How to download libraries?

[floral lantern]

⚠️ Warning: I'm an an extreme noob to java
I have a couple years under my belt in python so please excuse any incorrect lingo I may use, etc. etc.
working on a college project which requires java, and I used a python to java translator (shamelessely) to convert an old personal project for re-purposing
the program begins with:```java
import org.json.simple.JSONArray;
import org.json.simple.JSONObject;
import org.json.simple.parser.JSONParser;
import org.json.simple.parser.ParseException;

tryna figure out how to get them since I'm using intellij's idea atm, although the program worked flawlesely (without any lib downloads) on repl.it
tried researching and I've gone down some maven repository rabbithole
I have no clue what I'm doing, please help me, I am desperate
thanks in advance 🙏

[gaunt ridge]

<@&987246452180930620> please have a look, thanks.

Here is an AI assisted attempt to answer your question 🤖. Maybe it helps! In any case, a human is on the way 👍. To continue talking to the AI, you can use </chatgpt:1108714622413963314>.

To download libraries in Java, you typically use a build tool like Maven or Gradle. These build tools manage dependencies and automatically download the required libraries for your project.

Here's a step-by-step guide to downloading libraries using Maven:

1. Install Maven: If you haven't already, download and install Maven from the Apache Maven website (https://maven.apache.org/download.cgi).

2. Create a new Maven project: Open your command prompt or terminal and navigate to the directory where you want to create your project. Run the following command to create a new Maven project:

   mvn archetype:generate -DgroupId=com.example -DartifactId=myproject

3. Navigate to the project directory: Move into the newly created project directory using the following command:

   cd myproject

4. Open the pom.xml file: The pom.xml file is where you define your project's dependencies. Open it in a text editor.

5. Add dependencies: Inside the <dependencies> tag in pom.xml, add the dependencies you want to download. For example, if you want to use the Apache Commons Lang library, add this code:

   <dependency>
       <groupId>org.apache.commons</groupId>
       <artifactId>commons-lang3</artifactId>
       <version>3.12.0</version>
   </dependency>

6. Save and close pom.xml.

7. Download dependencies: Run the following command in your project directory to download all dependencies specified in pom.xml:

   mvn dependency:resolve

8. Build your project: Once all dependencies are downloaded, run this command to build your project:

   mvn package

9. Libraries are downloaded! The libraries specified in pom.xml will be downloaded into your local repository (usually located at ~/.m2/repository).

That's it! You have successfully downloaded libraries using Maven. You can now use these libraries in your Java project.

Note: The process is similar with Gradle, but instead of a pom.xml file, you'll have a build.gradle file where you define dependencies.

[floral lantern]

wtf

that is so cool?!

yeah not too sure if that's a useful answer?

I'd preferably avoid downloading any more than I already have, is there anywhere I can simply pull the dependencies and throw them in my project?

[soft cradle]

Imports are the same as what you're familiar with in python

The answer above is correct, since you're referencing org.json which is an external library you'll need to download it

Maven is like pip

[lament moat]

is it? isnt it also adds dependency automatically in python?

ah pip right

[floral lantern]

ahhhh

[floral lantern]

nah mate, gotta use pip for anything that you haven't previously gotten

[soft cradle]

There similar in the sense they'll download the libraries for you but there are some differences

But know you should use maven to manage your dependencies

(or gradle if you want something a bit easier)

[floral lantern]

I mean if maven is the standard, I'll try find my way around it

[soft cradle]

If you're using intellij, when you create a project, during the setup, they'll be options to choose maven or gradle

[soft cradle]

They're actually both the "standard" now

So you should learn both imo if you're investing in Java development

[floral lantern]

started my repo in college, pulled it at home, so I don't think I got that? (or I just skipped passed it ;-;)

[soft cradle]

Intellij is the best code editor

Especially for Java

If you use it, it'll handle everything you'd typically need

Right out of the box

And it has amazing tooling built in

It's also a beautiful ide

[floral lantern]

not me using vsc for the past 6 years

I appreciate it, it's a great program in all honesty, but just too much for me

[soft cradle]

np

If you've been using it for 6 years then you'll be fine in vsc

But make sure to download all the right plugins or whatever you vsc guys need to do to make your glorified notepad work

[ocean rivet]

@floral lantern if you're willing, I can get you set up with my tool for this

[floral lantern]

I've never bothered with vsc plugins lol

[floral lantern]

and yes, that is exactly what I use it as

[soft cradle]

Have you heard the term "bs code" lol

A nickname for vsc

[floral lantern]

no but I see where you're coming from 🤣

[floral lantern]

oh?

