Scala中的Apply

文章来自：http://www.cnblogs.com/hark0623/p/4194940.html  转载请注明

/**
 * Created by Administrator on 2014-12-31.
 */
class ApplyTest {
  def apply() = "Apply customer"

  def test(): Unit = {
    println("test")
  }
}

object ApplyTest{
  def apply() = new ApplyTest

  def static: Unit ={
    println("i'm a static method")
  }
}

object Apply {
  def main(args: Array[String]) {
    val app = ApplyTest()  //这里使用的是object AppyTest  ， 因为apply中实例化了class AppleTest，所以才能调用test
    app.test

    val app1 = new ApplyTest  //这里实例化的是class ApplyTest
    app1.test

    println(app())
    println(app1())
  }
}