What is the best way to get a job in Java?

1. Which version of Java should I learn?
2. Which tools/libraries should I learn?
3. Which certifications, if any, should I have?
4. Should I also have certifications in other programming languages and in markup languages to accompany Java, or is it enough just to know Java alone?

Right now I am learning with Java SE 8.0. If anybody can point me in the right direction, I hope this will save me time in the long run, so that I am using my time as wisely as possible.