The answer depends on what aspect of computer law you want to "do". To actually practice law and litigate on legal matters involving computer usage, software copyrights and patents, etc. you need a law degree in the USA. I'm not sure what is required elsewhere like the UK or India or Japan or South Africa, etc.
To work in compliance you probably need a legal degree and/or a technical degree such as computer science with an computer security emphasis or computer network security or software engineering or computer forensics emphasis.
Many people who work in the field go for certifications rather than degrees. Certifications like CEH (Certified Ethical Hacker) or CISSP or Security+ or CISA or CISM or GSNA might be useful.
diploma in law
A diploma in law would be called an LLB.
Yes they need a degree on law school
Diploma from an accredited law school, and a license from the state saying you passed the bar exam.
final year diploma projects
No, as long as you have a college degree. Some colleges will let you in without one. And then you will probably need a law degree.
details of 2nd sem diploma in computer science regarding subjects
In the US you do need a diploma.
Yes you do need a diploma so you can have a successful life.
Yes you do need a diploma
Joel earned a diploma in Computer Science from a university in California.
No, you dont need your diploma. All you need to do is go through training.