Java tutorial
import java.io.FileNotFoundException; import java.io.FileOutputStream; import java.io.IOException; import java.io.PrintStream; import java.sql.Timestamp; public class MainClass { public static void main(String[] args) { try { String FILE = "c:\\systemin.txt"; FileOutputStream outStr = new FileOutputStream(FILE, true); PrintStream printStream = new PrintStream(outStr); System.setErr(printStream); Timestamp now = new Timestamp(System.currentTimeMillis()); System.out.println(now.toString() + ": This is text that should go to the file"); outStr.close(); printStream.close(); } catch (FileNotFoundException ex) { ex.printStackTrace(); System.exit(-1); } catch (IOException ex) { ex.printStackTrace(); System.exit(-1); } } }