private static String ip = "localhost";
private static String port = "3306";
private static String database = "IMS";
private static String user = "root";
private static String pass = "pass";
private static String path = "/home/user/Desktop/project/";

    public static void backup() {
    Date dateNow = new Date();
    SimpleDateFormat dateformatyyyyMMdd = new SimpleDateFormat("yyyyMMdd");
    String date_to_string = dateformatyyyyMMdd.format(dateNow);
    System.out.println("date into yyyyMMdd format: " + date_to_string);
    String ss = "IMS.sql";
    String fullName = path + " " + date_to_string + " " + ss;
    String dumpCommand = "mysqldump " + database + " -h " + ip + " -u " + user + " -p" + pass;
    Runtime rt = Runtime.getRuntime();
    File test = new File(fullName);
    PrintStream ps;
    try {
        Process child = rt.exec(dumpCommand);
        ps = new PrintStream(test);
        InputStream in = child.getInputStream();
        int ch;
        while ((ch = in.read()) != -1) {
            ps.write(ch);
        //System.out.write(ch); //to view it by console
        }

        InputStream err = child.getErrorStream();
        while ((ch = err.read()) != -1) {
            System.out.write(ch);
        }
        } catch (Exception exc) {
        exc.printStackTrace();
       }
       }