import java.sql.*;


public class MainSQL {

    private Connection connection;
    private Statement statement;

    public MainSQL() {
        try {
            Connect();
        } catch (Exception e) {
            System.out.println(e);
        }

        System.out.println("Connection established");

        try {
            receiveData();
        } catch (SQLException e) {
            System.out.println(e);
        }

//        Disconnect();
    }

    private void receiveData() throws SQLException {
        String sqlStatement = "select * from listofartists where ArtistID IN (select ArtistID from artists.work);";
        statement = connection.createStatement();

        ResultSet rs = statement.executeQuery(sqlStatement);
        int cols = rs.getMetaData().getColumnCount();


        for (int i = 1; i <= cols; i++) {
            System.out.print(rs.getMetaData().getColumnName(i) + " ");
        }
        System.out.println();
        while(rs.next()){
            for (int i = 1; i <= cols; i++) {
                String value = rs.getString(i);
                System.out.print(value + " ");
            }
            System.out.println();
        }

        rs.close();

        statement.close();
    }

    private void Connect() throws Exception {

        if(connection != null) return;

        try {
            Class.forName("com.mysql.jdbc.Driver");
        } catch (ClassNotFoundException e) {
            throw new Exception("Driver not found");
        }

        String url = "jdbc:mysql://localhost:3306/artists?useUnicode=true&useJDBCCompliantTimezoneShift=true&useLegacyDatetimeCode=false&serverTimezone=UTC";
        connection = DriverManager.getConnection(url, "root", "chen");
    }

    private void Disconnect() {
        if(connection != null){
            try {
                connection.close();
            } catch (SQLException e) {
                System.out.println("Could not close connection");
            }
        }
    }


    public static void main(String[] args) {
        new MainSQL();
    }
}