Column Title Impact in Java - issue

hi,
I have a table with same column title(not the column names), runing a SQL on it from Java is returing same values for both the columns, it is because of same column title, but same SQL in SQL Assitant returns correct values, where can i find and confirm if same title is reason. is there a driver documentation which states this behaviour.
Also, Did explict column alias in SQL used in java.. now results are correct. let me know.
Thanks