[soft cradle]

I wouldn't recommend being emcues lab rat

[ocean rivet]

well, I wrote a tool that gets you dependencies

[floral lantern]

I mean

[ocean rivet]

I treat my lab rats well!

they always come out better in the end

[floral lantern]

if it doesn't break my barely functioning system

and it works

[ocean rivet]

cool

[floral lantern]

I'm willing to be your lab rat lmao

[soft cradle]

That you do, you'll be in capable hands @floral lantern

[ocean rivet]

what OS are you using?

[floral lantern]

windows

and no, you can't judge me

[soft cradle]

Windows is the best os dw

[floral lantern]

he gets it

[soft cradle]

I'll fight any Linux or Mac nerd

Anyways gl you both

[floral lantern]

java community better than I thought

[floral lantern]

appreciate it

thank you for explaining what maven is, their explanation on the site is so bad 😭

[soft cradle]

"pip"

[ocean rivet]

okay download this

https://github.com/bowbahdoe/jresolve-cli/actions/runs/7426293336

[floral lantern]

https://tenor.com/view/moist-cr1tikal-penguinz0-charlie-rage-funny-gif-18760167

[ocean rivet]

jresolve-windows-latest.exe

[floral lantern]

just got 13 windows defender alerts

hyped!

[hazy oyster]

https://tenor.com/view/knappschaft-hab-ich-gut-gemacht-self-love-gut-gemacht-well-done-gif-17260612

[floral lantern]

alr I got it

only called jresolve.exe tho

[ocean rivet]

thats good

[floral lantern]

the zip was called jresolve-windows-latest.exe.zip

[floral lantern]

okok

[ocean rivet]

open your terminal

[floral lantern]

yep

[hazy oyster]

use maven

[floral lantern]

I'm being emcue's labrat

sorry

[ocean rivet]

and run it followed by pkg:maven/com.googlecode.json-simple/[email protected]

[floral lantern]

that'll be my second choice if this doesn't work (pls work)

[ocean rivet]

jresolve.exe pkg:maven/com.googlecode.json-simple/[email protected]

[floral lantern]

right

where is this going to be downloaded

[hazy oyster]

-_-

[ocean rivet]

when you run the command, it will output all the paths where it is downloaded. It will be a global folder on your system

[floral lantern]

C:\Users\gytis\.jresolve\cache\https\repo1.maven.org\maven2\org\hamcrest\hamcrest-core\1.1\hamcrest-core-1.1.jar;C:\Users\gytis\.jresolve\cache\https\repo1.maven.org\maven2\org\easymock\easymock\2.2\easymock-2.2.jar;C:\Users\gytis\.jresolve\cache\https\repo1.maven.org\maven2\jmock\jmock\1.1.0\jmock-1.1.0.jar;C:\Users\gytis\.jresolve\cache\https\repo1.maven.org\maven2\junit\junit\4.10\junit-4.10.jar;C:\Users\gytis\.jresolve\cache\https\repo1.maven.org\maven2\com\googlecode\json-simple\json-simple\1.1.1\json-simple-1.1.1.jar

[ocean rivet]

yep - so thats all of the dependencies that json-simple wants

idk why it wants ...junit? but okay whatever

[floral lantern]

