Answer from a sql query into a java variable ?

Question

Hey!
Got a simple question :
String dml = ("INSERT INTO student " +
                                     "VALUES ( SELECT MAX(id) +1 FROM student "  +
                                     "','" + student.getFornavn() +
                                     "','" + student.getEtternavn() +
                                     "','" + student.getKlasse() + "')");This sql syntax would work in sql+ , but for some reason not in java.. Need to add 1 to max id every time new student are added , or is there any way i could make sql add a new unique nubmer when id = NULL ?
The other solution could be to get the answer from SELECT MAX (id) + 1 into a java variable and use that number value in insert query ?
Or maybe the best would be to make a procedure ?

Answer 1

Thanks!
How would the syntax be to execute this procedure in java :
CREATE OR REPLACE PROCEDURE legg_til_student (p_fnavn student.fornavn%TYPE, p_enavn student.etternavn%TYPE, p_klasseid student.klasseid%TYPE) IS
v_id student.id%TYPE;
BEGIN
     SELECT MAX(id) +1 INTO v_id
     FROM student;     
     IF p_klasseid > 3 THEN
     DBMS_OUTPUT.PUT_LINE ('Ugyldig klasseid');
     ELSE
     INSERT INTO student VALUES (v_id, p_fnavn, p_enavn, p_klasseid);
     END IF;
END;
/Only this into a stmt sentence ? :
exec legg_til_student ('Test', 'Test', 2); ? thanks :)