Reference Types

Java
1

Hello guys, when I run the following, I get errors. Please, can someone explain the reason why… Thanks a lot

import java.awt.*;

public class Main {

public static void main (String[] args) {
    Point point1 = new Point(x:1, y:1);
    Point point2 = point1;
    point1.x = 2;
    System.out.println(point2);
}

}

2

Point(x:1 , y:2) => wrong
defined wrong parameter for Point constructor

class Point {
    public Integer x;
    public Integer y;
    Point(Integer x, Integer y){
        this.x = x;
        this.y = y;
    }
}

class App {
    public static void main(String[] args) {
        Point point = new Point(1,2);
        Point point1 = point;
        System.out.println("x = "+point1.x+" | y = "+point1.y);
    }
}

to run the code above, go to this website Online Java Compiler

3

This error happens all the time because Mosh’s editor displays the parameter names. You do not type the literal “x:” or “y:” so this should be: new Point (1, 1);

His editor adds the names for clarity, but Mosh is not literally typing that out.

1 Like
4

I did as you said, that worked. Appreciate your support. Thank you so much!

1 Like
5

Thank you so much. I appreciate your help. After correction, that worked now. Thank you!