Rashmi YadavCan anyone suggest me any good project on java..?What about "Intranet Mailing System" ?

You can go through wiziq online course. There are number of online courses which can help you to learn java.

I suggest you the Head First JAVA book.

I would suggest you to go for book or online course which can enhance your java skills. And also start working on a project on your own which will clarifies...