public class test {
    public static void main (String [] args) {

    String dbURL = "jdbc:sqlserver://localhost;databaseName=btcuoi;user=sa;password=1234";
    Connection conn = null;
         try {
             conn = DriverManager.getConnection(dbURL);
         } catch (SQLException ex) {
             Logger.getLogger(test.class.getName()).log(Level.SEVERE, null, ex);
         }
    if (conn != null) {
      System.out.println("Connected");
  }
}

}