JisolGame/JisolGameServer/Main/src/test/java/TestMain.java

import java.io.*;

public class TestMain {
    public static void main(String[] args) {
        try {
            Process process = Runtime.getRuntime().exec("cmd /c npm run main",null,new File("D:\\Jisol\\JisolGame\\headless"));
            InputStream is = process.getInputStream();
            InputStreamReader isr = new InputStreamReader(is);
            BufferedReader br = new BufferedReader(isr);
            String content = br.readLine();
            while (content != null) {
                System.out.println(content);
                content = br.readLine();
            }
        } catch (IOException e) {
            e.printStackTrace();
        }
    }
}