are jains also hindu

Short answer: No. Jains are not Hindus. Jainism is a distinct and independent dharma with its own scriptures, teachers, philosophy, and path to liberation. It exists in the same cultural space as Hinduism but follows different beliefs and practices. Both Digambar and Shwetambar traditions affirm these core differences, even as they share some common ethical values like nonviolence and karma. You can read more here