C:\Users\gytis\.jresolve\cache\https\repo1.maven.org\maven2\org\hamcrest\hamcrest-core\1.1\hamcrest-core-1.1.jar;
C:\Users\gytis\.jresolve\cache\https\repo1.maven.org\maven2\org\easymock\easymock\2.2\easymock-2.2.jar;
C:\Users\gytis\.jresolve\cache\https\repo1.maven.org\maven2\jmock\jmock\1.1.0\jmock-1.1.0.jar;
C:\Users\gytis\.jresolve\cache\https\repo1.maven.org\maven2\junit\junit\4.10\junit-4.10.jar;
C:\Users\gytis\.jresolve\cache\https\repo1.maven.org\maven2\com\googlecode\json-simple\json-simple\1.1.1\json-simple-1.1.1.jar

[ocean rivet]

so now you can do

[floral lantern]

whatever makes my ai python to java code work 😭

[ocean rivet]

jresolve.exe --output-directory libraries pkg:maven/com.googlecode.json-simple/[email protected]

and that will put all the dependencies into that folder

then you just need to compile with

javac --module-path libraries --add-modules ALL-MODULE-PATH  ...

and run with

java --module-path libraries --add-modules ALL-MODULE-PATH  ...

[floral lantern]

assuming the elipsis is to be replaced with my desired path for all of the libraries?

[ocean rivet]

no that is represented by "Libraries" in this command

jresolve.exe --output-directory libraries pkg:maven/com.googlecode.json-simple/[email protected]

[floral lantern]

oh

wait so where do I find the directory "libraries"

[ocean rivet]

here

https://central.sonatype.com/artifact/com.googlecode.json-simple/json-simple/overview

its the "maven central" repo

there are a few websites to browse it, but this is the "official" one

you generally get all your libraries from there

[floral lantern]

right

I was looking at mvn repositories

I think

[floral lantern]

couldn't find no download button on there tho 😭

[ocean rivet]

so you copy that pkg:maven stuff from there

[floral lantern]

I think I'm following?

hold on

I've run the first two commands

is the third one java or javac

[ocean rivet]

well okay

don't do the java or javac ones yet

first, the libraries were downloaded to the "libraries" folder

[floral lantern]

oh?

[ocean rivet]

which isn't a global thing

[floral lantern]

yeah, I'm tryna figure out where that is

[ocean rivet]

so you might want to run that command in the directory your project is

[floral lantern]

oh

wait

[ocean rivet]

just type dir or cd libraries and you'll see

[floral lantern]

found it

C:\Users\gytis\libraries 🤦‍♂️

where should I move that folder

[ocean rivet]

right next to your code

so if you have

src/
   Some.java

put it

src/
    Some.java
libraries/
    ...

[floral lantern]

I got a weird setup

I have one repo with a ton of repos inside of it

if that makes sense

so can I throw libraries in this specific project's sub-folder?

[ocean rivet]

yes

[floral lantern]

ok cool

[ocean rivet]

now, idk how VSCode is gonna react (I actually haven't used it with Java much)

but that is the right place

[floral lantern]

I'm not using vsc rn

got intellij for java

[ocean rivet]

oh good

[floral lantern]

not good, too complex program 😭

anyways

[ocean rivet]

then once you see the libraries folder in IntelliJ

[floral lantern]

set my terminal's dir to the project's path

[ocean rivet]

right click it and click "add as library"

[ocean rivet]

yep now you can run the same command

and just download it there

[floral lantern]

java or javac

[ocean rivet]

neither

jresolve.exe --output-directory libraries pkg:maven/com.googlecode.json-simple/[email protected]

this one

[floral lantern]

oh

[ocean rivet]

that downloads the library and all its transitive deps to that folder

[floral lantern]

alr I ran it

[ocean rivet]

okay now in IntelliJ you should eventually see the libraries folder

[floral lantern]

yep

[ocean rivet]

might need to restart or refresh but idk

[floral lantern]

nah it's working

[hazy oyster]

why going in such lengths when you have maven

[ocean rivet]

then right click, add as library

[ocean rivet]

I wrote a whole essay about why - don't you read my blog?

[floral lantern]

project global local?

