Yes, chocolate can be Jain-friendly, but with conditions.

• Core principle: non-violence to all living beings. So choose chocolate that has no animal-derived ingredients (no eggs, no gelatin, no dairy if you are a strict vegan Jain) and that is produced without harm to insects or living beings in the cocoa supply or processing.
• Common acceptable options: dark or plain chocolate made from cocoa, sugar, cocoa butter, and natural flavorings, with no animal ingredients or animal-derived additives.
• Dairy and sugar issues: many Jains consume dairy (lacto-vegetarian), but some avoid dairy. If you follow strict vegan guidelines, pick dairy-free chocolate.
• Processing caveats: ensure the product is not made on equipment shared with non-vegetarian ingredients if that matters to your practice, and check for any hidden animal-derived additives (certain colorings, emulsifiers, or flavorings).
• Digambar vs. Shwetambar: there is no canonical difference on chocolate itself. Both traditions focus on the ingredients and the principle of ahimsa; choose products that align with your personal Jain vows (and consult your local monk if unsure).

In short: chocolate is acceptable for many Jains if it is free from non-vegetarian ingredients and crafted with non-harmful practices. If you’d like, tell me your specific vows (e.g., vegan, dairy-free, or strict haimsa-free guidelines) and I can suggest what to look for on labels.