Revisiting Java in 2021 – Part II
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Revisiting Java in 2021 – Part II
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Re: Revisiting Java in 2021 – Part II
#2This was a great read! Think I might pick up Kotlin
Re: Revisiting Java in 2021 – Part II
#3Thanks for article. Today I learned about Project Leyden, whose primary goal
will be to address the long-term pain points of Java’s slow startup time,
slow time to peak performance, and large footprint.
I just recently started to explore Quarkus, GraalVM to optimize Java microservices for cloud architecture. It's good to know that Java moves into that direction.
https://mail.openjdk.java.net/pipermail/discuss/2020-April/0...
Re: Revisiting Java in 2021 – Part II
#4I'm not a huge fan of Java, but a lot of the improvements being worked on here are promising.
I'm 90% certain I would only really start working on a project if we could use Kotlin just because the ergonomics are vastly superior. If that requires the trial-by-error mentioned ITA to figure out the best practices of various approaches available I think I'd take that trade off.
Re: Revisiting Java in 2021 – Part II
#5> There are ... many well-written books on how to program it effectively
Would anyone be able to recommend a good resource for quickly learning modern Java for experienced programmers that already know, let's say, one of {Python,Javascript} AND one of {Go,Rust,C,C++}, but have zero JVM experience?
(Ideally the resource would also teach some relevant things about the JVM itself rather than the Java language specifically.)
Re: Revisiting Java in 2021 – Part II
#6> There are ... many well-written books on how to program it effectively Would anyone be able to recommend a good resource for quickly learning modern Java for experienced programmers that already know, let's say, one of {Python,Javascript} AND one of {Go,Rust,C,C++}, but have zero JVM experience? (Ideally the resource would also teach some relevant things about the JVM itself rather than the Java language specifical…
I'm currently reading Cay Horstmann's "Core Java for the Impatient" and like it a lot.
Re: Revisiting Java in 2021 – Part II
#7I use Java every day, but we're stuck with Java 8 because of the confusing and frankly scary licensing around later JDKs. I would love to move to 17 but I need something to show to the C-levels that gives them warm and fuzzies around the license. Does such a thing exist?
EDIT: I find it quite depressing that so many want to attack people for being confused around Java licensing. I submit that it is confusing on its face, but moreover insiders seems to understand how confusing it is, too:
https://softwareengineering.stackexchange.com/questions/1194...
https://medium.com/@javachampions/java-is-still-free-2-0-0-6...
Re: Revisiting Java in 2021 – Part II
#8I'm not a huge fan of Java, but a lot of the improvements being worked on here are promising. I'm 90% certain I would only really start working on a project if we could use Kotlin just because the ergonomics are vastly superior. If that requires the trial-by-error mentioned ITA to figure out the best practices of various approaches available I think I'd take that trade off.
Have the ergonomics of Scala improved with version 3?
I‘m planning on revisiting Scala at some point
Re: Revisiting Java in 2021 – Part II
#9I use Java every day, but we're stuck with Java 8 because of the confusing and frankly scary licensing around later JDKs. I would love to move to 17 but I need something to show to the C-levels that gives them warm and fuzzies around the license. Does such a thing exist? EDIT: I find it quite depressing that so many want to attack people for being confused around Java licensing. I submit that it is confusing on its f…
OpenJDK: "Oracle’s free, GPL-licensed, production-ready OpenJDK" I don't know what could be more convincing than an explicit open license.
Re: Revisiting Java in 2021 – Part II
#10> There are ... many well-written books on how to program it effectively Would anyone be able to recommend a good resource for quickly learning modern Java for experienced programmers that already know, let's say, one of {Python,Javascript} AND one of {Go,Rust,C,C++}, but have zero JVM experience? (Ideally the resource would also teach some relevant things about the JVM itself rather than the Java language specifical…
Hmm. Great question. I've always liked Josh Bloch's "Effective Java" because it's targeted toward experienced programmers, and he expressed (correct) opinions about things like immutability. But the book is very old (2001).
One way to get into it is to build something real, first on bare bones (e.g. 'javac Main.java; java Main'), then bare bones Maven, then finally pick a great starting project which itself curates some of the best techniques and libraries currently available for the platform. I am partial to Dropwizard. Do not skip the first two steps though, because if you dive immediately into Dropwizard you'll be disoriented.
I would also suggest avoiding IDEs at the beginning. They hinder more than help at the beginning. One fun thing to do is download the JDK and the docs and source (usually a separate download, alas) and then disconnect your laptop from the internet. See how far you can get with it! Sadly, File IO in Java has always been verbose, but it is probably useful for you to suffer through it.