scala入门初级代码训练-13类的多重继承
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原文地址： http://www.ptbird.cn/2016/07/19/scala-chuji-demo-13/
There I am,in the world more exciting!
by postbird
13类的多重继承
package com.ptbird.scala
/**
* Created by postbird on 2016/5/25.
*
* 类的多重继承
*/
class Human {
println("human class ")
}
trait TTeacher extends Human {
println("Teacher trait")
def teach
}
trait PianoPlayer extends Human {
println("Piano palyer trait")
def playPiano = {
println("I am playing piano")
}
}
class PianoTeacher extends Human with TTeacher with PianoPlayer {
println("piano teacher")
override def teach = {
println("i am teaching students")
}
}
object ClassTest4 {
def main(args: Array[String]): Unit = {
// var pt=new PianoTeacher
// human class
// Teacher trait
// Piano palyer trait
// piano teacher
var t2 = new Human with TTeacher with PianoPlayer {
override def teach = {
println("new human with tteacher pianoplayer")
}
}
//匿名类
t2.teach
// human class
// Teacher trait
// Piano palyer trait
// new human with tteacher pianoplayer
}
}
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