UUJ edged out Sigerson Cup holders DIT 1-9 to 1-6 to progress to the semi-finals of this season's competition.
Points from Jamie Clarke and Mattie Donnelly helped UUJ lead 0-5 to 0-0 and they led 0-6 to 0-2 at the interval.
A Ronan O'Neill goal increased UUJ's advantage but Peter Acheson quickly replied with a DIT three-pointer.
DIT trailed by only three with 11 minutes left but Adrian McGuckin side held on to set up a semi-final clash with either DCU or UCD.
With swirling winds prevailing through, the Jordanstown outfit had the wind at their backs in the opening half, and moved 0-5 to 0-0 ahead after 18 minutes.
Tyrone duo Conor McAlliskey, Matthew Donnelly; Armagh's Jamie Clarke, and Monaghan pair Rory Beggan and Kieran Hughes contributed to UUJ's early scoring, with DIT struggling in front of the posts.
Dublin's Niall Scully opened DIT's account with a 23rd-minute free and although Cavan's Conor Madden registered their second point soon after, a second Hughes score handed the Poly a 0-6 to 0-2 interval lead.
Cavan's Ross Sheridan and Beggan traded points inside six minutes of the restart, before a Scully pointed free ensured a 0-7 to 0-4 score-line in the 39th minute.
The opening goal of the contest came on 48 minutes, after Tyrone's Ronan O'Neill cheekily chipped DIT keeper Conor Ferris.
However, DIT responded immediately with their goal as Tipperary's Peter Acheson netted
DIT cut the gap to three points with 11 minutes of normal time remaining before they lost Dublin defender Kevin O'Brien because of a knee injury.
Sean Fox's side were reduced to 14 men in the second minute of injury-time, following a second yellow card for Cavan's Michael Argue.
UUJ were forced to defend hard in the further three minutes of injury-time that followed, with Clarke shown a black card late on, but the northerners held on.
The game had originally been scheduled for Wednesday before being postponed because of bad weather.