Deep is Strings inside ArrayList inside ArrayList inside ArrayList !

Deep

public class Deep {
	
	public static ArrayList<ArrayList<ArrayList<String>>> deep;
	
	public static void main (String args[]) {
		deep = new ArrayList<ArrayList<ArrayList<String>>>();
		System.out.println(deep);
		addOuterArray();
		addInnerArray(0);
		addInnerString("John",0,0);
		addInnerString("Steven",0,0);
		System.out.println(deep);
		addInnerArray(0);
		addInnerString("Mack",0,1);
		addInnerString("William",0,1);
		System.out.println(deep);
		addOuterArray();
		addInnerArray(1);
		addInnerString("Miley",1,0);
		addInnerString("Sam",1,0);
		System.out.println(deep);
		addInnerArray(1);
		addInnerString("David",1,1);
		addInnerString("Dora",1,1);
		System.out.println(deep);
		
	}
	
	public static void addInnerString (String n, int i, int x) {
		deep.get(i).get(x).add(n);
	}
	
	public static void addInnerArray (int i) {
		deep.get(i).add(new ArrayList<String>());
	}
	
	public static void addOuterArray () {
		deep.add(new ArrayList<ArrayList<String>>());
	}
	
	public static String getStringAt (int i, int x, int y) {
		return deep.get(i).get(x).get(y);
	}

}