(Temporal Amount)
Instant
(Temporal)
Instant
(Temporal)
LocalDate, etc.
(Temporal)
LocalDate, etc.
(Temporal)
Machine time
Human readable
14. Date and Time
⢠LocalDate
â Contains just a dateâno time and no time zone
â Corresponds to SQL DATE type
⢠LocalTime
â Contains just a timeâno date and no time zone
â Corresponds to SQL TIME type
⢠LocalDateTime
â Contains both a date and time but no time zone
â Corresponds to SQL TIMESTAMP type
15. Examples
// LocalDate Contains just a dateâno time and no time zone.
LocalDate date1 = LocalDate.of(2015, Month.JANUARY, 20);
LocalDate date2 = LocalDate.of(2015, 1, 20);
System.out.println(date1); // 2015-01-20
System.out.println(date2); // 2015-01-20
// LocalDate d = new LocalDate(); // does not compile - private constructor
// LocalDate.of(2015, Month.JANUARY, 32); // throws DateTimeException
// LocalTime Contains just a timeâno date and no time zone.
LocalTime time1 = LocalTime.of(6, 15); // hour and minute
LocalTime time2 = LocalTime.of(6, 15, 30); // + seconds
LocalTime time3 = LocalTime.of(6, 15, 30, 200); // + nanoseconds
System.out.println(time1); // 06:15
System.out.println(time2); // 06:15:30
System.out.println(time3); // 06:15:30.000000200
// LocalDateTime Contains both a date and time but no time zone.
LocalDateTime dateTime1 = LocalDateTime.of(2015, Month.JANUARY, 20, 6, 15, 30);
LocalDateTime dateTime2 = LocalDateTime.of(date1, time1);
System.out.println(dateTime1); // 2015-01-20T06:15:30
System.out.println(dateTime2); // 2015-01-20T06:15
17. Instant
// Instant is useful for generating a time stamp to represent machine time.
Instant timestamp = Instant.now();
// Gets the number of seconds from the Java epoch of 1970-01-01T00:00:00Z.
System.out.println("timestamp: " + timestamp.getEpochSecond()); // timestamp: 1444654450
// How many seconds have occurred since the beginning of the Java epoch.
long secondsFromEpoch = Instant.ofEpochSecond(0L).until(Instant.now(), ChronoUnit.SECONDS);
System.out.println("Amount of seconds from java epoch: " + secondsFromEpoch); // 1444654450
long minutesFromEpoch = Instant.ofEpochSecond(0L).until(Instant.now(), ChronoUnit.MINUTES);
System.out.println("Amount of minutes from java epoch: " + minutesFromEpoch); // 24077574
// Convert "machine time" to human units
LocalDateTime humanTime = LocalDateTime.ofInstant(timestamp, ZoneId.systemDefault());
// different methods to operate time!
// toString the same
System.out.println("timestamp: " + timestamp); // 2015-10-12T12:54:10.787Z
System.out.println("humanTime: " + humanTime); // 2015-10-12T13:54:10.787Z
19. Time Zone and Offset Classes
A time zone is a region of the earth where the same
standard time is used.
⢠ZoneId specifies a time zone identifier and
provides rules for converting between an Instant
and a LocalDateTime (format region/city
(Asia/Tokyo))
⢠ZoneOffset specifies a time zone offset from
Greenwich/UTC time (offset for Tokyo is +09:00).
20. Example
private static void printAllTimeZones(){
Set<String> allZones = ZoneId.getAvailableZoneIds();
LocalDateTime dt = LocalDateTime.now();
// Create a List using the set of zones and sort it.
List<String> zoneList = new ArrayList<String>(allZones);
//Collections.sort(zoneList);
for (String s : zoneList) {
ZoneId zone = ZoneId.of(s);
ZonedDateTime zdt = dt.atZone(zone);
ZoneOffset offset = zdt.getOffset();
int secondsOfHour = offset.getTotalSeconds() % (60 * 60); // just seconds!!!
