Serialization issue

Question

I have an ArrayList that gets serialized and written to a file. I can then do the reverse and deserialize within the same program. I hit a scope problem when I ask a seperate java program to do the latter half of the above i.e. access the elements of the ArrayList. This is because the initial serialization involved an inner private static class that is only accessible within its outer class. This private static inner class is causing me grief because it needs to be referenced by other programs in order to access its primitive types. Any ideas on how i may re-engineer things? Below is a snippet.
public class outerClass {
// Data Structure to hold user input 
private static class StringHolder implements Serializable {
      private String str1;
      private String str2;
      private String str3;
      // constructor takes 3 strings
      private StringHolder(String str1, String str2, String str3) {
         this.str1 = str1;
         this.str2 = str2;
         this.str3 = str3;
}        // end of StringHolder class
}

Answer 1

Err, make the inner class public?
If you have existing serializations that you want to deserialize, you can't. If that makes them worthless, throw them away.