When I run the following code, it brings up two errors regarding the lines for turtle$1$ and turtule$2$ when entering the coordinates, color, and size of the turtule. How would I fix this withot using world$1$ as the turtle's coordinates?

import java.util.$*$;

import java.awt.$*$;

public class CustomTurtleRunner

$\{$

public static void main$($String$[]$ args$)$

$\{$

World world$1=$ new World$(400,400)$;

$//1.$ Change the constructor call below to create a large

$//150$x$200$ CustomTurtle with a green body $($Color$.$green$)$

$//$ and a blue shell $($Color$.$blue$)$ at position $(150,300).$

$//$ Move it forward to see it$.$

CustomTurtle turtle$1=$ new CustomTurtle$($world$1,$Color.green,Color.blue,$150,300)$;

turtle$1.$forward$()$;

$//2.$ Create a small $25$x$50$ CustomTurtle with a red body

$//$ and a yellow shell at position $(350,200)$

$//$ Move it forward to see it$.$

CustomTurtle turtle$2=$ new CustomTurtle$(350,200,$ world$1,$ Color.red, Color.yellow,$25,50)$;

turtle$2.$forward$()$;

$//3.$ Create a CustomTurtle of your own design

CustomTurtle turtle$3=$ new CustomTurtle$(150,150,$ world$1,$ Color.red, Color.pink, $75,100)$;

turtle$3.$setPenWidth$(3)$;

turtle$3.$turnRight$()$;

turtle$3.$forward$()$;

turtle$3.$turnLeft$()$;

turtle$3.$forward$()$;

turtle$3.$turnLeft$()$;

turtle$3.$forward$()$;

turtle$3.$turnLeft$()$;

turtle$3.$forward$()$;

turtle$3.$turnRight$()$;

turtle$3.$forward$()$;

turtle$3.$turnRight$()$;

turtle$3.$forward$()$;

turtle$3.$turnRight$()$;

turtle$3.$forward$()$;

turtle$3.$turnLeft$()$;

turtle$3.$forward$()$;

turtle$3.$turnLeft$()$;

turtle$3.$forward$()$;

turtle$3.$turnLeft$()$;

turtle$3.$forward$()$;

turtle$3.$turnRight$()$;

turtle$3.$forward$()$;

turtle$3.$turnRight$()$;

turtle$3.$forward$()$;

turtle$3.$turnRight$()$;

turtle$3.$forward$()$;

turtle$3.$turnLeft$()$;

turtle$3.$forward$()$;

turtle$3.$turnLeft$()$;

turtle$3.$forward$()$;

turtle$3.$turnLeft$()$;

turtle$3.$forward$()$;

world$1.$show$($true$)$;

$\}$

$\}$

class CustomTurtle extends Turtle

$\{$

private int x;

private int y;

private World w;

private Color bodycolor;

private Color shellcolor;

private int width;

private int height;

$/**$ Constructor that takes the model display

$*$ @param modelDisplay the thing that displays the model or world

$*/$

public CustomTurtle$($ModelDisplay modelDisplay$)$

$\{$

$//$ let the parent constructor handle it

super$($modelDisplay$)$;

$\}$

$/**$ Constructor that takes the model

$*$ display to draw it on and custom colors and size

$*$ @param m the world

$*$ @param body : the body color

$*$ @param shell : the shell color

$*$ @param w: width

$*$ @param h: height

$*/$

public CustomTurtle$($ModelDisplay m$,$ Color body, Color shell, int w$,$ int h$)$

$\{$

$//$ let the parent constructor handle it

super$($m$)$;

bodycolor $=$ body;

setBodyColor$($body$)$;

shellcolor $=$ shell;

setShellColor$($shell$)$;

height $=$ h;

width $=$ w;

setHeight$($h$)$;

setWidth$($w$)$;

$\}$

$\}$

$/**$ Constructor that takes the x and y and a model

$*$ display to draw it on and custom colors and size

$*$ @param x the starting x position

$*$ @param y the starting y position

$*$ @param m the world

$*$ @param body : the body color

$*$ @param shell : the shell color

$*$ @param w: width

$*$ @param h: he

$*/$