Weird array problem!

Question

I've got a problem i can't figure out. I query a database and populate my object with dates from the query result. I put the objects in an array, this is done in a for loop and works fine, the dates are correct. But when i'm outside the for loop and check the dates in the array all i get is the last date i inserted.
here is the code:
for(int i = 0; i<index; i++) {
TestResult tr = new TestResult();
tr.setSiteID(queryDataSetTestResult.getInt("SiteID"));
tr.setLicensenum(queryDataSetTestResult.getString("LicenseNum"));
tr.setStarttime(queryDataSetTestResult.getTimestamp("StartTime"));
data[i] = tr;
queryDataSetTestResult.next();
for(int j=0;j<data.length;j++) {
SetupFrame.reportMsg("3 "+data[j].getStarttime().toLocaleString());
return data;
within the first for loop where i'm adding objects to the array, the data is fine. once i'm out of there and print the dates in the array i'm not getting the right results.
thanks

Answer 1

You would have that problem if (for example) your TestResult class's method setStarttime assigned its parameter to a static variable instead of an instance variable. (The problem is that there's only one Timestamp object being used.) But if setStarttime assigns to an instance variable, then probably your database driver is always returning the same object, but with changed contents every time. A dirty trick to play, but I have seen that question asked before here. You would have to do something like this:
Timestamp ts = new Timestamp(queryDataSetTestResult.getTimestamp("StartTime").getTime());
tr.setStarttime(ts);