This week's book giveaway is in the OCPJP forum. We're giving away four copies of OCA/OCP Java SE 7 Programmer I & II Study Guide and have Kathy Sierra & Bert Bates on-line! See this thread for details.
I have tried to find the answer for this problem. I understood that it is not supported because of the following reasons
1.To avoid the Deadly Diamond of Death problem 2.To satisfy the one of the design goal of java "Simple, Object oriented and familiar". Details
Now how to achieve the same in java is explaned here