package com.test.scala.test
/**
* 模拟java的继承，扩展类
*/
abstract class ExtendClass(val des:String) {
def undo():String
def redo():String
}
object DoNothingAction extends ExtendClass("do nothing"){
override def undo:String={"I don't know how!"}
override def redo:String={"aaa"}
}
object test{
def main(args: Array[String]): Unit = {
val actions=Map("hello"->DoNothingAction,"go"->DoNothingAction);
for((k,v)<-actions)println(k+"->"+v.redo())
}
}
package com.test.scala.test
/**
* 继承类学习
*/
class ExtendClassStudent {
final def add(a:Int,b:Int):Int={a+b}
def aa(bb:String):String={bb}
}
class Zilei extends ExtendClassStudent{
override def aa(bb:String):String={bb}
}
