What is the difference between java and core java?

Question

When looking at job openings on-line, I noticed that some openings required knowledge of \"core Java\". What is core java and how is different from java?

Answer 1

Java has mainly three sub categories :

1. Java Standard Edition (JSE) or Core Java
2. Java Enterprise Edition (JEE)
3. Java Mobile Edition (JME)

where core java is the first and basic step of all to start or learn java from beginning.