Pyramid Class

import java.util.*; public class Pyramid { ArrayList <Integer> Pline = new ArrayList<Integer>(); ArrayList <Integer> Cline = new ArrayList<Integer>(); public Pyramid() { int lines = 5; Pline.add(2); System.out.println(Pline); Pline = new ArrayList<Integer>(); Pline.add(2); Pline.add(2); System.out.println(Pline); while (lines>0){ Cline = new ArrayList<Integer>(); Cline.add(2); for(int i = 0; i<Pline.size()-1; i++){ Cline.add(Pline.get(i)*Pline.get(i+1)); } Cline.add(2); System.out.println(Pline) ; Pline = new ArrayList<Integer>(); for(int j=0; j<Cline.size(); j++){ Pline.add(Cline.get(j)); } lines--; } } }