小编puh*_*len的帖子

方法参数String*和Array[String]？之间有区别吗？

安慰:

scala> def main(args: Array[String]): Unit = {}
main: (args: Array[String])Unit

scala> def main(args: String*): Unit = {}
main: (args: String*)Unit

代码1:

object Example {
  def main(args: Array[String]): Unit = {
    println("Hello")
  }
}

>> Hello

代码2:

object Example {
  def main(args: String*): Unit = {
    println("Hello")
  }
}

>> Exception in thread "main" java.lang.NoSuchMethodException: Example.main([Ljava.lang.String;)
    at java.lang.Class.getMethod(Class.java:1786)
    at com.intellij.rt.execution.application.AppMain.main(AppMain.java:126)