What do you need to go to java?

Before you starting to go to java you need to prepare all of the things that will you need, i suggest to you to use IDE (integrated development environtment) to go to java, IDE will make you easy to go, easy to understand java. Many IDE can you use to go to java Netbeans, Eclipse, etc. I use Netbeans to go to java.
You can download free Netbeans or Eclipse on their official website. You can use the new version of netbeans or eclipse to do java programming.