(Capcom's primary storyline)
Jack's Bar, otherwise abbreviated as "J's Bar", was a bar-and-grill in Raccoon City that had seen successful operation until September 1998. The bar was owned by a man named Jack and had several employees. The only known employees were Cindy Lennox and her friend, Will. The bar itself was victim to rowdy customers, which incensed Jack enough that he purchased a revolver in an attempt to dissuade any more rioting. Jack's Bar, like everything else in the city limits, was completely destroyed when the city was sterilised with the missile launched by the government.
This bar is not to be confused with Bar Black Jack, also in the same city.
Resident Evil Outbreak
In Resident Evil Outbreak, the game starts at Jack's Bar. Everyone is going about their normal lives until a zombie walks in and attacks Will. While the survivors escape upstairs, Will is attacked and killed by a hoard of zombies. They make it to the roof and over to an apartment. They escape outside the bar later.
Resident Evil Outbreak File 2
In Resident Evil Outbreak File 2, a non-canon scenario is used inside Jack's Bar as a tutorial. You start as your character in the bars main area and need to follow checkpoints to get past.
Resident Evil: The Umbrella Chronicles