Merge pull request #574 from xuwei-k/deprecated-scala-App

Avoid deprecated `scala.App`

Author: eed3si9n

src/sbt-test/sbt-assembly/main-class/src/main/scala/bye.scala

@@ -1,5 +1,7 @@
 package foo
 
-object Byte extends App {
-  println("bye")
+object Byte {
+  def main(args: Array[String]): Unit = {
+    println("bye")
+  }
 }

src/sbt-test/sbt-assembly/main-class/src/main/scala/hello.scala

@@ -1,5 +1,7 @@
 package foo
 
-object Hello extends App {
-  println("hello")
+object Hello {
+  def main(args: Array[String]): Unit = {
+    println("hello")
+  }
 }

src/sbt-test/shading/shading/src/main/scala/Main.scala

@@ -1,6 +1,8 @@
 import org.apache.commons.io.filefilter.AgeFileFilter
 
-object Main extends App {
-  val filter = new AgeFileFilter(0)
-  println("hello " + filter.getClass.getName.toString)
+object Main {
+  def main(args: Array[String]): Unit = {
+    val filter = new AgeFileFilter(0)
+    println("hello " + filter.getClass.getName.toString)
+  }
 }

src/sbt-test/shading/unmanagedjars/src/main/scala/Main.scala

@@ -1,6 +1,8 @@
 import org.apache.commons.io.filefilter.AgeFileFilter
 
-object Main extends App {
-  val filter = new AgeFileFilter(0)
-  println("hello " + filter.getClass.getName.toString)
+object Main {
+  def main(args: Array[String]): Unit = {
+    val filter = new AgeFileFilter(0)
+    println("hello " + filter.getClass.getName.toString)
+  }
 }