String out = String.format("%35s %10s%n", zone, offset);
System.out.printf(out);
}
}
ZoneId Offset
Asia/Jerusalem +03:00
Europe/Andorra +02:00
US/Samoa -11:00
Asia/Vientiane +07:00
21. Date-Time Classes
⢠ZonedDateTime handles a date and time with a
corresponding time zone with a time zone offset
from Greenwich/UTC.
⢠OffsetDateTime handles a date and time with a
corresponding time zone offset from
Greenwich/UTC, without a time zone ID.
⢠OffsetTime handles time with a corresponding
time zone offset from Greenwich/UTC, without a
time zone ID.
22. ZonedDateTime
private static void zonedDateTime() {
DateTimeFormatter format = DateTimeFormatter.ofPattern("MMM d yyyy hh:mm a");
// Leaving from San Francisco on July 20, 2013, at 7:30 p.m.
LocalDateTime leaving = LocalDateTime.of(2015, Month.JULY, 20, 19, 30);
ZoneId leavingZone = ZoneId.of("America/Los_Angeles");
ZonedDateTime departure = ZonedDateTime.of(leaving, leavingZone);
String out1 = departure.format(format);
System.out.printf("LEAVING: %s (%s)%n", out1, leavingZone);
// Flight is 10 hours and 50 minutes, or 650 minutes
ZoneId arrivingZone = ZoneId.of("Asia/Tokyo");
ZonedDateTime arrival = departure.withZoneSameInstant(arrivingZone)
.plusHours(10).plusMinutes(50);
String out2 = arrival.format(format);
System.out.printf("ARRIVING: %s (%s)%n", out2, arrivingZone);
// ĐťŃŃĐ˝ŃĐš ŃĐ°Ń
if (arrivingZone.getRules().isDaylightSavings(arrival.toInstant())) {
System.out.printf(" (%s daylight saving time will be in effect.)%n", arrivingZone);
} else {
System.out.printf(" (%s standard time will be in effect.)%n", arrivingZone);
}
}
LEAVING: Нип. 20 2015 07:30 PM (America/Los_Angeles)
ARRIVING: Нип. 21 2015 10:20 PM (Asia/Tokyo)
(Asia/Tokyo standard time will be in effect.)
23. OffsetDateTime
// Find the last Thursday in October 2015.
LocalDateTime localDate = LocalDateTime.of(2015, Month.OCTOBER, 20, 19, 30);
ZoneOffset offset = ZoneOffset.of("-08:00");
OffsetDateTime offsetDate = OffsetDateTime.of(localDate, offset);
OffsetDateTime lastThursday =
offsetDate.with(TemporalAdjusters.lastInMonth(DayOfWeek.THURSDAY));
System.out.printf("The last Thursday in October 2015 is the %sth.%n",
lastThursday.getDayOfMonth());
OffsetDateTime odt = OffsetDateTime.of(LocalDateTime.now(),ZoneOffset.of("-4"));
System.out.println(odt); // 2015-10-13T11:14:03.073-04:00
This class may be used when modeling date-time
concepts in more detail, or when communicating
to a database or in a network protocol.
24. OffsetTime
OffsetTime ot = OffsetTime.ofInstant(Instant.now(),ZoneId.of("America/Los_Angeles"));
System.out.println(ot); // 01:14:03.073-07:00
The OffsetTime class is used in the same situations
as the OffsetDateTime class, but when tracking
the date is not needed.
