Source-Code-from-Tutorials/Java_Beginners/56_javaBeginners.java at master · Tartarus117/Source-Code-from-Tutorials · GitHub

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//food.java file

public class food{
	void eat(){
				System.out.println(" this food is great");
}

//tuna.java file

public class tuna extends food{
	void eat(){
				System.out.println(" this tuna is great");
}

//potpie.java file

	public class potpie extends food{
			void eat(){
				System.out.println(" this potpie is great");
			}
	}

//fatty.java file

public class fatty{
	public void digest(food x){
		x.eat();
	}
}
//apples.java file
public static void main(String[] args)
{
	fatty bucky = new fatty();
	food fo = new food();
	food po = new potpie();

	bucky.digest(fo);
	bucky.digest(po);
}