itive types including String, Arrays and objects all objects in Java? What are Enums in Java? Are they objects too? Why are they used in Java (ENUMS)?...

Is everything in Java an Object? Are all Primitive types including String, Arrays and objects all objects in Java? What are Enums in Java? Are they objects too? Why are they used in Java (ENUMS)? Should they always be written in a separate code editor in Java? Explain all using readable Java source-code.