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Scala environment construction

2022-07-19 01:46:00 【Hyf 。】

Scala and Java Compare

scala be based on JVM, and Java Fully compatible with , It also has cross platform 、 Good portability 、 Convenient garbage collection and other features .

scala Than Java Face plus object-oriented .

scala It's a functional programming language .

scala More suitable for big data processing

scala It has very good support for collection type data processing .

scala For the bottom layer of scala To write

Scala Language features

scala It's a door to Java virtual machine （JVM） A statically typed programming language that is a runtime environment and combines the best features of object-oriented and functional programming （ Static languages need to be compiled in advance, such as ：java、c、c++ etc. , Dynamic languages such as ：js）.

1）Scala It's a multi paradigm programming language ,Scala Support for object-oriented and functional programming .（ Multiple paradigm , It means a variety of programming methods . There are process oriented 、 object-oriented 、 Generic 、 There are four programming methods of functional expression .）

2）Scala Source code （.scala） Will be compiled into java Bytecode (.class), Then run on JVM above , And can call the existing Java Class library , Realize the seamless docking of two languages .

3）Scala Just as a language , Very simple and efficient .

4）Scala In design , Martin ODEs is a reference Java Design idea , so to speak Scala It's from Java, At the same time, Martin odes also joined his own thoughts , Integrate the features of functional programming language into Java in , So for those who have studied Java Classmate , Just learning Scala In the process of , Make clear Scala and Java Similarities and differences , You can quickly master Scala This language .

Scala Environment building

1） Installation steps

（1） First, make sure JDK.1.8 Installation successful