import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.SQLException;
import javax.swing.*;



public class programma {

    public static void main(String[] args) throws ClassNotFoundException, SQLException {
        Class.forName("org.postgresql.Driver");
        String url = "jdbc:postgresql:esercitazione";
        String username = "postgres";
        String password = "esame";
        Connection conn = DriverManager.getConnection(url,username,password);

        boolean stop = false;
        while(!stop){
            String choice = JOptionPane.showInputDialog("Inserisci un numero tra 1 e 4");
            if(choice  != "1" || choice  != "2" || choice  != "3" || choice  != "4")
                JOptionPane.showMessageDialog(null, "Inserire un numero tra 1 e 4");
            else{
                int c = Integer.parseInt(choice);
                switch(c){
                    case 1:

                }
            }
        }
    }

}