public class StringToLongConversion7078 {
              public static void main(String[] args) {
                  // Example string
                  String numberAsString = "123456789012345";
          
                  // Convert the string to a long
                  long convertedNumber = convertStringToLong(numberAsString);
          
                  // Print the converted long
                  System.out.println("Converted long: " + convertedNumber);
              }
          
              // Function to convert a String to a long
              private static long convertStringToLong(String str) {
                  try {
                      // Use Long.parseLong() to convert the string to a long
                      return Long.parseLong(str);
                  } catch (NumberFormatException e) {
                      // Handle the case when the string is not a valid long
                      System.err.println("Error: " + e.getMessage());
                      return 0L; // You can choose a default value or handle it differently based on your requirement
                  }
              }
          }