From what I've seen Oracle and Openjdk are the best ones. People say Openjdk is the best one I keep seeing hate on Oracle. I don't know if I'm looking at the right thing rn thats why I'm asking. I'm on openjdk.org and it looks like a scam/virus. The site is so poorly built it can't possibly be better than Oracle. Should I get openjdk? How do I get it? Also, side note. Which IDE should I get? I heard eclipse and intellij are the best ones but idk which one to get.
#Which JDK should I get?
peak tinsel
green roseBOT
<@&987246527741304832> please have a look, thanks.
green roseBOT
From what I've seen Oracle and Openjdk are the best ones. People say Openjdk is ...
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t could be confusing to choose between Oracle JDK and OpenJDK, as both are popular choices for Java Development Kits (JDKs). Here are some factors to consider:
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Oracle JDK: Historically, Oracle JDK was the most commonly used JDK for Java development. It provides long-term support (LTS) versions with regular updates and bug fixes. However, starting from Java 11, Oracle changed its licensing model, and commercial support is now available only through a paid subscription.
-
OpenJDK: OpenJDK is an open-source implementation of the Java Development Kit. It is free to use and provides regular updates and bug fixes similar to Oracle JDK. Many developers prefer OpenJDK due to its open-source nature and community-driven development process.
When deciding which one to choose, consider the following:
-
Licensing: If you require commercial support or are developing software for commercial purposes, you may need to consider Oracle JDK's licensing terms. For most general-purpose applications or open-source projects, OpenJDK should suffice.
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Compatibility: Both Oracle JDK and OpenJDK aim for compatibility with the Java SE specifications. However, some minor differences might exist due to separate development processes.
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Community Support: OpenJDK benefits from a large community of contributors who actively maintain and improve it. This can result in faster bug fixes and enhancements compared to Oracle JDK.
In summary, if you are looking for a free and open-source option with good community support, OpenJDK is a suitable choice. However, if you require specific features or commercial support from Oracle, you might consider using their JDK version.
It's always recommended to check the official documentation and consult with your team or project requirements before making a final decision on which JDK to use.
cunning quest
From what I've seen Oracle and Openjdk are the best ones. People say Openjdk is ...
From what I've seen Oracle and Openjdk are the best ones.
Just use OpenJDK https://adoptium.net/
I keep seeing hate on Oracle
...you know that java is made by oracle right?
I'm on openjdk.org and it looks like a scam/virus. The site is so poorly built
yes that's normal, it's because it is for openjdk development, not clients aka us
And use adoptium, it's where you should get it
it can't possibly be better than Oracle
Do you know the difference? It's licensing and additionnal services, that's all, it doesn't matter where you get it
Also, side note. Which IDE should I get? I heard eclipse and intellij are the best ones but idk which one to get.
IntelliJ, period
peak tinsel
> From what I've seen Oracle and Openjdk are the best ones.
Just use OpenJDK <ht...
on that link do i click Latest LTS Release? then its just gonna download?
also why is intellij better than eclipse? Does it have something eclipse doesnt
cunning quest
on that link do i click Latest LTS Release? then its just gonna download?
It's the default download, you can click on Other platform and versions if you want more control
cunning quest
also why is intellij better than eclipse? Does it have something eclipse doesnt
It's better in pretty much every aspect except performances I would say, it's also way more used
Ah, and IntelliJ also has a paid version but isn't required
peak tinsel
can you send me the link where i download intellij? Ive looked for it but i cant find it anywhere
cunning quest
can you send me the link where i download intellij? Ive looked for it but i cant...
first result on google https://www.jetbrains.com/idea/download/?section=windows
peak tinsel
alright that helps
thanks a lot
appreciate it
im doing the jdk rn. do i just keep clicking next to download it the way it does it default or is there anythign else i need to do?
there are two X's next to set java home variables and javasoft registry keys
cunning quest
im doing the jdk rn. do i just keep clicking next to download it the way it does...