25. Period
@Test
public void test_period_between_dates(){
LocalDate twins = LocalDate.parse("2003-11-18");
LocalDate mayhem = LocalDate.parse("2009-06-01");
Period timeBetween = Period.between(twins,mayhem);
assertThat(timeBetween.getYears(),is(5));
assertThat(timeBetween.getMonths(),is(6));
assertThat(timeBetween.getDays(),is(14));
}
public static Period period(LocalDate hiringDate) {
LocalDate today = LocalDate.now();
return Period.between(hiringDate, today);
}
private static void period() {
System.out.println("period");
Period employmentPeriod = PeriodLauncher.period(LocalDate.of(2011, Month.FEBRUARY, 1));
System.out.println(employmentPeriod.getYears()); // 4
System.out.println(employmentPeriod.getMonths()); // 8
System.out.println(employmentPeriod.getDays()); // 12
}
Define an amount of time with date-based
values (years, months, days)
JUnit
26. Duration
public static void main(String[] args) {
Instant t1 = Instant.now();
Instant t2 = Instant.now().plusSeconds(12);
long nanos = Duration.between(t1, t2).toNanos();
System.out.println(nanos); // 12000000000
long milis = Duration.between(t2, t1).toMillis();
System.out.println(milis); // -12000
Duration gap = Duration.ofSeconds(13);
Instant later = t1.plus(gap);
System.out.println(t1); // 2015-10-13T08:58:41.312Z
System.out.println(later); // 2015-10-13T08:58:54.312Z
}
The Duration class represents arbitrary amounts
of time in hours, minutes or seconds.
27. Chrono Units
public static void main(String[] args) {
// units
Instant.now().plus(1, ChronoUnit.DAYS); // Unit that represents the concept of a day.
System.out.println(ChronoUnit.DAYS); // Days
System.out.println(Arrays.asList(ChronoUnit.values()));
// [Nanos, Micros, Millis, Seconds, Minutes, Hours, HalfDays,
// Days, Weeks, Months, Years, Decades, Centuries, Millennia, Eras, Forever]
Instant previous = Instant.ofEpochSecond(54545454);
Instant current = Instant.now();
long gap = ChronoUnit.MILLIS.between(previous, current);
Duration duration = ChronoUnit.MILLIS.getDuration();
System.out.println(gap); // 1390181631925
System.out.println(duration); // PT0.001S
}
The ChronoUnit enum defines the units used to
measure time.
28. Class or Enum Year Month Day Hours Min Sec* Zone Offset Zone ID toString Output
Instant + 2015-08-20T15:16:26.355Z
LocalDate + + + 2015-08-20
LocalDateTime + + + + + + 2015-08-20T08:16:26.937
ZonedDateTime + + + + + + + + 2015-08-21T00:16:26.941+09:00[Asia/Tokyo]
LocalTime + + + 08:16:26.943
MonthDay + + --08-20
Year + 2015
YearMonth + + 2015-08
Mouth + AUGUST
OffsetDateTime + + + + + + + 2015-08-20T08:16:26.954-07:00
OffsetTime + + + + 08:16:26.957-07:00
Duration + PT20H (20 hours)
Period + + + P10D (10 days)
*Seconds are captured to nanosecond precision
29. Temporal Adjuster
private static void adjusters() {
LocalDate date = LocalDate.of(2015, Month.OCTOBER, 14);
DayOfWeek dotw = date.getDayOfWeek();
System.out.printf("%s is on a %s%n", date, dotw);
System.out.printf("first day of Month: %s%n",
date.with(TemporalAdjusters.firstDayOfMonth()));
System.out.printf("first Monday of Month: %s%n",
date.with(TemporalAdjusters.firstInMonth(DayOfWeek.MONDAY)));
System.out.printf("last day of Month: %s%n",
date.with(TemporalAdjusters.lastDayOfMonth()));
System.out.printf("first day of next Month: %s%n",
date.with(TemporalAdjusters.firstDayOfNextMonth()));
System.out.printf("first day of next Year: %s%n",
date.with(TemporalAdjusters.firstDayOfNextYear()));
System.out.printf("first day of Year: %s%n",
date.with(TemporalAdjusters.firstDayOfYear()));
}
2015-10-14 is on a WEDNESDAY
first day of Month: 2015-10-01
first Monday of Month: 2015-10-05
last day of Month: 2015-10-31
first day of next Month: 2015-11-01
first day of next Year: 2016-01-01
first day of Year: 2015-01-01
30. Thanksgiving, Presidentâs Day and
Programmerâs Day examples
private static void thanksgiving(int year) {
LocalDate thanksGiving = Year.of(year).atMonth(Month.NOVEMBER).atDay(1)
.with(TemporalAdjusters.lastInMonth(DayOfWeek.THURSDAY));
LocalDate thanksGiving4 = Year.of(year).atMonth(Month.NOVEMBER).atDay(1)
.with(TemporalAdjusters.dayOfWeekInMonth(4, DayOfWeek.THURSDAY));
// the last Thursday in November
System.out.println("ThanksGiving: " + thanksGiving);
// the 4th Thursday in November
System.out.println("ThanksGiving: " + thanksGiving4);
}
private static void programmersDay(int year) {
// on the 256th day
LocalDate programmersDay = Year.of(year).atMonth(1).atDay(1).
