java.io.IOException: Stream closed when executing the code from the readme

[elbosso]

package de.elbosso.scratch.misc;

import com.thebombzen.jxlatte.JXLDecoder;
import com.thebombzen.jxlatte.JXLImage;
import com.thebombzen.jxlatte.io.PNGWriter;

import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;

public class JpegXlTest
{
    public static void main(java.lang.String[] args) throws IOException
    {
        InputStream input = new java.io.FileInputStream("/home/elbosso/src/language_java/jxlatte/samples/ants.jxl");
        OutputStream output = new java.io.FileOutputStream("/tmp/ants.png");
        JXLDecoder decoder = new JXLDecoder(input);
        JXLImage image = decoder.decode();
        PNGWriter writer = new PNGWriter(image);
        writer.write(output);
    }
}

gives

Exception in thread "main" java.lang.ExceptionInInitializerError
    at com.thebombzen.jxlatte.frame.Frame.decodeFrame(Frame.java:436)
    at com.thebombzen.jxlatte.JXLCodestreamDecoder.decode(JXLCodestreamDecoder.java:375)
    at com.thebombzen.jxlatte.JXLCodestreamDecoder.decode(JXLCodestreamDecoder.java:319)
    at com.thebombzen.jxlatte.JXLDecoder.decode(JXLDecoder.java:48)
    at de.elbosso.scratch.misc.JpegXlTest.main(JpegXlTest.java:18)
Caused by: java.io.IOException: Stream closed
    at java.base/java.io.BufferedInputStream.getInIfOpen(BufferedInputStream.java:157)
    at java.base/java.io.BufferedInputStream.fill(BufferedInputStream.java:244)
    at java.base/java.io.BufferedInputStream.read(BufferedInputStream.java:263)
    at java.base/java.io.DataInputStream.readInt(DataInputStream.java:393)
    at java.base/java.io.DataInputStream.readFloat(DataInputStream.java:452)
    at com.thebombzen.jxlatte.frame.vardct.HFGlobal.readDefaultWeights(HFGlobal.java:200)
    at com.thebombzen.jxlatte.frame.vardct.HFGlobal.<clinit>(HFGlobal.java:213)
    ... 5 more

[Traneptora]

It looks like the stream is being closed prematurely by a finalizer. What happens if you explicitly close the stream at the end with input.close(); output.close();

[Traneptora]

Actually, wait, it looks like it's having an issue reading the default weights from the jar file. How did you add it to your classpath? The jar file contains resources that need to be present.

[elbosso]

You are of course right - i moved the project from meson over to maven as a build system and forgot about the resources folder - now everything works. I did this because i have not had any experience yet with meson and could not get it to run: the first step (meson setup) already failed with an error message that i could not understand so i groped for familiar territory...