Movie tickets

Question

Error missing parenthesis. There's something wrong with the constructor
import java.util.Scanner;

class Main {
public static void main(String[] args) {
Scanner read = new Scanner(System.in);
String movie = read.nextLine();
int row = read.nextInt();
int seat = read.nextInt();
Ticket ticket = new Ticket(movie, row, seat);
System.out.println("Movie: " + ticket.getMovie());
System.out.println("Row: " + ticket.getRow());
System.out.println("Seat: " + ticket.getSeat());
}
}

class Ticket {
private String movie;
private int row;
private int seat;

//complete the constructor
public Ticket(String movie, int row, int seat) {
this.setMovie(String movie);
this.setRow(int row);
this.setSeat(int seat);
}

public String getMovie() {
return movie;
}

public int getRow() {
return row;
}

public int getSeat() {
return seat;
}
}

Answer 1

public Ticket(String movie, int row, int seat) {
this.movie = movie;
this.row = row;
this.seat = seat;
}

Answer 2

Yes, but this one has a setter function:

//Setter
public void setColor(String c){
this.color = c
}

And the constructor is calling this setter to set the color.

In first one is no setter function. Here sets the constructor all 3 values directly.

Answer 3

Thank you, on a previous lesson the constructor was setup this way
Vehicle(){
this.setColor("Red");
}
This is why I tried it this way, this is almost like Mandarin Chinese to me at this time

public class Vehicle {
private String color;

Vehicle() {
this.setColor("Red");
}
Vehicle(String c) {
this.setColor(c);
}

// Setter
public void setColor(String c) {
this.color = c;
}

// Getter
public String getColor() {
return color;
}
}

public class Program {
public static void main(String[] args) {
//color will be "Red"
Vehicle v1 = new Vehicle();

//color will be "Green"
Vehicle v2 = new Vehicle("Green");

System.out.println(v2.getColor());
}
}

Answer 4

Thank you, I understand it now. I see that the code with the setter and getter functions jumps around a lot. Would you say most modern programs are made using setter and getter functions?

Answer 5

Hmm, setter and getter are only used in OOP programming. And they are important for that. But if you are mostly in functional programming, then OOP, setter and getter are less important. And which of both is the better way of programming? That depends on task you have to do.