The One to Rule Them (Us) All...The Hobbit Java Adventure •I think I'm quite ready for another...
Transcript of The One to Rule Them (Us) All...The Hobbit Java Adventure •I think I'm quite ready for another...
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www.hujak.hr 1
The One to Rule Them (Us) Allwith
dr. sc. Branko Mihaljević & Aleksander Radovanby HUJAK (Hrvatska udruga Java korisnika)
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The Hobbit Java Adventure
• I think I'm quite ready for another adventure! -Bilbo Baggins
• 1991 – Project Stealth
• Green Team brainstorming in Aspen
• James Gosling and Oak interpreter
• 1994 – first Java compiler in Java
• HotJava graphical browser
• 1995 – Oak renamed to Java
• Publicly announced at SunWorld'95www.hujak.hr 2
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Java History Timeline by HUJAK
• The Java history began… ☺
• Our precious! – HUJAK founded in December 2011
• In the meantime HUJAK (co-)organized 15+ conferences
• 6x JavaCro, 4x Javantura, 3x Java Days @HrOUG, 2x WebCamp
www.hujak.hr 3
1995 1998 2001 2004 2007 2010 2013 2016 2019
Java SE 10
201920172014-3-18
Java EE 72013-6-12
HUJAK
2011-12-13
2011-7-28
Java EE 62009-12-10
Java SE 6Mustang
2006-12-11
Java EE 52006-5-11
Java 5J2SE 5.0
Tiger
2004-9-30
J2EE 1.42003-11-11
Java 1.4J2SE 1.4Merlin
2002-2-6
J2EE 1.32001-9-24
Java 1.3J2SE 1.3Kestrel
2000-5-8
J2EE 1.21999-12-12
Java 1.2J2SE 1.2
Playground
1998-12-8
JPE Java
Professional Edition
1998-5
Java 1.1JDK 1.1
1997-2-19
Java 1JDK 1.0
Oak
1996-1-23
Java JDK
Alpha /Beta
1995© 2017, HUJAK
2010-1-27
Java SE 9Java SE 7Dolphin
Java SE 8Spider
Java EE 82017/18
Java publicly announced1995-3-23
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• Hmm, close… but…
• Have you ever heard about the Java Ring? ☺
One Ring to Rule Them All
www.hujak.hr 5
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Original iButton
• iButton by Dallas Seminconductors (Maxim)
• Single-chip trusted microcomputer
• 1-million transistors
• Modular exponentiator for RSA
• 128 kB RAM
• Unalterable realtime clock
• Single electrical contact and ground return (1-Wire)
• Lithium-backed non-volatile static RAM
• Tamper resistance (rapid zeroization)
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Source: An introduction to the Java Ring, JavaWorld, April 1st 1998
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Java-powered iButton
• In 1998 produced Java-powered iButton
• JVM housed in 16mm small and extremely rugged and secure stainless-steel case
• Fully compatible with Java Card 2.0 standard
• Could be attached to any accessory (i.e. key fob, wallet, watch, necklace, bracelet, or finger ring)
• And we've got (our precious)
Java Ring☺
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Source: An introduction to the Java Ring, JavaWorld, April 1st 1998
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The Fellowship of the Java Ring
• Continued growth of Java
• For 22 years
• 10 Million Java Developers
• Many certified
• #1 Development Platform
• In the Cloud and with Microservices
• 15 Billion Devices run Java
• From Enterprise to IoT
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Popularity of Java language
• PYPL index (PopularitY of Programming Language)
• May 2017
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Source: PYPL PopularitY of Programming Language, pypl.github.io, May 2017, © Pierre Carbonnelle
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Java at GitHub/Stack Overflow
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1. JavaScript2. Java3. Python4. PHP5. C#, C++7. CSS, Ruby9. C10. Objective-C
Source: The RedMonk Programming Language Rankings, RedMonk, January 2017, redmonk.com/sogrady/2017/03/17/language-rankings-1-17/
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Java Survey @ JavaCro17
• We presented many surveys in the past
• But one question was always there…
What about Croatia?• And now… for the first time we have our own
Java survey ☺• 122 JavaCro attendees responded
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Survey – Experience
• Years of experience in software development?