with(ChronoField.DAY_OF_YEAR, 256);
// LocalDate programmersDay = LocalDate.of(year, 1, 1).plusDays(256);
System.out.println("Programmer's Day: " + programmersDay);
}
ThanksGiving: 2015-11-26
ThanksGiving: 2015-11-26
ThanksGiving: 2016-11-24
ThanksGiving: 2016-11-24
ThanksGiving: 2017-11-30
ThanksGiving: 2017-11-23
Programmer's Day: 2015-09-13
Programmer's Day: 2016-09-12
Programmer's Day: 2017-09-13
private static void presidentDay(int year) {
// the first Monday Of February
LocalDate presidentsDay =
Year.of(year).atMonth(Month.FEBRUARY).atDay(1)
.with(TemporalAdjusters.firstInMonth(DayOfWeek.MONDAY));
System.out.println("President's day (USA): " + presidentsDay);
}
President's day (USA): 2015-02-02
President's day (USA): 2016-02-01
President's day (USA): 2017-02-06
31. Custom Adjuster
public class PaydayAdjuster implements TemporalAdjuster{
/**
* The adjustInto method accepts a Temporal instance
* and returns an adjusted LocalDate. If the passed in
* parameter is not a LocalDate, then a DateTimeException is thrown.
*/
public Temporal adjustInto(Temporal input) {
LocalDate date = LocalDate.from(input);
int day;
if (date.getDayOfMonth() < 15) {
day = 15;
} else {
day = date.with(TemporalAdjusters.lastDayOfMonth()).getDayOfMonth();
}
date = date.withDayOfMonth(day);
if (date.getDayOfWeek() == DayOfWeek.SATURDAY ||
date.getDayOfWeek() == DayOfWeek.SUNDAY) {
date = date.with(TemporalAdjusters.previous(DayOfWeek.FRIDAY));
}
return input.with(date);
}
}
32. Custom Adjuster
private static void customAdjuster() {
LocalDate october_13 = LocalDate.of(2015, Month.OCTOBER, 13);
LocalDate nextPayday1 = october_13.with(new PaydayAdjuster());
System.out.println("Given the date: " + october_13);
System.out.println("the next payday: " + nextPayday1);
LocalDate october_18 = LocalDate.of(2015, Month.OCTOBER, 18);
LocalDate nextPayday2 = october_18.with(new PaydayAdjuster());
System.out.println("Given the date: " + october_18);
System.out.println("the next payday: " + nextPayday2);
}
Given the date: 2015-10-13
the next payday: 2015-10-15
Given the date: 2015-10-18
the next payday: 2015-10-30
33. Temporal Query
// ŃĐžŃĐ˝ŃŃŃŃ
TemporalQuery<TemporalUnit> query = TemporalQueries.precision();
System.out.printf("LocalDate precision is %s%n", LocalDate.now().query(query)); // Days
System.out.printf("LocalDateTime precision is %s%n", LocalDateTime.now().query(query)); // Nanos
System.out.printf("Year precision is %s%n", Year.now().query(query)); // Years
System.out.printf("YearMonth precision is %s%n", YearMonth.now().query(query)); // Months
System.out.printf("Instant precision is %s%n", Instant.now().query(query)); // Nanos
System.out.println();
LocalDateTime date = LocalDateTime.of(2014, Month.DECEMBER, 02, 0, 0);
ZonedDateTime zonedDate1 = ZonedDateTime.of(date,
ZoneId.of("Pacific/Chatham"));
ZonedDateTime zonedDate2 = ZonedDateTime.of(date,
ZoneId.of("Asia/Dhaka"));
zoneQueries(zonedDate1, zonedDate2);
offsetQueries(zonedDate1, zonedDate2);
36. Custom Queries
public class SchoolHolidayQuery implements TemporalQuery<Boolean> {
@Override
public Boolean queryFrom(TemporalAccessor date) {
int month = date.get(ChronoField.MONTH_OF_YEAR);
