.config file for Java application?

[mystic sonnet]

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

[jovial lark]

Basically something like config.json or something which lets you set parameters which are then used in my program

[lone ibex]

yeah, just load the file on startup

[jovial lark]

How do I do that

And how will Java know, what param to paste into my vars

[lone ibex]

you would load the file, for example using Gson for json files. then you would decide which variables the data should be assigned to

you could also map it to a class

for example, you could map your Vars class to a json file. look into Gson

[jovial lark]

ok i see, do you have a link to a documentation or something

[lone ibex]

https://github.com/google/gson/blob/main/UserGuide.md

you could even just use a text file, then read the plain text file

List<String> lines = Files.readAllLines(...);

// parse the lines```

you could use a Properties file

many different options

[jovial lark]

Ok nice. Thanks, do you know by any chance, if there is a way in Java, to start a SSH listener port which will on connection from the client prompt for username and password?

[frigid blade]

Java has a built-in class for this called Properties

[jovial lark]

Ok ill do research on that

omg ok so thats actually OP

and easy

lol

[lone ibex]

keep in mind, Properties is pretty simplistic, key/value pairs

[jovial lark]

https://www.geeksforgeeks.org/java-util-properties-class-java/

yes

I see xd

[lone ibex]

if you ever need nested data, you'll have to change formats

otherwise, Properties would be the easiest

[jovial lark]

yes

[jovial lark]

Can you help with this one maybe

[lone ibex]

use a secure socket to listen on the port

[jovial lark]

How do I do dat

[lone ibex]

oh my bad, thought you said ssl. you could use JSch

[jovial lark]

Ah ye I seen that

Ok so I was going the right way

Is JSch secure

[lone ibex]

its as secure as SSH2, since its just an implementation of it

[jovial lark]

kk good

Do I need that or can I juse parse the properties into my vars file?

[lone ibex]

need what?

thats just the class definition

you'd use a Properties object to read the file

[jovial lark]

kk good

[lone ibex]

look at examples online if needed

[jovial lark]

I was just confused bc I wondered why anyone would reuse the constructor and attributes of a class just for properties xD

[lone ibex]

not sure what you mean by that

[jovial lark]

well, "extends" just inherites the attributes and methods, so I was confused by that line as it inherits an empty class basically to "Hashtable"

[lone ibex]

the class isnt empty

[jovial lark]

oh

[lone ibex]

https://github.com/openjdk/jdk/blob/master/src/java.base/share/classes/java/util/Properties.java

extending from Hashtable just says "a Properties object is a Hashtable", allowing Properties to inherit from Hashtable

extending creates an "is-a" relationship between 2 types

[jovial lark]

ohhh ye, in school we are just using it to like inherit attributes and classes yk