Category Archives: Java/Java EE

Announcing our new OCP Java 21 1Z0-830 Exam Study Guide!

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OCP 21 Announcement

Jeanne and I thrilled to announce our new Java OCP 21 Study Guide is coming out soon! This is based on the recently announced Oracle 1Z0-830 Exam for Java 21. Preorders starting now!

You can be confident when purchasing our book that it contains everything you need to pass the exam. In fact, we were part of a select group that worked with Oracle to help develop and refine the exam. We even helped kick JDBC off the exam (as it only tested obscure topics), so you have one less thing to study!

What’s new about the 1Z0-830 Java 21 exam? Obviously new features of Java 21 like virtual threads, sequenced collections, and much broader support for pattern matching are covered. What’s the same? The format (50 questions), time (90 minutes), and passing score (68%) are the same as the previous exam.

Jeanne and I are nearly done writing the book so expect this in book stores by the end of the year! We’ll continue to post updates on the OCP 21 Book page.

less than successfully attempting to buy us open 2024 tickets

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Every year I buy two tickets to the US Open. One evening and one day. It’s always been easy. And then there is this year. I half succeeded.

Failing at the American Express Presale

I tried after work (not at 9am) to buy my tickets during the American Express pre-sale. This is when I’ve always bought my tickets. It’s not Comic Con where I have my browser open at the exact moment. By the time i got online, there were no tickets; only “verified resale.” This article suggests had I tried in the morning, I’d have been aggravated and still possibly not have had tickets.

Attempting during regular sale

I know more tickets are released for regular sale. I tried again today after work, the first day of regular sale. I was able to buy an evening ticket for Ashe. However, all the non-resale tickets were single seats and there weren’t a lot.

I think the day tickets are sold out. I say I think because this is the process:

  1. Go to US Open individual tickets page or Ticketmaster tennis page
  2. Click “Join queue”
  3. Verify identity by entering code from text or email
  4. Accept terms of service and that using “All-In” pricing which includes all fees
  5. Observe all tickets are “Verified Resale”
  6. Want to try a different ticket type or date. Start over with step 1. That’s right. You have to authenticate for EVERY search.

I checked online and people who were online at 9am also had problems. I gave up.

[dev nexus 2024] teaching your kid programming from the perspective of a kid

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Speaker: Cassandra Chin

@cassandraonjava

For more, see the 2024 DevNexus Blog Table of Contents

General

  • Steven Chin’s daughter.
  • Worked with coding and YAML in MInecraft
  • Starting teaching kids to program at 14 at conferences
  • Junior in college
  • Creating podcast at internship for younger people (ex college)

Tech diversity

  • 20 years of feale tech panels and still need
  • Women who try AP Comp Sci in high school ten times more like to major it.
  • Black/Latino students seven times more lilkely.
  • Need to provide opportunity
  • Even at 6 year old, kids think computers are more suited to boys. Fifth grade it tapers down so sweet spot for starting.

Kids and code

  • Schools mandate human/world languages, but not coding languages
  • Since schools dont always provide, parents need to
  • Not all screen time is equal
  • Limit youtube
  • Minecraft in middle
  • Best use is learning to code – ex: Scratch
  • Redirect computer use vs taking away

Mistakes for parents to avoid

  • Don’t leave your daughters out. Bring to tech event
  • Computers at home matter – an actual computer, not a tablet. Lets do more than play mobile games
  • Don’t need to be good at math. While Assembly requires math, nobody uses anymore Modern programs use logic, not math
  • Kids dislike math the most followed by foreight language. Computers is third highest. Both things above are types of art.
  • Don’t start with books like Discrete Math
  • Give examples of programmers that they can relate to
  • Don’t start with boring parts like what an array is. Better to start with legos
  • Don’t do the code for the kids. They won’t learn. Never grab mouse or keyboard. Means content too har

Geniuses

  • Anyone can learn to code. Don’t have to be super smart.
  • Kids told programmers are genious do worse than kids who think practies will make them better

Books

  • Phippys AI Friend – comes with online workshop that takes about an hour. Actually use boo as prop
  • Coding for Kids Python
  • GIrls who Code

Helping kids

  • Relate to your kids hobbies. Ex: discuss who built
  • Lego Spike – build robot and do block coding
  • Mbot (Make Block). Uses screws instead of legos. Don’t have to use blocks
  • Hour of Code. Lots of themes
  • Choose age appropriate. Often we choose twoo hard
  • Squishy circuits for 3-9 year olds
  • Raspberry Pi and Arduino – 9-15 years old
  • Groups of two works best. When three kids, the younest will often feel left out
  • Take kids to localy run workshops – ex: confernces, girls who code

My take

I like her responses to Todd’s mini interview a the begining while they dealt with AV issues. Great humor. I liked that she made a joke about her dad being there to tell jokes. I also like “I’m not the daughter of Steven Chin; I have a name”. Great content throughout hether new to the topic or not.

The content resonated well. I gave my best friends five year old (daughter) a toy robot for her fifth birthday. I enjoyed seeing her play. I now have a gift idea for next year!

I also liked the demo from her book!