Java tutorial
import java.io.DataOutputStream; import java.io.FileOutputStream; public class Main { public static void main(String[] args) throws Exception { FileOutputStream fos = new FileOutputStream("C:/WriteLong.txt"); DataOutputStream dos = new DataOutputStream(fos); long l = 65; dos.writeLong(l); for (int i = 0; i < 10; i++) dos.writeInt(i); dos.close(); } }