by default on windows, it gives you an msi
peak tinsel
idk what that means
i just clicked the big button
to download
the Latest LTS Release
and then it opened the setup wizard
peak tinsel
i'm just going along with it but there are two red X's which usually isnt good
the first page
after i click next in the home screen thing of the setup wizard
cunning quest
i'm just going along with it but there are two red X's which usually isnt good
wdym are you talking about the window where you have to check what you want ? what's the problem ?
peak tinsel
it says "Set JAVA_HOME variables" and "JavaSoft (Oracle) registry keys" and theres two red x's
peak tinsel
wdym are you talking about the window where you have to check what you want ? wh...
can i send a picture?
it says Select the way you want features to be installed
It's the Custom Setup
It says Set Java Home variable and javasoft registry keys wont be available
the red x means the feature wont be available
torpid parcel
can i send a picture?
ye better if you do that
peak tinsel
i had problems in the past with python and PATH and variables and stuff so i just wanna make sure im doing things properly with Java
peak tinsel
what do they do
and why arent they on by default
for the bottom one it says
"Overwrites the reg keys HKLM\software...\javapath' does not work. You need to reinstall it to recreate these registry keys"
what doesnt work?
and whats an environment variable
torpid parcel
and whats an environment variable
basically when you run java command anywhere, the system knows what it means.
peak tinsel
basically when you run java command anywhere, the system knows what it means.
so its good? Why wasnt that on by default?
torpid parcel
Add to path is on by default ?, i haven't used this installer so im not familiar that much.
peak tinsel
oh no
not that one
on the pic i sent
the 2 bottom ones arent on by default
what are those ones
cunning quest
"Overwrites the reg keys HKLM\software\...\javapath' does not work. You need to ...
some software may use registry keys
it's not important, you don't need to check it if you don't want
peak tinsel
some software may use registry keys
what does that mean?
torpid parcel
JAVA_HOME is just a variable that holds address of your jdk installation folder
peak tinsel
it's not important, you don't need to check it if you don't want
am i going to need it?
cunning quest
am i going to need it?
probably not
peak tinsel
JAVA_HOME is just a variable that holds address of your jdk installation folder
do i need that?
so do i just keep it the way it is default?
the two bottom ones unchecked?
or do i check the java home variables
also whats Eclipse Temurin? Is it the name of the software im installing or the IDE?
cunning quest
what does that mean?
windows use registry to store some config, it's annoying to use or modify
cunning quest
or do i check the java home variables
check home yes
cunning quest
also whats Eclipse Temurin? Is it the name of the software im installing or the ...
it's the name of the vendor of the JDK here
peak tinsel
i dont have any
peak tinsel
i did a factory reset a few days ago and didnt install anything other than chrome and discord and a few random stuff
oh
peak tinsel
nope i dont have anything
cunning quest
right
peak tinsel
only thing that shows up is the answers from the web
cunning quest
when installed
peak tinsel
like it shows bing and stuff
peak tinsel
in the cmd i type "java"?
torpid parcel
also don't be too stressed out with setting up path (environment variables), you can change that anytime if you wish to later. But i get it's a bit tricky to set up early on.
cunning quest
in the cmd i type "java"?
where java
peak tinsel
also don't be too stressed out with setting up path (environment variables), you...
but for now do i check it or uncheck
torpid parcel
do what alath suggested
peak tinsel
`where java`
could not find files for the given pattern(s)
peak tinsel
alright
ok i got it now im gonna do intellij
for the Choose Install Location do i just keep it at default?
and for the Installation Options theres a bunch of stuff
cunning quest
for the Choose Install Location do i just keep it at default?
yes
torpid parcel
for the Choose Install Location do i just keep it at default?
for the most part defaults are good, unless you are limited on space or something.
