Extracting float from strings ( .obj file parsing )

[native lion]

Hi, I am working on a basic .obj renderer and ran into a problem when parsing, I was trying to get float values out of a vector of strings ( I just used Scanner to get the file's strings into a vector )

my current approach is to use split() then valueOf() but valueOf() seems to be giving me nothing but trouble
current code is as follows

public static void getFloats(Scanner scn){
        i = 0;
        while(scn.hasNextLine()){
            String[] str = File.get(i).split("  "); // obj fileLine = "v  1  0  1"
            float value = str[2].valueOf(float);
            Floats.add(value);
            i++;
        }
    }

is there an easier way to get those values or am I just doing it wrong?

[cloud shore]

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[formal magnet]

that doesn't work at all

String.valueOf means to get a String out of the given value

use Float.valueOf to get a Float, or more accurately Float.parseFloat to get a float

or you could use a scanner over the string and use nextFloat, that uses parseFloat as well

why not doubles, btw?

(sidenote, these are called arrays in java. Vector exists as a class but it isn't used much in favor of ArrayList)

also wouldn't this be an infinite loop? the loop checks if scn has a next line but you never consume from it

[native lion]

oh no I am using a Vector class currently for the File variable but Ill be sure to change it over later

but wouldn't the scanner running over the string throw an error with the file format? because of the v in the File string( v 1 0 1)

as for the infinite loop thats an artifact from before I changed it

[formal magnet]

2. there's no v in the string "0"

3. 👍

[native lion]

ohh

👍

[formal magnet]

1. a bit confused there but ok. you're using an array here and i thought you meant that

[native lion]

ill try that brb

its not that clear honestly xD

[formal magnet]

/run

String line = "v  1  0  1";
String[] str = line.split("  ");
System.out.println(Float.parseFloat(str[2]));

[untold cosmos]

Here is your java(15.0.2) output @formal magnet

0.0

[formal magnet]

also consider renaming that string array

[cloud shore]

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