Looping over a TreeMap with for|foreach

Question

I am a student programmer and am impressed how the APIs for the different collections are very similar if not completely identical.
I used treemap.keySet() to loop over TreeMap<String, MyVeryOwnClass> successfully with a while loop. But it seems impossible to do the same with the newish for-each loop. Or have I missed the point somewhere?
Regards,
Hedley

Answer 1

Okay, I've got the for/each loop working its way through my Applicant TreeMap as follows:
    public String findApprovedApplcnt()
        String applicantKey = "";
        for (Map.Entry<String, Applicant> entry : applicantList.entrySet())
            Applicant applicant = entry.getValue();
            boolean approved = applicant.isApproved();
            if (approved);
                applicantKey = applicant.getApplcntKey();
                // The String key is hashed and stored in an instance variable when object created.
                // It is subsequently retrieved and used when the object is added to the tree map.
                break;
        return applicantKey;
    } // findApprovedApplcnt(..)In the Applicant class is the flag 'private boolean approved = false;' (initially), accessed by the method .isApproved(). What the loop is supposed to do is examine each Applicant object applicant in turn, skip over those where approved = false, and grab the key of the first applicant where approved = true, then break out of the loop and return the key.
Trouble is, it is grabbing the key of the first applicant it encounters regardless of whether approved is either true or false! I have gone nuts over this, stepping through in the debugger, inserting println statements to check the value of approved when it is retrieved, attempting to desk check, etc.
So what is the obvious error to which I am completely blind?
Regards,
Sleepless in Melbourne