Invoking the creation of an array with servlets

Question

I have a servlet that first creates an array of catalogue items that allows site users to add products to a shopping cart, obtaining information for each product from the catalog items array. Because I am forced in this scenario to declare the array first and create it later on in the code and cannot declare and create it at the same time, I have to allocate a size for it. e.g.
private static CatalogItem items[] = new CatalogItem[60];
However this is not very good as if a second site user invokes this array then there will be an out of bounds exception. Can anyone give me advice on how I can declare an array of certain size but not have it give out of bounds exceptions everytime it is invoked??
by the way this is what I am trying to do, but it only allows the servlet to be invoked by one site user at the moment...
private static CatalogItem items[] = new CatalogItem[60];
while(rs1.next()){
               // getInt or getString or getFloat etc to get the appropriate
          recordingidDB = rs1.getInt("recording_id");
          imageDB = rs1.getString("image_name");
          titleDB = rs1.getString("title");
          directorDB = rs1.getString("director");
          categoryDB = rs1.getString("category");
          durationDB = rs1.getInt("duration");
          ratingDB = rs1.getString("rating");
          yearDB = rs1.getString("year_released");
          priceDB = rs1.getFloat("price");
          items[i] =
            new CatalogItem
              (recordingidDB,
                titleDB,
                directorDB,
                categoryDB,
                durationDB,
                ratingDB,
                  yearDB,
                priceDB);
          i++;          
     } //while rs1 endanyone??

Answer 1

I'd look into an ArrayList or other Collection of some sorts so you can dynamicly expand / decrease the size.