Future of Java EE with SE 8 (revised)
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Happy Java 8 release! But for Java EE 7? Is the SE 8 works for EE 7? this slide shows the current situation of applying SE 8 to EE 7. This is the revised version of "JJUG CCC 2014 Spring" session, for the "Java 8 workshop at Fukuoka".
![hashtag: #j8fk
List<String> aList
= Arrays.asList(new String[]{"a", "b", "c", "d", "e"});
// Normal
for (String x : aList) {
System.out.println(x);
}
// Lambda with parallel stream
aList.parallelStream().forEachOrdered(x -> System.out.println(x));
Stream API
(auto parallel threading)
Lambda Expression
(just a syntax sugar)
18](https://image.slidesharecdn.com/futureofjavaeewithse8revised2014-06-14-140614192055-phpapp02/85/Future-of-Java-EE-with-SE-8-revised-18-320.jpg)
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Future of Java EE with SE 8 (revised)
- 2. hashtag: #j8fk Hirofumi Iwasaki twitter: @HirofumiIwasaki (English) Carrier Planning, designing & implements for many huge enterprise systems for financial, manufacturer, public systems with enterprise middleware, especially Java EE & .NET in Japan for about 16 years. Opus, Lectures, etc. Lectures: Java Day Tokyo 2014, JJUG CCC 2014 Spring, WebLogic key person roundtable (2012-2013), etc. Magazine: @IT (2005-2010), CIO Magazine (2009), IT Architect (2005-2009), Web+DB Press (2005), Java World (2001-2004), DB Magazine (2000), etc. 2
- 3. hashtag: #j8fk 1. Status of Adapting Java 8 in EE Servers 2. Java SE 8 Updating - Basic Topics for EE 7 3. Java SE 8 Updating - Advanced Topics for EE 7 3
- 6. hashtag: #j8fk Standard specifications for application servers Commercial Open Source etc. Java EE Specification Liberty Profile etc. + 6
- 7. hashtag: #j8fk For ENTERPRISE systems (Enterprise Edition) specifications (full profile) 'Enterprise' means transactional. Core architecture is EJB (JTA & CMT) with auto transaction systems. Transactional connectivity for other systems with JPA (JDBC), JMS, RMI-IIOP. Web architecture with JSF (Servlet & Facelet), JAX. Each Java EE specification covers general enterprise requirements. Not for personal usage. Use Java SE only. Not for build-in usage. Use Java ME. For your enterprise system Use Java EE with Java SE. 7
- 8. hashtag: #j8fk J2EE 1.2 (1999) J2EE 1.3 (2001) J2EE 1.4 (2003) Java EE 5 (2006) Java EE 6 (2009) Java EE 7 (2013) Born! Pandemic Era Unite to Single Standard Again! 8
- 9. hashtag: #j8fk J2EE 1.2 (1999) J2EE 1.3 (2001) J2EE 1.4 (2003) Java EE 5 (2006) Java EE 6 (2009) Java EE 7 (2013) J2SE 1.2 (1998) J2SE 1.3 (2000) J2SE 1.4 (2002) J2SE 5 (2004) Java SE 6 (2006) Java SE 7 (2011) Java SE 8 (2014) Java EE 7 is not fit perfectly for SE 8 improved functions 9
- 10. hashtag: #j8fk Vendor App Server EE 1.4 (2003-) EE 5 (2006-) EE 6 (2009-) EE 7 (2013-) Open Source GlassFish - 2.x 3.x 4.0 Oracle WebLogic 9.x 10.x 12.x - IBM WebSphere 5.1 6.x, 7.x 8.x - IBM Liberty Profile - - 8.5 - Open Source Geronimo - 2.x 3.x - Open Source TomEE+ - - 1.x - Red Hat JBoss 4.x 5.1 7.1 - Red Hat WildFly - - - 8.0 Fujitsu Interstage 9.0,9.1 9.2,10.x,11. 0 11.1 - Hitachi Cosminexus 7.x 8.x 9.x - 10
- 11. hashtag: #j8fk Vendor App Server EE 6 (2009 -) EE 7 (2013-) Ver. SE Ver. Ver. SE Ver. Open Source GlassFish 3.x SE 7 4.0 SE 7 Oracle WebLogic 12.1.x SE 6, SE 7 - - IBM WebSphere 8.x SE 6, SE 7 - - Open Source Geronimo 3.x SE 6, SE 7 - - Open Source TomEE+ 1.x SE 7 - - Red Hat JBoss 7.x SE 6, SE 7 - - Red Hat WildFly - - 8.0 SE 7, SE 8 Fujitsu Interstage 11.1 SE 6, SE 7 - - Hitachi Cosminexus 9.x SE 7 - - * * WebLogic 12.1.1 only 11
- 18. hashtag: #j8fk List<String> aList = Arrays.asList(new String[]{"a", "b", "c", "d", "e"}); // Normal for (String x : aList) { System.out.println(x); } // Lambda with parallel stream aList.parallelStream().forEachOrdered(x -> System.out.println(x)); Stream API (auto parallel threading) Lambda Expression (just a syntax sugar) 18
