what are some elements in hemingway's writing?such as alcohol, war, bullfighting, etc...
There are many element sin Hemingway's writing that you mentioned. The Sun Also Rises has all of them. Post -war in America had left many disillusioned, and left America in search of finding meaning. The "Lost Generation" in the novel all drink heavily, and bullfighting is a prominent sport, as well.
Hemingway's hero follows a code, and usually includes drinking, some war-time trauma, and the pursuit of manly activities.
The Old Man and the Sea is an epic of a different kind of battle. Hemingway's hero in this story is less overtly "manly" and more introspective.