if (month == Month.JULY.getValue() || month == Month.AUGUST.getValue()) {
return true;
}
return false;
}
}
public class YearQuarterQuery {
public static YearQuarter findQuarter(TemporalAccessor date) {
int month = date.get(ChronoField.MONTH_OF_YEAR);
if (month >= 1 && month <= 3) {
return YearQuarter.Q1;
} else if (month >= 4 && month <= 6) {
return YearQuarter.Q2;
} else if (month >= 7 && month <= 9) {
return YearQuarter.Q3;
} else {
return YearQuarter.Q4;
}
}
}
public enum YearQuarter {
Q1, Q2, Q3, Q4
}
37. Clock
The Clock class is abstract, so you cannot create
an instance of it. The following factory methods
can be useful for testing
â Clock.offset(Clock, Duration) returns a clock that
is offset by the specified Duration.
â Clock.systemUTC() returns a clock representing
the Greenwich/UTC time zone.
â Clock.fixed(Instant, ZoneId) always returns the
same Instant. For this clock, time stands still.
38. Method Naming Conventions
Method Access Description
of Static Create an instance with validation
to Instance Convert to another type (truncate fields)
at Instance Combines this object with another (expands)
from Static Convert input parameters to an instance
get Instance Part of the state of the object
is Instance Queries state of an object
with Instance Returns a copy of an object with one changed element
plus/minus Instance Returns a copy of an object with amount of added /
subtracted time
parse Static Parses input string to an instance
format Instance Uses formatter to format the objectâs values to produce a
string
39. Epoch
⢠Reference point to measure time
⢠Maybe based on religious or political
milestones
⢠Divided the timeline into eras
⢠Start of a particular era
40. Cumputer System Epochs
⢠January 0, 0 â Matlab
⢠January 1, 1 â Symbian, .Net, new Windows
⢠January 1, 1601 â COBOL, old Windows
⢠January 1, 1900 â LISP, SNTP
⢠January 1, 1904 â Old Mac OS
⢠January 1, 1970 â Unix Epoch (Linux, Mac OS
X), Java, C, JavaScript, Perl, PHP, Python, Ruby
41. Calendar System
⢠Organizes days for social, religious,
commercial or administrative purposes
⢠Names periods like days, weeks, months and
years
⢠Periods may follow cycles of the sun or moon
⢠A date is a specific day in the system
⢠May be based on an epoch
42. UTC
⢠GMT is Greenwich Mean Time
â Mean solar time at the Royal Observatory in
Greenwich
⢠UTC is Coordinated Universal Time
â Precisely defined with atomic time. Does not
change with seasons
â Replaced GMT as reference time scale on 1
January 1972
43. ISO 8601
⢠International standard for representation of
dates and times
⢠Uses the Gregorian calendar system
⢠Ordered from most to least significant: year,
month, day, hour, minute
⢠Each date and time value has a fixed number
of digits with leading zones
⢠Uses four-digit year at minimum, YYYY
44. Chronology Interface
⢠Pluggable calendar system (ability to create
custom calendar)
⢠Provides access to date and time fields
⢠Built-in
â ISO8601 (default): IsoChronology
â Chinese: MinguoChronology
â Japanese: JapaneseChronology (since 1868-01-01)
â Thai Buddhist: ThaiBuddhistChronology
â Islamic: HijrahChronology
45. Era interface
⢠An era of the time-line.
