|When it started
Scala unites two worlds: object-oriented programming and functional programming.
From Java 8, functional programming aspects like Lambda expression have been integrated into Java eco-system.
|Easier than Scala
|Though you can write compact codes in Scala, the performance is actually much slower when compared to Java.
|Java is simple, super-fast and efficient in handling tasks
|Much Slower than Java
|Much Faster than Scala
|Better than Scala.
Although Java is too verbose, it is more readable than Scala. Why? Because Scala can get too nested at times. Imagine a function inside a function inside another, inside an object inside a class. Our brains aren’t calibrated to that less a level of abstraction. Java is nested too, but lesser than Scala.
|IDEs (Integrated Development Environment) Support
|The currently Scala supported IDEs are very less mature.
|Java has a myriad of IDEs available to aid you with development.
|Debugging is very hard.
|Java is much easier on the programmers with debugging.
|Community is younger and smaller.
|Very large Community.