scala 通过apply创建类的对象

 1 package cn.scala_base.oop.scalaobject;
 2 
 3 class Boy(name: String) {
 4   private var age: Int = 0;
 5 
 6   println(name);
 7 
 8   def this(name: String, age: Int) {
 9     //调用主构造器
10     this(name);
11     this.age = age;
12   }
13 
14 }
15 
16 /**
17  * 在伴生对象中定义apply方法后可以在创建对象时使用Class(xx)的形式
18  */
19 object Boy {
20   def apply(name: String) = new Boy(name);
21 
22   def apply(name: String, age: Int) = new Boy(name, age);
23 }
24 
25 object ObwithApply {
26   def main(args: Array[String]): Unit = {
27     val b = Boy("xxx");
28 
29     val b2 = Boy("tele", 30);
30   }
31 }