• Gender?
www.hujak.hr 12
0-1y1,6%
1-2y17,2%
3-4y23,8%
5-9y25,4%
10-14y19,7%
15-19y5,7% 20+y
6,6%
0,8%
84,4%
14,8%
N/A
Man
Woman
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Survey – Education Level
• What is your education level?
www.hujak.hr 13
High-school9,0%
Self-taught1,6%
BS17,2%
MS69,7%
PhD2,5%
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13,1%
28,7%
18,9%
13,1%
11,5%
1,6%
2,5%
4,9%
5,7%
0% 5% 10% 15% 20% 25% 30% 35%
Junior Developer
Developer
Senior Developer
Software Architect
Team Leader
Software Consultant
Project Manager
C-Level Manager
Other
Survey – Job Position
Name (titleor best description)
of job position?
www.hujak.hr 14
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Survey – About Company
• Company Size • Number of Developers
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Enterprise / large36,1%
Midsize41,8%
Small20,5%
Startup0,8%
Freeleancer0,8% 1-5
9,3%
6-1014,4%
11-2011,0%
21-5025,4%
51-1009,3%
100+30,5%
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87,7%
35,2%
29,5%
75,4%
54,1%
14,8%
0% 20% 40% 60% 80% 100%
Web Apps
Desktop Apps
Mobile Apps
Backend
Frontend
Libraries
Application (Project) Types
Development Project Types
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The Two Towers (Platforms)
• Java SE – present and future
• Java EE – present and future
• Other Languages
• Web Frameworks
• Libraries
• App Servers
• JavaScript Frameworks
www.hujak.hr 17
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Survey – Java SE versions
• Java SE platform versions you use in projects
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40,2%
72,1%
85,2%
0,8%
0% 20% 40% 60% 80% 100%
Java 6
Java 7
Java 8
Java 9
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Survey – Java SE versions
• In Production • In Development
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Java 840,2%
Java 741,8%
Java 618,0%
Java 868,6%
Java 724,8%
Java 65,8%
Java 90,8%
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Survey – Java 8 Interest
• Parts of Java 8 considered most interesting
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74,2%
61,7%
22,5%
35,0%
-10% 10% 30% 50% 70% 90%
Lambdas
Stream API
Optional return types
Date and Time API
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Looking Forward to Java 9
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7,0%
20,0%
14,8%
33,9%
29,6%
27,8%
36,5%
69,6%
Better Javadoc support
Better logging
New JVM options
Better garbage collection
Better diagnostics
Developer convenience
Modularity
Better performance
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Latest News
• Java SE 8u131 released April 18, 2017
• Next Critical Patch Update is in July 18, 2017
• JDK 9 – General Availability July 27, 2017
• Early Access Release Build 168
• IDE support
• Modularity in Java 9 (or not?)
• Concerns regarding Jigsaw – Red Hat, Maven, et al.
• Articles by Scott Stark, Mike Hearn, Gabriela Motroc…
• IBM and Red Hat voted "no" to Jigsaw
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Survey – Java EE
• Java EE platform versions you use in projects
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28,3%
10,0%
40,0%
50,0%
0% 20% 40% 60%
None
Java EE 5
Java EE 6
Java EE 7
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Survey – Java EE versions
• In Production • In Development
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Java EE 7
41,7%
Java EE 6
29,2%
Java EE 51,7%
None25,8% Java
EE 742,9%
Java EE 6
27,7%
Java EE 51,7%
None26,1%
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8,6%
13,3%
18,1%
21,0%
24,8%
26,7%
26,7%
43,8%
55,2%
0% 20% 40% 60%
Secret Management and Storage
Service Health and Check
Configuration API
Reactive Style
OAuth and OpenID
JSON-B and JSON-P
Eventing and Async Event Model
HTTP/2 and Servlet 4.0
REST and JAX-RS 2.1
Looking Forward to Java EE 8
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1,9%
2,9%
1,9%
5,8%
67,3%
11,5%
19,2%
13,5%
23,1%
2,9%
1,0%
5,8%
1,0%
0,0%
15,4%
8,7%
Objective-C
Swift
Ruby
Perl
JavaScript
PHP
C#
C++
Python
Jython
Xtend
Kotlin
Clojure
Ceylon
Groovy
Scala
Survey – Other Languages
www.hujak.hr 26
Actively using
other languages lately?
