Scala特点
可扩展(A Scalable language):Scala is an acronym for “Scalable Language”. This means that Scala grows with you. You can play with it by typing one-line expressions and observing the results.
面向对象(Object-Oriented):Scala is a pure-bred object-oriented language. Conceptually, every value is an object and every operation is a method-call. The language supports advanced component architectures through classes and traits.
函数式编程(Functional):
类型推断(Type Inference)
省去异常检查(Unchecked Exception):不用写try catch了。
在Java中调用Scala
在Intellij Idea中，Java中调用Scala，需要安装Scala插件，新建相应的Scala文件，写好类与方法之后，在Java类中引入相应的Scala命名空间，即可使用Scala中的方法。
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