TYPE CASTING ERROR

Question

HI GURU's
I AM REQUIRED TO GENERATE USER ID AUTOMATICALLY STARTING FROM 0001, 0002, 0003 AND GOES ON INCREMENTING BY 1.
- I MADE USER ID FIELD OPTIONAL.
- THEN I CREATED AN ENTITY ADAPTER TO TRIGGER AT PRE INSERT EVENT, TAKING INITIAL VALUE AS 0000 IN A INTEGER VARIABLE.
- THEN OTHER VARIABLE STORES THE INCREMENTED VALUE OF INITIAL VALUE (INT ADD METHOD).
- THEN I MAPPED THE ADAPTER RETURN VARIABLE WITH THE ENTITY VALUE USER ID OF USER FORM.
WHEN I TRY TO CREATE USER IT SAY ERROR IN TYPE CASTING, OBVIOUSLY IT SHOULD SHOW BECAUSE I AM MAPPING INTEGER RETURN VARIABLE WITH THE STRING TYPE USER ID.
KINDLY SHOW ME THE WAY TO ACHIEVE THIS.
THANKS A LOT.

Answer 1

Have you tried searching this on Google.
See this link:
http://www.javadb.com/convert-an-int-value-to-string
In your Entity Adapter code, write few more lines from the method in the above link.
THEN I CREATED AN ENTITY ADAPTER TO TRIGGER AT PRE INSERT EVENT, TAKING INITIAL VALUE AS 0000 IN A INTEGER VARIABLE.
- THEN OTHER VARIABLE STORES THE INCREMENTED VALUE OF INITIAL VALUE (INT ADD METHOD).
- THEN I MAPPED THE ADAPTER RETURN VARIABLE WITH THE ENTITY VALUE USER ID OF USER FORM.