⢠some calendar systems, have multiple eras, such as one for
the reign of each leader
â the Thai Buddhist calendar system divides time into two eras,
before and after a single date.
â the Japanese calendar system has one era for the reign of each
Emperor.
⢠Bilt-in (enums)
â IsoEra (BCE; CE)
â MingouEra (BEFORE_ROC; ROC)
â JapaneseEra (MEIJI; TAISHO; SHOWA; HEISEI)
â ThaiBuddhistEra (BEFORE_BE; BE)
â HijrahEra (AH)
48. Legacy Date Time Integration
public class Launcher {
public static void main(String[] args) {
// Old to new
Date date = new Date();
LocalDateTime localDateTime = LocalDateTime.ofInstant(date.toInstant(), ZoneId.systemDefault());
// New to old
LocalDateTime now = LocalDateTime.now();
Instant instant = now.atZone(ZoneId.systemDefault()).toInstant();
Date dateFromOld = Date.from(instant);
}
}
49. Mapping java.util Date and Time
Functionality to java.time
java.util Functionality java.time Functionality
java.util.Date java.time.Instant
java.util.GregorianCalendar java.time.ZonedDateTime
java.util.TimeZone java.time.ZoneId or
java.time.ZoneOffset
GregorianCalendar with the date set
to 1970-01-01
java.time.LocalTime
GregorianCalendar with time set to 00:00. java.time.LocalDate
51. JSR 310 vs JodaTime
⢠Both libraries use immutable types. Joda-Time
also offers additional mutable types like
MutableDateTime.
⢠Null. Joda-Time often use NULL as default for
system timezone, default locale, current
timestamp etc. while JSR-310 almost always
rejects NULL values.
52. Supported fields
An overview about supported fields in Java-8 (JSR-
310) is given by some classes in the temporal-
package (for example ChronoField and WeekFields)
while Joda-Time is rather weak on this area â see
DateTimeFieldType.
The biggest lack of Joda-Time is here the absence of
localized week-related fields.
A common feature of both field implementation
design is that both are based on values of type long
(no other types, not even enums).
53. Enum
JSR-310 offers enums like DayOfWeek or Month
while Joda-Time does not offer this because it
was mainly developed in years 2002-2004
before Java 5.
54. Zone API
JSR-310 offers more timezone features than
Joda-Time.
Latter is not able to yield a programmatically
access to the history of timezone offset
transitions while JSR-310 is capable to do this.
55. Adjuster vs. Property
⢠JSR 310 has very limited value because the burden to
write code is still with the user. Built-in solutions based
on the new TemporalAdjuster-concept are not so
many, there is currently only the helper class
TemporalAdjusters with a limited set of manipulations
(and the enums Month or other temporal types).
⢠Joda-Time offers a field-package but practice has
shown evidence that new field implementations are
very hard to code. On the other side Joda-Time offers
so-called properties which make some manipulations
much easier and more elegant than in JSR-310
56. Calendar systems
Joda-Time provide 8 calendar systems:
⢠Buddhist
⢠Coptic (Egypt â Alexandrian Calendar)
⢠Ethiopic (Ethiopia)
⢠Gregorian-Julian cutover
⢠Gregorian
⢠Islamic
⢠ISO
⢠Julian
Calendars like Hebrew or Persian or Hindu are completely missing in both
libraries.
Joda-Time updates calendars with each release version (you may download it
from the web site manually) while java may update only with next path.
57. Clocks
JSR-310 has no interface (a design mistake) but an
abstract class java.time.Clock which can be used for
any clock dependency injection.
Joda-Time offers the interface MillisProvider and
some helper methods in DateTimeUtils instead.
So this way Joda-Time is also capable of supporting
test-driven models with different clocks (mocking
etc.).
58. Intervals
JSR-310 does not support this feature while
Joda-Time has limited support.
NOTE: Time4j has more rich package (range) for
this purpose!