import java.io.FileWriter;
import java.io.PrintWriter;
public class PrintWriterDemo {
public static void main() throws Exception{
PrintWriter pw = new PrintWriter(new FileWriter("dice.txt"));
for (int i = 1; i <= 1000; i++) {
int die = (int) (1 + 6 * Math.random());
pw.print(die);
pw.print(' ');
if (i % 20 == 0)
pw.println();
}
pw.println();
pw.close(); // Without this, the output file may be empty
}
}