PL/SQL IF loop not working in my package - oracle

Question

I want to write my procedure as follows:
begin
if(condn1) then
statements;
end if ;
exception part
end ;
begin
if(condn2) then
statements;
end if ;
exception part
end ;
When I try to compile this package I get the following error:
LINE/COL ERROR
-------- -----------------------------------------------------------------
509/5 PLS-00103: Encountered the symbol "WHEN" when expecting one of
the following:
( begin case declare end exception exit for goto if loop mod
null pragma raise return select update while with
<an identifier> <a double-quoted delimited-identifier>
<a bind variable> << continue close current delete fetch lock
insert open rollback savepoint set sql execute commit forall
merge pipe purge
The symbol "case" was substituted for "WHEN" to continue.
545/10 PLS-00103: Encountered the symbol ";" when expecting one of the
following:
case

Answer 1

If you want to include several exception parts, you must include a whole block for each exception part you want. The block structure is:
DECLARE [Optional]
... [Optional]
BEGIN
...
EXCEPTION
WHEN ... THEN
...
END;
Thus, your code with 2 exception parts should be something similar to the following code:
DECLARE
your_variables;
BEGIN
BEGIN
IF condition_1 THEN
statements;
END IF;
EXCEPTION
WHEN your_exceptions_for_part_1 THEN
...
END;
BEGIN
IF condition_2 THEN
statements;
END IF;
EXCEPTION
WHEN your_exceptions_for_part_2 THEN
...
END;
EXCEPTION
WHEN common_exceptions THEN
...
END;