Array Expander Issues.

Question

Hi there ...
this is how I am adding stuff.
class CallRecordInfo {
  String from;
  String to;
  double duration;
  CallRecordInfo(String f, String t, double d) {
    from = f;
    to = t;
    duration = d;
public class testReader{
     int CRdbSize = 2;//CRdbSize = Call Records Database Size ...
       int numRecords = 0; // number of entries in CDdb array
       CallRecordInfo CRdb[] = new CallRecordInfo[CRdbSize];
       void addCallRecord(String from, String to, double dur) {
       boolean LimitReached = (numRecords == CRdbSize);
       if (LimitReached)
                                   int tsize = CRdb.length+1;
                                CallRecordInfo tempCRdb[] = new CallRecordInfo[tsize];
                                System.arraycopy(CRdb, 0, tempCRdb, 0, CRdb.length);
                                CRdb = tempCRdb;
                                  CRdb[numRecords] = new CallRecordInfo(from, to, dur);
                                    numRecords++;
                                    numRecords = numRecords-1;     
     else {
                   CRdb[numRecords] = new CallRecordInfo(from, to, dur);
                     numRecords++;          
    }okay .. basically I don't know how long the array will be hence, I did the array expanding code as you can see. I have another method (called find) to search for records by "From". Initially I have 11 sets of record. So if I set the int CRdbSize above 11. The find method works properly. However if its below 11 which is when the boolean kicks in to expand the array, I think the array gets jumbled up or something, as then on calling find method, it doesn't return the right values.
I understand the error is when I'm copying the array, but I'm not sure what it is.
Secondly, I tried to achieve similar result using vector. However like the Class CallRecordInfo has been cast to the array, I don't know how to do it for the vector hence be able to search for the values.
Any suggestions? thank you :)

Answer 1

hi, thank you everyone for helping me out. I never noticed that I forgot to update "CRdbSize", how silly! ... However, I was wondering about the ArrayList that you suggested. How would I initialise it?
If i write something like ArrayList <CallRecordInfo> db = new ArrayList(); Then I get all sorts of errors. I'm sorry for the dumb question, I'm just not use to ArrayList as yet. :( ..