Certification

Hello Ram,
Ethical hacking has a bright future with the world turning digital. Much sensitive information is now stored, exchanged in the digital world. Therefore, the safety of this information from going into the wrong hands lies in the hands of an ethical hacker who can test these applications through penetration testing, etc. to uncover various vulnerabilities and threats that a hacker can pose to the application. Therefore, meticulous testing is necessary before the deployment. There are many firms that work in this field to help the application developers remove the various vulnerabilities in their product. Ethical hacking can also have a great future in law and order where cyber crimes are on the rise.
If you want to choose a career in law, then you can read the following article http://www.hindustantimes.com/education/exploring-law-as-a-career-option/story-8fKyHU3yYyJek4PDkyvHZM.html
I would suggest you to do what you like, do what you think. If you will do something you love, then making money will not be difficult for you.

Hello Adarsh,
Don't get too fascinated with "ethical hacker" as they show in movies. Hackers mean "thieves". No company would hire a thief to steal other company's data as that could land them in serious legal trouble. Further, hacking requires a deep knowledge of computer programming and the functioning of computer and networks.
What I would rather recommend you is go for security specialist professionals. These jobs are highly payable and in high demand as most companies need them to protect their own data.
For the same, you can go to some reputed computer training institutes like NIIT, etc. You can go for Java courses (all modules) followed by networking and CCNA/CCNB (CISCO) courses.
Pursue the course alongside any computer related degree course (BCA etc.) for better outcome.