Scala is a statically typed programming language while Java is a cross-platform, network-centric programming language. Scala variables are by default of immutable type while Java variables are by default of mutable type. Scala supports lazy evaluation while Java does not support lazy evaluation. This is all about the comparison between Scala and Java programming languages taking into account several factors.
Scala Native is a Scala compiler that targets the LLVM compiler infrastructure to create executable code that uses a lightweight managed runtime, which uses the Boehm rubbish collector. In terms of programming paradigms, Scala inherits Java's object-oriented model and extends it in several ways. Before you start reading this post, if you really want to learn Scala from scratch you can check my previous post as well, which is one of them in this Scala series. Some of the more complex features of the language (tuples, functions, macros, to name a few) ultimately make it easier for the developer to write better code and increase performance by programming in Scala.
Yes, it may seem more complex to the Scala novice, but once you fully understand the concepts behind it, Scala code will seem much more simplistic than Java code. I somewhat agree with you that Java 8 will bring more parity with Scala and I could have compared Scala with Java 8, but agree with me that almost 80 percent of the projects are still on Java 1.6 and lower versions. Another big difference between these two programming languages is that functions are nothing but objects in Java, while in Scala functions are variables. Overall, Scala and Java are two excellent programming languages with different strengths and limitations.
Scala is a type-safe JVM language that incorporates both object-oriented and functional programming in an extremely concise, logical and extraordinarily powerful language. ZDNet cites Scala as one of the most popular programming languages that can get you a job interview. Scala also has many facilities for functional programming, including features found in advanced functional languages such as Haskell, and tries to be agnostic between the two paradigms, allowing the developer to choose between the two paradigms or, more often, some combination of them. Scala is a pure object-oriented programming language (in the sense that every value is an object) that provides the features of functional languages (in the sense that every function is a value) as well.
Unlike Java, Scala has many features of functional programming languages such as Scheme, Standard ML and Haskell, including currying, immutability, lazy evaluation and pattern matching. This Spark certification training course helps you master both the essential skills of the open source Apache Spark framework and the Scala programming language. Scala enough to give you a preview of Scala's power and capabilities and whet your appetite for learning the language.