Adding string methods? not concat

Question

How can I add together strings such as "1" + "2" = "3"
not "1" + "2" = "12"
if there is no way to do this, how can I convert a string value such as "1" to 1, so I can then add these integers together?
Any help is appreciated.
thanks, Patrick.

Answer 1

class StringAdd {
     private String one = "1";
     private String two = "2";
     private String result;
     public StringAdd() {
          result = String.valueOf(Integer.parseInt(one) + Integer.parseInt(two));
          System.out.println(result);
     public static void main(String[] argv) { new StringAdd(); }
}