Sundar,
For a first attempt, search for "Java Magazine" in your search engine and you will get plenty of hits. Depending on what you're looking for, refine your search accordingly e.g. are you looking for articles, tutorials, info on core java, a particular API or info on
JEE etc.
For an online "magazine", I have found JavaWorld useful on many occasions.
Google is your friend!!
Regards,
JD