[ocean rivet]

project

[floral lantern]

okok

yay

all the 115 red lines are gone

[ocean rivet]

Now one more improvement

[floral lantern]

can't wait to run my code and it doesn't work

[ocean rivet]

make a new file named deps

[soft cradle]

(I've got a little interest in emcues project so I'm just spectating the setup)

[ocean rivet]

short for dependencies

[floral lantern]

just a file, no extension?

[ocean rivet]

yeah

it actually doesn't matter what you call it

it can be whatever.txt if you want

[floral lantern]

done

[ocean rivet]

okay now paste this in as the first line

[floral lantern]

sure

[ocean rivet]

pkg:maven/com.googlecode.json-simple/[email protected]

and heck, put this as the 2nd line

pkg:maven/org.json/json@20231013

lets get you two json libraries

[floral lantern]

funny words

[ocean rivet]

now once you've saved the file

[floral lantern]

I think it does that automatically (pls someone tell me if it does)

[ocean rivet]

jresolve.exe --output-directory libraries @whatever_you_called_the_file

[ocean rivet]

I think it does

[floral lantern]

D:\jresolve.exe --output-directory libraries @deps

[ocean rivet]

yep

[floral lantern]

woo

[ocean rivet]

so now you can just keep adding dependencies to that file

[hazy oyster]

It doesn't matter
Your project isn't something used widely
So even if OP learn it, it will be useless the moment OP tries to do anything with anyone
And to argue against the tool itself, maven is much easy to use and much more powerful

[ocean rivet]

and run that command whenever you need to download new ones

just like a (local) pip install

[floral lantern]

man I hate java 😄

[ocean rivet]

🤷‍♂️

[hazy oyster]

You are not making their life easier at the same time 🤷

[ocean rivet]

anywho that is my tool

[floral lantern]

o

no

fucking

way

my

program

works

[ocean rivet]

Thats good

[half horizon]

why not teaching smth like maven/gradle? @ocean rivet

[ocean rivet]

because my central hypothesis was that this approach would be easier to learn first. Gotta validate hypotheses

[half horizon]

its not useful though

[ocean rivet]

what do you mean, he just said "o no fucking way my program works"

seems to have been useful

[half horizon]

but not long term

[soft cradle]

(OP wanted to try emcues tool)

And OP knows he should learn maven

[hazy oyster]

Well, maven is really easy to learn if you learn it the good way

[soft cradle]

I disagree, if you're using it more than just for dependency management, it can become a complex mess

[half horizon]

but learning it for dependency management isnt that hard

[soft cradle]

Yeah

[ocean rivet]

@floral lantern As you see, those commands you ran are a very strange level of controversial. Its a wide world out there

[soft cradle]

Neither is gradle, just creating a build.gradle intellij will prompt to import the gradle project and setup gradle for you

[hazy oyster]

In that case yes, but you will be using it for dependency management and that's the thing
And actually, even for other stuff, it's actually quite easy to learn the basics

[soft cradle]

Then in the dependency {} just add the c&p line from maven. Done

[hazy oyster]

well yes

You should never teach to a newcomer something extremely niche first

@floral lantern and now I advise you to learn maven

[floral lantern]

I'm free

[ocean rivet]

well, you can either have intellij make you a new blank maven project

or add some files manually

but basically there will be a file called pom.xml that looks like this

<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0"
         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>

    <groupId>org.example</groupId>
    <artifactId>untitled94</artifactId>
    <version>1.0-SNAPSHOT</version>

    <properties>
        <maven.compiler.source>21</maven.compiler.source>
        <maven.compiler.target>21</maven.compiler.target>
        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
    </properties>

</project>

and you can add dependencies to this file

<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0"
         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>

    <groupId>org.example</groupId>
    <artifactId>untitled94</artifactId>
    <version>1.0-SNAPSHOT</version>

    <properties>
        <maven.compiler.source>21</maven.compiler.source>
        <maven.compiler.target>21</maven.compiler.target>
        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
    </properties>

    <dependencies>
        <dependency>
            <groupId>org.json</groupId>
            <artifactId>json</artifactId>
            <version>20231013</version>
        </dependency>
    </dependencies>
</project>

and intellij will know about them