Package creation issues using SQL Developer

create or replace package JUMPTO is
  type t_locations is ref cursor;

  procedure procGetLocations(locations out t_locations);

end JUMPTO;

DECLARE
  LOCATIONS APPLICATION.JUMPTO.t_locations;
BEGIN

  JUMPTO.PROCGET_LOCATIONS(
    LOCATIONS => LOCATIONS
  );
  -- Modify the code to output the variable
  -- DBMS_OUTPUT.PUT_LINE('LOCATIONS = ' || LOCATIONS);
END;

ORA-06550: line 2, column 32:
PLS-00302: component 'JUMPTO' must be declared
ORA-06550: line 2, column 13:
PL/SQL: item ignored
ORA-06550: line 6, column 18:
PLS-00320: the declaration of the type of this expression is incomplete or malformed
ORA-06550: line 5, column 3:
PL/SQL: Statement ignored
ORA-06512: at line 58

create or replace package body JUMPTO is

  procedure procGetLocations(locations out t_locations)
  is
  begin
    locations := null; -- Need code here
  end;

end JUMPTO;

DECLARE
     LOCATIONS JUMPTO.t_locations;
   BEGIN
     JUMPTO.PROCGETLOCATIONS(
       LOCATIONS => LOCATIONS
     );
   END;

create or replace package body JUMPTO is
procedure procGetLocations(locations out t_locations) is
begin
locations := null; -- Your code goes here
end procGetLocations;
end JUMPTO;