Sending text read from GUI to a method

Hey,

Have a problem sending a String from a GUI to a method.

The method definitely works as I can use with text that I set in code.

track.deleteFromList("some object name"); // removes object called
"some object name" from the list that the track object stores.

When I try to use a text box to read in the text it doesn't work.

The String is read in correctly, checked.

The String is read by method correctly, checked.

It should then make a comparison with each place in the list to see if
it's the correct identifier (Strnig is identifier/name of the object to
be deleted) but doesn't seem to realise when there is a match and
therefore should execute remove form list.

I suspect that the String has to be declared in some special way before
it is passed to the method? as it is not of definite value when the
prog starts running. It's read and fed properly, but because it's
dynamic it's not being compared correctly?

Relevant code is below, thanks very much for your help.

t1: text box, b1: button

FROM MAIN, everything else works, track is instance of Tracker2 class
///////////////////////////////////////////////////////////////////////
 b2.addSelectionListener(new SelectionAdapter(){
     public void widgetSelected(SelectionEvent e) {

     String inny = t1.getText();

     track.deleteFromList(inny);

     }
       });
///////////////////////////////////////////////////////////////////////

import java.util.*;

public class Tracker2 {

    private List<Array_test> list_of_test_objects;

    //construct
    public Tracker2(){
        list_of_test_objects = new ArrayList<Array_test>();
    }
........
.......
.......
.......

    // delete from list given a certain identifier
    public void deleteFromList(String old_array_test_object) {
        int i = 0;
        while (i < list_of_test_objects.size()) {
            if ((list_of_test_objects.get(i).getIdentifier()) ==
old_array_test_object) {
                list_of_test_objects.remove(i);
                i = list_of_test_objects.size();
    }
        i++;
        }
    }

.......
.......
.......
.......