Scala - Features

Scala is object-oriented
Everything in Scala is an object including functions.

Scala is functional
Scala supports anonymous functions, higher-order functions, it allows functions to be nested and supports currying.

Scala is statically typed
Scala doesn't need to specify a type in most cases.

Scala runs on the JVM
The Scala compiler compiles your Scala code into Java Byte Code, which can then be executed by the 'scala' command on Java Virtual Machine (JVM), similar to 'java' command.

Scala can Execute Java Code
Scala enables you to use all the classes of the Java SDK and also your own custom Java classes, or your favorite Java open source projects.

Scala can do Concurrent & Synchronize processing
Scala allows you to write codes in a type-safe and immutable manner, which makes it easy to apply concurrency and parallelism (Synchronize).

Scala vs Java
Scala has a set of features that completely differ from Java. Some of these are -

All types are objects
Type inference
Nested Functions
Functions are objects
Domain specific language (DSL) support
Traits
Closures
Concurrency support inspired by Erlang
Most importantly, unlike java, ';' line end character is optional