Jake Barnes is a fictional character from the novel The Sun Also Rises by Ernest Hemingway. He is an American journalist and a World War I veteran living in Paris during the 1920s. Jake struggles with the physical and emotional scars of war, which affect his relationships and sense of identity. Throughout the story, Jake's love for Lady Brett Ashley is central to his character. Their relationship is complicated by Jake's war injury, which prevents him from being intimate with her. This dynamic highlights themes of love, loss, and the impact of war on personal lives.