The J-1 Visa is a non-immigrant visa designed for individuals participating in work-and-study-based exchange programs in the United States. It allows foreign nationals to gain experience in their field, improve their English skills, and share their culture with Americans. There are various categories under the J-1 Visa, including interns, trainees, teachers, and researchers. Each category has specific eligibility requirements and program durations, typically ranging from a few months to several years, depending on the exchange program's nature and goals.