There are several tutorials in the internet. Like this one the most http://www.sourcetricks.com/p/java-tutor...

there are lots of Java tutorials you can find ont he internet such as in lynda.com and codeacademy.com.

You can the basics from wikipedia site or search for schildt/ O'reily ebooks on Java. I'm sharing a source link, you can try that too.

If you search with your favorite search engine and search for "java tutorial" and you will find scads of them.