java - Servlet catch unique constraint exception -

java - Servlet catch unique constraint exception -

i'm trying insert info table named rmas.

the table format is

|rcode|rname|vcode|vanme

here, set primary key rcode.

when i'm inserting record existing rcode, displays ora-0000-1 unique constraint violated..

if i'm using next code, displays message in case of other errors.

catch(exception e) { //out.println("rcode exists"); }

so, want grab primary key exception , display "rcode exist". possible? if yes, how?

thanks in advance

exception parent of exception. if have catch(exception e) { } block written exceptions fall category. need find exception compiler returning. if compiler returns exception sqlintegrityconstraintviolationexception next block come

catch(sqlintegrityconstraintviolationexception e) { // error message integrity constraint violation } catch(nullpointerexception e) { // null pointer exception occured. } catch(exception e) { // other error messages }

in way can have number of exception blocks. create sure more specific exception types first written , parent exceptions

java oracle exception servlets unique-constraint