android - Create a arraylist from output of a for loop -


i trying data set [{a,b,c,d} {e,f,g,h}] i'm getting [a,b,c,d,e,f,g,h] using below mentioned code. should achieve that. highly appreciated. i'm new android please kind enough answer me. in advance 

list<string> cartitementitylist = new arraylist<string>(); (int = 0; < mcartlist.size(); i++) {      if (!mcartlist.isempty()) {         product product = mcartlist.get(i);          int quantity = product.quantity;         double subtotal = product.subtotal;         cartitementity = product.items;          (int j = 0; j < cartitementity.size(); j++) {             item item = cartitementity.get(j);             submenucode = item.submenucode;             mainmenucode = item.mainmenucode;             price = item.price;             cartitementitylist.add(mainmenucode);             cartitementitylist.add(string.valueof(price));             cartitementitylist.add(string.valueof(quantity));             cartitementitylist.add(submenucode);         }     }      system.out.println("cartitementitylist " + cartitementitylist); }

i able achieve using json serialization , answer

                              jsonobject jsonobj = new jsonobject();                                  jsonobj.put("mainmenucode",                                         item.getmainmenucode());                                 jsonobj.put("price", item.getprice());                                 jsonobj.put("quantity", product.getquantity());                                 jsonobj.put("submenucode",                                         item.getsubmenucode());                                  string = jsonobj.tostring();                                  cartiddtementitylist.add(a);

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