Help me in this method please

Question

I have this problem in this method. This method receives a Creator object(contains: String sip, Sting dip)
but is returning only the last two, not the first one.
It seems that the first creator that I input goes stright to the last return, do not passes through the for loop
So I don't have idea what is going on.
  public Display check(Creator c){
    int counter=0;    
    int index;        
    Display nD = new Display();
    Creator c1 = new Creator(c._sip,1);  
    if(c._sip.equals("")){
      Display nopacket = new Display();
      return nopacket;
    for (index = 0; index < currentSize; index++){
      if (c._sip.equals((data[index])._sip)){  // Check if the index of the data base is equal to the input
        counter = data[index]._counter += 1;   // If it is increment the counter
        nD = new Display(c._sip, c._dip, counter); // initialize the display
        return nD;                             // return the new display with the incrementation of the counter
      else
        nD = new Display(c._sip, c._dip, 1, c._flag);
    enqueue(c1); // Insert the new creator to the database
    return nD;
I suppose to have:
192.168.1.1  192.168.4.4  1  0
192.168.2.2  192.168.5.5  1  0
192.168.3.3  192.168.6.6  1  0
and I got:
    0  0
192.168.2.2  192.168.5.5  1  0
192.168.3.3  192.168.6.6  1  0please help me.
Thanks.

Answer 1

counter = data[index]._counter += 1;  
nD = new Display(c._sip, c._dip, counter);
return nD; 
//should be
nD = new Display(c._sip, c._dip, counter);
counter = data[index]._counter += 1;  
return nD;you are incrementing your counter b4 showing the first item (item 0).