ArrayList<String> parsedPODAY_ID=new ArrayList<>();
ArrayList<String> parsedPODAY_P_IMG=new ArrayList<>();
ArrayList<String> parsedPODAY_NAME=new ArrayList<>();
ArrayList<String> parsedPODAY_PRICE=new ArrayList<>();
ArrayList<String> parsedPODAY_OFFPRICE=new ArrayList<>();
I have created arraylist.But how can i create a arraylist or array of these arraylist. Thanks in advance!!
Try following
ArrayList<ArrayList<String>> mainArrayList = new ArrayList<ArrayList<String>>();
ArrayList<String> subOneArray = new ArrayList<String>();
subOneArray.Add("first");
subOneArray.Add("second");
ArrayList<String> subTwoArray = new ArrayList<String>();
subTwoArray.Add("first");
mainArrayList.Add(subOneArray);
mainArrayList.Add(subTwoArray);
above code will bit complicated when change made, another way is
// create map to store
Map<String, List<String>> map = new HashMap<String, List<String>>();
// create list one and store values
List<String> valSetOne = new ArrayList<String>();
valSetOne.add("Apple");
valSetOne.add("Aeroplane");
// create list two and store values
List<String> valSetTwo = new ArrayList<String>();
valSetTwo.add("Bat");
valSetTwo.add("Banana");
// create list three and store values
List<String> valSetThree = new ArrayList<String>();
valSetThree.add("Cat");
valSetThree.add("Car");
// put values into map
map.put("A", valSetOne);
map.put("B", valSetTwo);
map.put("C", valSetThree);
// iterate and display values
System.out.println("Fetching Keys and corresponding [Multiple] Values n");
for (Map.Entry<String, List<String>> entry : map.entrySet()) {
String key = entry.getKey();
List<String> values = entry.getValue();
System.out.println("Key = " + key);
System.out.println("Values = " + values + "n");
}
LinkedHashMap<String, ArrayList<T>>. Don't useArrayList<ArrayList<T>>, it is considered bad programming practice and is too complicated.