public class Apple {

    private String type;

    public Apple (String type) {
	if (type.equals(""))
	    throw new IllegalArgumentException();
	this.type = type;
    }

    public String toString() {

	return "A " + type + " apple!";
    }

    public static void main(String [] args) {

	Apple g = new Apple("Gala");
	Apple f = new Apple("Fuji");
	Apple rd = new Apple("Red Delicious");

	java.util.ArrayList<Apple> apples = 
	    new java.util.ArrayList<Apple>();

	apples.add(g);
	apples.add(f);
	apples.add(rd);

	System.out.println("My apples: " + apples);

	if (args.length < 1)
	    System.exit(6);

	System.out.println
	    ("Now I'll make an apple from the first cmd line arg");
	
	
	Apple usersApple = new Apple(args[0]); 
	apples.add(usersApple);
	System.out.println("My apples after adding yours: " + apples);

    }
    
}