I need help about distributed systems

Dear guys...

I search for answer about these question but not found the answer ,please help me?

1.What are the main objective and key issues of distributed systems address by Java EE and who can benefit from this system compared to other systems?

2. what is about Java EE based on distributed system evaluation criteria such as transparencies, reliability, security, performance and etc. I need summary?

Thanks

[443 byte] By [khalidjaber] at [2007-11-26 9:24:38]