Add app/CLIApp

Author: suaaa7

scala_cli_app/src/main/scala/app/CLIApp.scala

@@ -0,0 +1,26 @@
+package app
+
+import util.DateUtil
+import scala.annotation.tailrec
+import scala.io.StdIn.readLine
+import scala.util.{Success, Try}
+
+object CLIApp extends App {
+  val date1 = DateUtil.str2Date(getInput)
+  val date2 = DateUtil.str2Date(getInput)
+  println(s"date1: ${DateUtil.date2Str(date1)}")
+  println(s"date2: ${DateUtil.date2Str(date2)}")
+  println(s"yearsBetween: ${DateUtil.yearsBetween(date1, date2)}")
+  println(s"compare     : ${DateUtil.compare(date1, date2)}")
+
+  @tailrec
+  def getInput: String = {
+    println("入力してください (例: 2020-01-01)")
+    val input = readLine()
+
+    Try(DateUtil.str2Date(input)) match {
+      case Success(_) => input
+      case _          => getInput
+    }
+  }
+}