Question

How can I convert List<Integer> to String? E.g. If my List<Integer> contains numbers 1 2 and 3 how can it be converted to String = “1,2,3”? Every help will be appreciated.

Answer 1

One way would be:

Iterate over list, add each item to StringBuffer (or) StringBuilder and do toString() at end.

Example:

StringBuilder strbul  = new StringBuilder();
     Iterator<Integer> iter = list.iterator();
     while(iter.hasNext())
     {
         strbul.append(iter.next());
        if(iter.hasNext()){
         strbul.append(",");
        }
     }
 strbul.toString();