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Java EE 7 meets Java 8
The document is a presentation by Roberto Cortez discussing the integration of Java EE 7 with Java SE 8, highlighting key features and enhancements such as lambdas, streams, and the date-time API. It outlines the alignment of Java SE and EE versions, the support of major application servers for SE 8, and provides information on parallel streams. The document also includes an agenda featuring code demonstrations and various Java enhancements.
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Java EE 7 meets Java 8
- 1. JavaOne @radcortez#javaee7java8 Java EE 7 meets Java 8 Roberto Cortez Tomitribe
- 2. JavaOne @radcortez#javaee7java8 Who am I? Passionate Developer, Blogger, Youtuber, Speaker, Triber, JUG Leader, Java Champion twi*er: @radcortez blog: h*p://www.radcortez.com youtube: h*p://youtube.com/radcortez mail: radcortez@yahoo.com
- 3. JavaOne @radcortez#javaee7java8 Ques:ons? As soon as you have them!
- 4. JavaOne @radcortez#javaee7java8 Agenda • SE and EE overview • Code Demos • JPA, Date Time API, OpFonal and Streams • JAX-‐RS, OpFonal and Completable Future • Websockets, Streams, CollecFons enhancements • Timers, Concurrency and Method References • Batch, OpFonal and Streams • Future Ideas • Bean ValidaFon, JPA and Method References • Stream Batch
- 5. JavaOne @radcortez#javaee7java8 SE and EE versions alignment J2SE 1.2 1998 J2EE 1.2 1999 J2SE 1.3 2000 J2EE 1.3 2001 J2SE 1.4 2002 J2EE 1.4 2003 Java SE 5 2004 Java EE 5 2006 Java SE 6 2006 Java EE 6 2009 Java SE 7 2011 Java EE 7 2013 Java SE 8 2014 Java EE 8 2017 Java SE 9 2017
- 6. JavaOne @radcortez#javaee7java8 SE and EE versions alignment • EE targets the previous SE version • EE will only align with SE 8 in EE 8 • EE 7 is not targeted to SE 8 Even so, we can improve current EE 7 with SE 8
- 7. JavaOne @radcortez#javaee7java8 EE Applica:on Servers •All major EE servers support SE 8 • Glassfish • Wildfly • TomEE • Weblogic • Websphere Liberty • Some already dropped SE 7 support completely • EE developers are free to use SE 8
- 8. JavaOne @radcortez#javaee7java8 SE 8 give us • Major • Lambdas :) (and Method References) • Streams • Date & Time API • Other • CollecFons enhancements • OpFonal, StringJoiner, CompletableFuture, Comparator, Repeatable AnnotaFons
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- 10. JavaOne @radcortez#javaee7java8 What about Parallel Streams? • They use the common ForkJoinPool • Threads outside of the EE environment • ForkJoinPool uses all available CPU cores • Use at your own risk! • This can help: -‐ Djava.uFl.concurrent.ForkJoinPool.common.parallelism=1 • No parallelism • In the future EE servers might handle parallel streams properly
- 11. JavaOne @radcortez#javaee7java8 Thank you for AKending! QA twi*er: @radcortez blog: h*p://www.radcortez.com youtube: h*p://youtube.com/radcortez mail: radcortez@yahoo.com