Filter problem

[gaurav gupta sitm]

On Framework - JPA

Symbols
# cause to -java.lang.NumberFormatException: null

% cause to - null
JPA convert this "%" to "" (Empty) and insert nothing to database so On retrival it returns 'null'

& cause to - Space
JPA convert this '&' (amp) to '"' (Double quotes ) and insert DoubleQuotes to database so On retrival it returns ' ' (Space)


is there any technique to handle these symbols -----