/* package whatever; // don't place package name! */
 
import java.util.*;
import java.lang.*;
import java.io.*;
 
/* Name of the class has to be "Main" only if the class is public. */
class Ideone
{
	public static void main (String[] args) throws java.lang.Exception
	{
		System.out.println(Tile.grass);
	}
}
 
class Sprite {   
	public static Sprite grass = new Sprite(0, 0, Spritesheet.testTiles);
 
	public Sprite(int a, int b, Spritesheet s) {
		System.out.println("is Spritesheet null? " + (s == null));
		System.out.println("Spritesheet: " + s);
	}
}
 
class Spritesheet {   
	public static Spritesheet testTiles = new Spritesheet();
 
	public Spritesheet() {
 
	}
}
 
class Tile {
	public static Tile grass = new Tile("grass", Sprite.grass);
 
	public Tile(String a, Sprite b) {
		System.out.println("is Sprite null? " + (b == null));
		System.out.println("Sprite: " + b);
	}
 
}

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