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Popularity of JVM Languages
• JVM Language Ranking from StackOverkill
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Source: JVM Language Ranking, www.stackoverkill.com/ranking/jvm-langs, StackOverkill, May 2017
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Survey – Web Frameworks
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1,8%
4,4%
0,0%
5,3%
3,5%
7,9%
12,3%
49,1%
24,6%
70,2%
Dropwizard
Grails
Wicket
Struts
Play framework
GWT
Vaadin
Spring Boot
JSF
Spring MVC
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Web Frameworks
• Web Frameworks Index Top 10 by RebelLabs(ZeroTurnaround)
• Public data from StackOverflow, LinkedIn, GitHub, and Google search
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Survey – Libraries
• Libraries used commonly
www.hujak.hr 30
63,0%
75,6%
78,2%
63,9%
Spring libraries
Apache commons
Logging
Testing
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Survey – App Servers
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0,8%
2,5%
9,9%
18,2%
33,1%
24,0%
13,2%
12,4%
75,2%
8,3%
0% 20% 40% 60% 80%
TomEE
Payara
Jetty
JBoss
WebSphere
WildFly
GlassFish
WebLogic
Tomcat
Going Serverless
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Survey – JavaScript Frameworks
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0,9%
0,9%
13,4%
18,8%
58,9%
4,5%
23,2%
Backbone
Ember
React
Node.js
Angular
Our own
None
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The Return of the Java King
• What about Tooling?
• IDEs
• Build tools
• CI
• Version Control
• Profilers
• APMs
• Virtualizations
• Containers
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Survey – IDEs
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2,5%
8,2%
7,4%
14,8%
54,1%
73,0%
0% 20% 40% 60% 80%
Other
STS
Sublime
NetBeans
IntelliJ IDEA
Eclipse
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Survey – Build Tools
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4,3%
23,3%
25,2%
87,9%
Other
Ant
Gradle
Maven
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Survey – Continuous Integration
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3,1%
2,0%
8,2%
3,1%
2,0%
3,1%
12,2%
79,6%
Other
TFS
RTC
TravisCI
Hudson
TeamCity
Bamboo
Jenkins
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Survey – Version Control
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0,8%
1,7%
5,0%
11,6%
11,6%
20,7%
81,8%
Other
TFS
RTC
CVS
Mercurial
Subversion
Git
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Survey – Profilers
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2,4%
4,9%
11,0%
17,1%
18,3%
23,2%
47,6%
Other
YourKit
NetBeans Profiler
XRebel
JProfiler
Java Mission Control
VisualVM
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Survey – APMs
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6,0%
10,0%
10,0%
26,0%
34,0%
Stackify Retrace
TraceView (SolarWinds)
Dynatrace (Compuware)
AppDynamics
New Relic
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Virtualization and Containers
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53,6%
4,8%
1,2%
11,9%
60,7%
VMWare
AWS ECS
Mesos
Kubernetes
Docker
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Survey – Microservices
• Using microservices? – 32,5% Yes
• If yes, is using microservices making development easier?
• 47,9% Yes, 38% Same as before
• If no, do you intend to use microservices in the future?
• 58,3% Yes, 34% I don't know
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Survey – Agile
• Using agile methodologies? – 74,8% Yes
• If not, do you intend to? – 78,5% Yes
• If yes, what agile practices?
