import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.Statement;
import java.util.logging.Level;
import java.util.logging.Logger;

public class UseJdbc {

    public void Jdbc() {
        try {
            Class.forName("com.mysql.cj.jdbc.Driver");//載入驅動程式
            System.out.println("Ok");
            //建立連線
            Connection connection = DriverManager.getConnection("jdbc:mysql://localhost/Contacts?serverTimezone=UTC", "root", "Cc229654512");
            System.out.println("Database connected");
            //建立語句
            Statement statement = connection.createStatement();
            //用executeQuery執行SQL查詢語句
            ResultSet resultSet = statement.executeQuery("select Name, PhoneNumber, Email, QQ, Note from Contacts");
            //獲取並輸出返回結果
            while (resultSet.next()) {
                System.out.println(resultSet.getString(1) + "\t" + resultSet.getString(2) + "\t" + resultSet.getString(3) + "\t" + resultSet.getString(4) + "\t"
                        + resultSet.getString(5));
            }
            //關閉連線
            connection.close();
        } catch (Exception ex) {
            ex.printStackTrace();
        }
    }
}