Dear User,
You will have to stand up to your rights. You are an adult and take your own decisions based on comfort. But why are your parents against your match? Is he not worthy enough or is he not settled financially and socially or there are caste issues.
If the rejection is merely on caste issues you should take your stand. If there are other reasons , ask for their clarifications and analyse objectively if the points they are objecting to are valid.
Next Steps
Take help of a local Psychologist to analyse if this partner is good match for you.