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24,0%
36,5%
62,5%
59,4%
10,4%
Well written specifications
Kanban board
Daily standups
Tasks with sprints
Certified agile
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JavaCro'17 Survey – Conclusion
• Right now use Java 8 and Java EE 7• New features – wait for Java 9 and Java EE 8 • Try new languages – Scala or Groovy• "Safe" choices:
• Frameworks – Spring MVC & Spring Boot• App servers – Tomcat• IDEs – Eclipse or IDEA or (NetBeans)• Build tools – Maven or (Gradle)• CI – Jenkins• Version control – Git
• Try microservices
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Open Source & Volunteering
• Involved in open source? – 14,5% Yes, 22,2% intends to
• If yes, how many projects? – 62,1% only 1• Others from 2 to 6 projects, only one more than 10
• Sling, Samza, Kubernetes, Enmasse, PanBI, GWT, Material Design, SportChef, Moodini…
• Volunteering? – 10,1% Yes• If yes, where? – HUJAK, Agile Croatia, Openblend,
Programerko, JUG.ch, HackerGarten.net, OpenHeart, Biciklisti, ZAMAH…
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Where Else to Learn to Code
• Popular online learning resources:
• freeCodeCamp
• CodeAcademy
• Coursera
• Udemy
• KhanAcademy
• PluralSight
• EdX
• Udacity
• OdinProject
• CodeWars
• DevTips
• TreeHouse
• The New Boston
• Lynda.com
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Source: 2016 New Coder Survey, freeCodeCamp
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IT/CS education in Croatia
• Where to study IT/CS in Croatia?• 15 cities: Čakovec, Dubrovnik, Krapina, Križevci, Osijek,
Pula, Rijeka, Sisak, Split, Šibenik, Varaždin, Velika Gorica, Zabok, Zagreb, Zaprešić
• 33 different institutions including• 6 public/state universities• 13 private colleges
• 80+ IT/CS/SE/CE programs• Undergraduate (3-4 years)• Graduate level (1-2 years)• Doctoral (PhD) level• Specialist level
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Java Conferences in Croatia
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Conference Location Date Sessions Tracks Attendees Countries
JavaCro'17 Rovinj 10.-12.5.2017. 50 5 280 15
Javantura v4 Zagreb 11.2.2017. 27 3 300 -
HrOUG 2016 Rovinj 18.-22.10.2016. 7 (od 96) 1 (od 9) 450 11
JavaCro'16 Rovinj 18.-20.5.2016. 56 5 260 15
Javantura v3 Zagreb 20.2.2016. 23 - 300 -
JavaCro'15 Rovinj 10.-12.5.2015. 46 5 200 11
Javantura v2 Zagreb 15.11.2014. 16 - 160 -
JavaCro'14 Poreč 11.-13.5.2014. 50 5 220 11
Javantura v1 Zagreb 22.2.2014. 12 - 150 -
WebCamp 2013 Zagreb 26.10.2013. 24 - 600 -
HrOUG 2013 Rovinj 15.-19.10.2013. 11 (od 90) 1 (od 7) 370 12
JavaCro'13 Tuhelj 3.-5.6.2013. 50 5 200 -
HrOUG 2012 Rovinj 16.-20.10.2012. 11 (od 114) 1 (od 7) 370 13
WebCamp 2012 Zagreb 24.11.2012. 24 - -
Java 2012 Tuhelj 29.-30.5.2012. 34 7 170 -
HrOUG 2011 Rovinj 18.-22.10.2011. 12 (od 96) 1 (od 9) 460 11
We (co-)organized 16 conferences !!! ☺
#Javantura #JavaCro #HrOUG #proud
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And we are growing ☺
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JavaCro and Javantura conferences
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Conferences HUJAK supports
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45+ company members
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Partners & Friends
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Prizes and Giveaways
• Would you like to receive a prize for answering so many questions? :-) – only one No ☺
• Manning offered us 40% discount on all bookswww.manning.com use code: ctwjavacro17
• And now… prizes and giveaways!!!www.hujak.hr 52
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Thank you & greetingsfrom HUJAK!
• Web page hujak.hr• www.hujak.hr
• LinkedIn group HUJAK• www.linkedin.com/groups?gid=4320174
• Facebook group page HUJAK.hr• www.facebook.com/HUJAK.hr
• Twitter profile @HUJAK_hr• twitter.com/HUJAK_hr
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