Scala深入浅出实战经典：12,Scala中的继承：超类的构造、重写字段、重写方法代码实战

package com.wy.scala.oop

/**
 * @author Lewis
 */
class Persion1(val name:String,var age:Int){
    println("The Class is father Person1")

    val school = "BJU"

    def sleep = "8 hours"

    override def toString = "I am a Person1!"

}

class Worker(name:String,age:Int,val salary:Long) extends Persion1(name,age){
    println("Override class Persion1") 
    override val school = "Spark"
    override def toString = "I am a Worker " + super.sleep

}


object OverrideOps {
    def main(args: Array[String]): Unit = {
        val w = new Worker("Spark",29,10000000)
        println("School: " + w.school)
        println("Salary: " + w.salary)
        println("toString: " + w.toString())


    }
}