What are some important things to know in Java before getting a job

Question

I'm still in highschool so I have a few years before I can do programming for a job. But I was wondering what are some critical things to learn before then?

Answer 1

What about for mobile development

Answer 2

Core Java, JDBC, SERVELET, JSP, SPRING, HIBERNATE, JAVASCRIPT, HTML, XML and knowledge of two IDEs i.e. ECLIPSE, NetBeans for a good job is necessary.