What exactly to transfer in a stream?

Question

Java

Good New Year's Eve, gentlemen.
The question is this.

What should be passed in the argument where the stream is required?
I understand that the answer is a stream, but which one and how to create it?
PS I apologize in advance for the stupid question, I just can not solve it myself ...

Answer 1

Obviously the output stream to the file you want

try (OutputStream out = new FileOutputStream(new File("test.dxf"))) {
    someStreamGenerator.generate(someDoc, out);
}