import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.PreparedStatement;
import java.sql.SQLException;
import java.util.Properties;

public class App {
    public static void main(String[] args) throws Exception {
        String url = "jdbc:postgresql://localhost/zoldzrt";
        Properties props = new Properties();
        props.setProperty("user", "zoldzrt");
        props.setProperty("password", "titok");
        props.setProperty("ssl", "ture");
        try {
            Connection conn = DriverManager.getConnection(url, props);
            System.out.println("Ok. A kapcsolódás sikeres.");
            String sql = "delete from employees " +                        
                        "where id=?";
            PreparedStatement ps = conn.prepareStatement(sql);
            ps.setInt(1, 2);
            int affectedRows = ps.executeUpdate();
            
            System.out.println("Érintett sorok: " + affectedRows);
            
        } catch (SQLException e) {
            System.err.println("Hiba!");
            System.err.println(e.getMessage());
        }
    }
}