Why scala generates 2 files Person class and Person class

Question

I have a Scala project with Person.class in it. When I compile it, 2 files are getting created: Person.class and Person$.class. I am not understanding why. Can someone explain?

Answer 1

While running Scala, Scala objects are translated to JVM constructs. An object X is translated to a class X$ with ordinary methods, ordinary inheritance etc. This is done to be able to access its public methods from Java by calling them as static methods X.someMethod().