cunning quest
I would check everything excpt associations
peak tinsel
first 3 meaning create desktop shortcut, update PATH, and update context menu
alright
what exactly is this PATH thing that shows up everywhere
torpid parcel
just context for you to run commands basically, like i mentioned for java
cunning quest
first 3 meaning create desktop shortcut, update PATH, and update context menu
- Create Desktop Shortcut is so you can open it from windows menu
- Update Context Menu is so you can open a folder with IntelliJ by right clicking
- Path is so you have access to the command, very important for java, since you need it to run java, not really important for intellij, since you won't open it often like this, but still usefull
And you can select the associations if you want
peak tinsel
what are associations?
cunning quest
what are associations?
when you double click a file
peak tinsel
sorry if im asking a bunch of questions haha im paranoid bc of what happened with python i had to delete python and reset everything
torpid parcel
anytime you launch files with these extentions, intellij will be used as default program.
peak tinsel
ohhh i see
its like those default things on your computer that you set like to open chrome default for x type of file
cunning quest
sorry if im asking a bunch of questions haha im paranoid bc of what happened wit...
what happened with python ?
peak tinsel
what happened with python ?
i installed it but i set it up wrong and my code wouldnt run properly and i had to delete it and lose the code and re do the installation
cunning quest
its like those default things on your computer that you set like to open chrome ...
yes, when you select open with by default, that's the file association
peak tinsel
what happened with python ?
it was my first experience with coding so not very fun
what's Choose Start Menu Folder
"Select the start menu folder in which you would like to create the program's shortcuts. You can also enter a name to create a new folder"
cunning quest
show a screenshot please
peak tinsel
ohhh i get it haha
self explanatory
it just asks me to select one of the folders i have on my pc to create the shortcuts
peak tinsel
by default it made it so that it created a folder called JetBrains to create any shortcuts
i just left it at that
or else it would create shortcuts and put it in random folders i have
which would just be unecessarily disorganized
ok i downloaded it
is there anything i need to do now?
to link the jdk to the ide or something
idk
peak tinsel
what does that do?
cunning quest
print the content of JAVA_HOME
peak tinsel
that gives me a path to jdk-21.0.1.12-hotspot\
peak tinsel
its the same path as the one to java.exe except after it goes hotspot\bin\java.exe
cunning quest
now try to create a project with intellij
also note that you actually don't need to install java to use intellij
it already comes with a few versions of java
peak tinsel
oh
haha
well
now i have the newest one
and the other development tools like the debugger and stuff which i dont think it comes with
but whatever
im creating a project rn
whats Git repository
cunning quest
and the other development tools like the debugger and stuff which i dont think i...
wdym
torpid parcel
whats Git repository
nothing you need to worry about atm, could ignore for now.
cunning quest
like the jdk comes with a bunch of tools doesn tit
the debugger is something your IDE has
peak tinsel
oh
cunning quest
whats Git repository
something very important you will learn later
cunning quest
it already has a JDK yes
you could have simply just installed intellij
but if you did that
you wouldn't be able to use java outside of intellij
peak tinsel
ohhh i see
i created a project
im on it right now
now what
do i run it and its gonna work?
cunning quest
try yes
cunning quest
show the icons
peak tinsel
they're both play buttons
Shift F10 one is green on top of my screen
and the Alt 4 one is in the left corner
peak tinsel
alright
I think the green one only runs the Main class and the other one runs the whole thing
cunning quest
where is the right one ?
peak tinsel
bottom left corner
cunning quest
show a screenshot of the whole thing please
cunning quest
there are 3 run buttons here
the two at the left
which will specifically run the main class/method
peak tinsel
yeah
cunning quest
the top right which will guess what you want to run (actually will just run the main class/last thing you ran)
and also, at the right of the run button, there is a button looking like a bug
it's the debug button
peak tinsel
yeah
i dont know how to use a debugger
i never used one
i used to use print statements
cunning quest
I advise you to use it instead of the run button when possible
peak tinsel
what does it do?
i just did it and it didnt do anything
if i run something and thers an error its gonan say "syntax error" or something and the line
so what does the debugger do different
cunning quest
i never used one
by clicking on the line number, you can set a breakpoint, and when java reaches it, it will pause, allowing you check the content of the variables, and allowing you to run it line by line
cunning quest
also, does it work, do you have an hello world ?
