[2022 javaone] java first, java always

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Java keynote

For more see the table of contents

George Saab

Java SVP

  • Themes: Performance, Stability, Security, Compatability, Maintainability
  • Balance conservatisim (compatibility/don’t alienate users and innovation (adapting to change/fixing mistakes
  • Six month releases have 5-17 JEPs
  • Amber – developer productivity – readability/writable, less code
  • Leyden – reduce start up time
  • Loom – massiely scale lightweight threaes
  • Panama – Easier I/O with non-Java
  • Valhalla – better memory densitiyt thru value types
  • ZGC – low latency garbage collector on large heaps
  • JMS Discovery Service now free (basic features)
  • Java 17 benchmark 64% faster than Java 8 benchmark
  • Java SE subscription enterprise performance pack – built in drop in replacement for Java 8
  • New shorter URL openjdk.org

Power of Clean Code -Olivier Gaudin

CEO, SonarSource

  • Better predicitiblity and repeatability
  • Empahsis on tooling doesn’t yet help us developer better software.
  • Necessary, but not sufficient. Need great code.
  • 42% dev time spent remediating bd code and tech debt
  • 59% devs believe too much time is spent debugging vs innovating
  • Software rewrites cost 3X more than estiated
  • 90% security incidents from poor coding practices
  • Quick feedback loops are more recent.
  • Developers should own code. For existing code, clean over time. Quality gates ensure new/touched code is clean. After year, should have touched 20% of code. Ater five years, 40-50% clean.
  • Happy devs, happy teams

Perforance – Naren Nayak & Michael Vidstedt

  • Ampere AI instances – built for Oracle cloud
  • 15% faster Spark
  • 20% lower latency for Cassandra
  • 29% higher throughput on enterprise class benchmarks
  • 46% better price performance
  • 16% heap size reduction
  • 47% improvement CPU utilization
  • 40% better UI workload performance
  • 22% rest workload performance
  • Non cloud saw 20-30% improvement on real apps

Graal – Eric Selar

  • Donating GraalVM code to OpenJDK
  • Aligning with Java release model and licensing

Community Sharat Chander

  • Did survey on how long people using Java. A lot were 10+ and 20+. And a good number of 27 years folks!
  • 1.8 million stak overflow qustions
  • 360 user groups
  • 355 Java champions. 50 new this year
  • 1 million Java certs (hit this year)
  • had JUG leaders and Java champions stand. Now I see why he wanted us in the front!
  • Bruno Souza – lifetime achievement award. Nice to see he had his Brazilian flag cape on

My take

I like that Oracle blocked off the back half of the room on entry so people sit further up. And also that they had reserved seating for JUG leaders and Java Champions. Finally, I like that they had closed captioning in the keynote. The content represented a good kickoff. Lots of ground covered and lots of announcements

JavaOne 2022 Table of Contents

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First post-COVID JavaOne! They did a great job of making places for developers to connect, something we’ve been missing. The exhibit hall had a big space for games, sitting and networking. I won a stuffed dolphin in the claw game. And I got to spent *a lot* of time networking/hallway track

Tuesday

Wednesday

Thursday

how to register for an exam using an oracle exam voucher

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Note: We wrote a far more detailed version. See this post

Up until August 2022, everyone used PearsonVUE to register for the exam. Now, you sign up for an exam differently if you are taking it in English. If you are taking it another language (ex: Chinese or Japanese), you still pay thru PearsonVUE (see blog post on sign up process.)

Don’t worry. The exam is still administered through PearsonVUE.

For English exam takers, buy your voucher

  1. Go to the page to buy an exam (ensure you plan to take the exam within 6 months; vouchers expire)
  2. Scroll down to the box for “Oracle Cloud Infrastructure and Technology Exams”. Click “view details” to confirm your exam is still in the list
  3. Click “Add to cart”. It shows up as “Oracle Technology Exam Subscription” (it’s not a subscription though. You still get one attempt
  4. Sign in/pay

Sign up

Per Augusto Moro

After the payment was approved I received an email with order confirmation sent by Oracle with some instructions about how to activate the license key. 
The email contains a link to a page called Oracle Exam Attempt Administration Tool, [img]where I got an activation link to choose and schedule the exam. 
After the exam was beem scheduled, I received a schedule confirmation email with a link to manage my exam schedule and some instructions about the exam day.