- 20. hashtag: #j8fk // Calendar. Calendar cal = Calendar.getInstance(); // Date. int year = cal.get(Calendar.YEAR); int month = cal.get(Calendar.MONTH) + 1; int day = cal.get(Calendar.DAY_OF_MONTH); // Time. int hour = cal.get(Calendar.HOUR); int minutes = cal.get(Calendar.MINUTE); int second = cal.get(Calendar.SECOND); int millisecond = cal.get(Calendar.MILLISECOND); // Local Date Time. LocalDateTime dateTime = LocalDateTime.now(); // Local Date. LocalDate date = dateTime.toLocalDate(); int year = date.getYear(); int month = date.getMonthValue(); int day = date.getDayOfMonth(); DayOfWeek dayOfWeek = date.getDayOfWeek(); // Local Time. LocalTime time = dateTime.toLocalTime(); int hour = time.getHour(); int minute = time.getMinute(); int second = time.getSecond(); int nanoSecond = time.getNano(); Java 8 – -1 From Millisecond to Nanosecond (.000 .000000000) 20
- 21. hashtag: #j8fk // Date Calculation Calendar threeWAfter = Calendar.getInstance(); threeWAfter.setLenient(false); threeWAfter.add(Calendar.DAY_OF_MONTH, 7 * 3); Calendar fourMBefore = Calendar.getInstance(); fourMBefore.setLenient(false); fourMBefore.add(Calendar.MONTH, -4); // Time Calculation Calendar sevenHAfter = Calendar.getInstance(); sevenHAfter.setLenient(false); sevenHAfter.add(Calendar.HOUR, 7); Calendar threeMBefore = Calendar.getInstance(); threeMBefore.setLenient(false); threeMBefore.add(Calendar.MINUTE, -3); // Local Date Time. LocalDateTime dateTime = LocalDateTime.now(); LocalDate date = dateTime.toLocalDate(); LocalTime time = dateTime.toLocalTime(); // Date Calculation LocalDate threeWAfter = date.plusWeeks(3); LocalDate fourMBefore = date.minusMonths(4); // Time calculation LocalTime sevenHAfter = time.plusHours(7); LocalTime threeMBefore = time.minusMinutes(3); Java 8 – Simplified, sophisticated style! 21
- 22. hashtag: #j8fk ANSI SQL Java SE 8 DATE java.time.LocalDate TIME java.time.LocalDate TIMESTAMP java.time.LocalDateTime TIME WITH TIMEZONE java.time.OffsetTime TIMESTAMP WITH TIMEZONE java.time.OffsetDateTime http://www.oracle.com/technetwork/articles/java/jf14-date-time-2125367.html 22
- 26. hashtag: #j8fk Rich Internet Apps (no business logics) Web Presentation (no business logics) Business Logic (no presentations) Data Access DBs Automatic Transaction Messaging MQ Connection Other Servers EMail MTA Main stage is here! 26
- 27. hashtag: #j8fk EE 7 didn’t consider the SE 8 in their specification. EE 7 spec don’t know the SE 8. Many SE 8 new functions might be work correctly if the app server supported the SE 8 as their VM. Lambda expressions Stream APIs (limited) New date time APIs (limited) etc. 27
- 28. hashtag: #j8fk But some conflicted specs might not be worked correctly Stream API (multithreading with EJB 3.2, e.g. parallel stream) New date time APIs (JDBC new mappings with JPA 2.1) etc. Wait the Java EE 8 for the full support of SE 8 28
- 32. hashtag: #j8fk Downloaded from here. 32
- 33. hashtag: #j8fk NetBeans 8 detected 4.0.1 33
- 34. hashtag: #j8fk NetBeans 8 supported JDK 8 34
- 35. hashtag: #j8fk Startup succeeded with NetBeans 8. 35
- 36. hashtag: #j8fk <EJB> LambdaLogic.java <CDI Bean> * IndexBean.java <JSF Facelet> * index.xhtml *This is just a workaround due to not working Web Services / REST tester in GlassFish 4.0.1b5. 36
- 45. hashtag: #j8fk Just a kidding code… 45
- 47. hashtag: #j8fk Just removed the EJB annotation, turn to POJO 47
- 50. hashtag: #j8fk Still not allowed. Oh… 50
- 51. hashtag: #j8fk Fork/Join framework was introduced in Java SE 7 Not supported in EJB container. Parallel Stream uses fork/join framework in its implementation Might not be supported in EJB 3.2 container in EE 7 Some complicated case might not be worked correctly Exception management case JTA with container managed transaction in parallel loop case @Asynchronous method call in parallel loop Differed transaction isolation level method calling Security management etc. 51
- 52. hashtag: #j8fk All Java EE 7 app servers are not supported SE 8 yet, but some simple case are usable with 8. Many limitation are still existing for applying SE to EE 7, but useful new functions must be improve the stage of your enterprise. Anyway, Ready to apply SE 8 for the Java EE! 52
- 54. hashtag: #j8fk 54 September 28 – October 2, 2014 San Francisco Conference: Oracle OpenWorld Session ID: CON2820 Session Title: Case Study of Financial Web System Development and Operations with Oracle WebLogic 12c Conference: JavaOne Sessi on ID: CON2789 Session Title: Java EE 6 adoption in one of the world’s largest online financial systems Come and Join Us!
Editor's Notes
- #53: Java EE 6 is suitable for huge financial systems. And we made new financial architecture with many education and measurements. Make our enterprise future with Java EE.