public static void main(String[] args) throws SQLException, IOException, Exception {

    Class.forName("org.postgresql.Driver");
    conn = DriverManager.getConnection("jdbc:postgresql://localhost:5432/postgres", "postgres", "postgres");
    System.out.println("OK. Database is on.");
    conn.setAutoCommit(false);
    statmt = conn.createStatement();
    statmt.executeUpdate("CREATE TABLE 'Strongy'");
    conn.commit();
    conn.setAutoCommit(true);
    statmt.execute("INSERT INTO TAD (number) VALUES ('Petya'); ");
    statmt.execute("INSERT INTO TAD (number) VALUES ('Vasya'); ");
    statmt.execute("INSERT INTO TAD (number) VALUES ('Masha'); ");
    System.out.println("Таблица создана или уже существует.");
    resSet = statmt.executeQuery("SELECT * FROM TAD");

    while(resSet.next())
    {
        int id = resSet.getInt("id");
        String  name = resSet.getString("name");
        String  phone = resSet.getString("phone");
        System.out.println( "ID = " + id );
        System.out.println( "name = " + name );
        System.out.println( "phone = " + phone );
        System.out.println();
    }

    System.out.println("Таблица выведена");


    conn.close();
    statmt.close();
    resSet.close();

    System.out.println("Соединения закрыты");
}