Apologies in advance if I am picking this up wrong.
You want to get the text that is entered/typed into a jComboEditText?
This works for me:
First type in text into jComboEditText say 'qwerty'.
I have a jButton with this code in the OnClick event to add whatever text is entering into the jComboEditBox1 to the jComboEditBox1 list, of course you will need to save this list to a DB or CSV etc. and reload it back in on next startup, if that's what you want to do.
jComboEditText1.add(ComboEditText1.getText);
Or if you just want to display text on screen:
showmessage(jComboEditText1.getText);
Note: This will do the same thing as GetText.