cunning quest
right
peak tinsel
and the for loop works too
cunning quest
note that once a breakpoint is reached, and you want to advance line by line, you can use a button at the bottem left
peak tinsel
how is that useful tho?
like i can make the program pause at a certain line
what does that help with
cunning quest
it helps you to understand what is happening
it's not always easy to just look at the code and completly understand what it does
even less when there is a bug and you have no idea where it is, then what do you do ? do you put prints everywhere, or do you use the debugger ?
cunning quest
what if there isn't any error ?
cunning quest
and what if the error is too vague to help you ?
peak tinsel
debugger probably helps
cunning quest
it's not probably
pretty sure you will love using it in the first assignment you will have
and in all the following assignments
peak tinsel
i see
hold up
i have one random question that i dont really get
i used to use vscode for python
people say its bad for java
cunning quest
indeed
peak tinsel
i headr somewhere that its a text editor
not an ide
what exactly is vscode
like it runs coe
code
is that not what an ide does
peak tinsel
i hated extensions
theyre so complicated
i only ever used the ones made by microsoft because they all worked the same way
cunning quest
Java IDEs like intellij are so much powerful, that even VSCode with extensions is nowhere close
and if you don't use extensions at the first place
cunning quest
using vscode is probably the worst idea
peak tinsel
my friend who got me into programming only uses vscode thats why its the first one i tried
peak tinsel
yeah but like
cunning quest
vscode is good with everything, but is best for nothing
cunning quest
Integrated Development Environment
cunning quest
what does intellij have that vscode doesnt
depends of how many extensions you add
peak tinsel
with 0 extensions
cunning quest
It probably won't even have auto completion then
peak tinsel
nope
cunning quest
which is like, bare minimum
also note that java has a repl
it's the command jshell
peak tinsel
python does too right
cunning quest
yes
peak tinsel
its like where you write code or commands while running the program
cunning quest
it's where you can dynamically execute whatever you enter
try running jshell command
then enter 2+2
peak tinsel
how do i open the shell
peak tinsel
ohh on my computer not intellij
cunning quest
take a screenshot
peak tinsel
hold up
i type jshell
it says
| Welcome to JShell -- Version 21.0.1
| For an introduction type: /help intro
then i say 2+2
cunning quest
right
peak tinsel
and it says
cunning quest
so you launched jshell
peak tinsel
$1 ==> 4
peak tinsel
yeah
cunning quest
you can enter System.out.println("hello")
peak tinsel
i thought id have to type in java code
cunning quest
like regular java
cunning quest
i thought id have to type in java code
it's java
cunning quest
Also note that this uses jshell too https://dev.java/playground/
so if you just want to enter some code online
peak tinsel
i have openjdk
does every jdk have the same java
like is java one thing
and then each jdk has like other stuff included
or is the java slightly different in each jdk
cunning quest
it's the same
like I said earlier
only difference is license and additional services
cunning quest
and different license
cunning quest
This is the source code of java btw https://github.com/openjdk/jdk
every vendor just build it from here, stick a license they like and distribute it
peak tinsel
whats a lisence
branding?
like i can just take that put my name on it and distribute it?
cunning quest
It's basically a permit to use something, under certain terms
peak tinsel
ohhh
cunning quest
like i can just take that put my name on it and distribute it?
it depends of what their license allows
peak tinsel
i see
like openjdk might let me create something and sell it but oracle might not
stuff like that
cunning quest
yea
warm jewel
like openjdk might let me create something and sell it but oracle might not
both OracleJDK & OpenJDK are maintained by Oracle, and since Java 17, both allow personal & commercial use for free under NFTC
here's a link to the current license for OracleJDK: https://www.oracle.com/downloads/licenses/no-fee-license.html
here's a link to the FAQ, which mentions that NFTC is free for both personal & commercial: https://www.oracle.com/java/technologies/javase/jdk-faqs.html (go to "What is the Oracle NFTC license")
it permits free use for all users – even commercial and production use