convert comma separated string to list without intermediate container

Question

I need to convert comma separated string to list of integers. For example if I have following string

String numbersArray = \"1, 2, 3, 5, 7, 9,\";
         


        

Answer 1

If you are willing to use Google Guava ( https://code.google.com/p/guava-libraries/ ) , splitter is your friend

    List list = new ArrayList();
    for ( String s : Splitter.on(',').trimResults().omitEmptyStrings().split("1, 2, 3, 14, 5,") ) {
      list.add(Integer.parseInt(s)); 
    }

or, you could use something similar to your original approach and:

List list = new ArrayList();
for (String s :"1, 2, 3, 5, 7, 9,".split(",") ) {
    list.add(Integer.parseInt(s.trim()));
}