[Java] read file in jar

# /src/main/resources/file
FileUtils.streamToFile(getClass().getClassLoader().getResourceAsStream("file"))


public static File streamToFile(InputStream in) {
    if (in == null) {
        return null;
    }

    try {
        File f = File.createTempFile(String.valueOf(in.hashCode()), ".tmp");
        f.deleteOnExit();

        FileOutputStream out = new FileOutputStream(f);
        byte[] buffer = new byte[1024];

        int bytesRead;
        while ((bytesRead = in.read(buffer)) != -1) {
            out.write(buffer, 0, bytesRead);
        }

        return f;
    } catch (IOException e) {
        LOGGER.error(e.getMessage(), e);
        return null;
    }
}

https://stackoverflow.com/questions/14089146/file-loading-by-getclass-getresource

File loading by getClass().getResource()

https://stackoverflow.com/questions/941754/how-to-get-a-path-to-a-resource-in-a-java-jar-file

How to get a path to a resource in a Java JAR file

https://cornswrold.tistory.com/68

[JAVA] Jar안에 있는 resource 파일 읽기(classPath)

https://mkyong.com/java/java-read-a-file-from-resources-folder/

Java - Read a file from resources folder - Mkyong.com

https://stackoverflow.com/questions/941754/how-to-get-a-path-to-a-resource-in-a-java-jar-file/62878468#62878468

How to get a path to a resource in a Java JAR file