This week's book giveaway is in the OCAJP 8 forum. We're giving away four copies of OCA Java SE 8 Programmer I Study Guide and have Edward Finegan & Robert Liguori on-line! See this thread for details.
Mandadi, Have you looked at the SDK Documentation that came along with your J2SE distribution? It tells you very clearly how to specify the classpath. As for setting the path, that is something that your operating system documentation will tell you. Have you looked into that?