Scala--嵌套类

Posted 2020-11-30 jeff190812

1、scala的嵌套类也成为内部类

package com.itstar.scala.test

import scala.collection.mutable.ArrayBuffer

class Student2 {
  private var stuName:String = "Tom"
  private var stuAge:Int = 20
  //定义一个容纳课程的数组
  private var courseList = new ArrayBuffer[course]()
  //声明一个增加课程的方法
  def addCourse(cname:String,cgrade:Int) = {
    var c = new course(cname,cgrade)
    courseList += c
  }

  //定义课程类，使用主构造器，就是把属性写在类名后面
  //var courseName:String,var grade:Int等同于private var xxx
  class course(var courseName:String,var grade:Int){}
}

object Student2{
  def main(args: Array[String]): Unit = {
    var s1 = new Student2
    s1.addCourse("语文",90)
    s1.addCourse("数学",100)
    s1.addCourse("英语",55)
    println("姓名：" + s1.stuName + "	" + "年龄：" + s1.stuAge)
    println("=============课程成绩=============")
    for(s <- s1.courseList){
      println(s.courseName+"	"+s.grade)
    }
  }
}