Question

as my question says I would like to insert my arraylist items into a hashmap.

This is my HashMap.

HashMap<String, Integer> unSorted = new HashMap<String, Integer>();

This is my ArrayList.

arrayList.add("1");

arrayList.add("2");

Adding into Hashmap.

unSorted.put(arrayList,50);

I am pretty sure I can’t add an arraylist like this. I forgot I’ve got to iterate the arrayList and insert the values one by one.

How am I going wrong ?

Thank you for your time !

Answer 1

Iterate the ArrayList.

for(String item:arrayList)
 {
  unSorted.put(item,50);
 }