add Generic1

README.md

@@ -537,6 +537,7 @@
 		- [GenericTypeParam](./src/main/scala/ScalaBasic/GenericTypeParam.scala) - Scala `Generic Type` basic op, properties, e.g. : ``` def exec[T](f: () => T): T = {f()}```
 		- [GeneralClass1](./src/main/scala/ScalaBasic/GeneralClass1.scala)
 		- [GeneralClass2](./src/main/scala/ScalaBasic/GeneralClass2.scala)
+		- [Generic1](./src/main/scala/ScalaAdvance/Generic1)
 		- Scala has `Generic` in `class, func, method`
 		- [generic classes](https://docs.scala-lang.org/tour/generic-classes.html)
 		- `Generic classes` are classes which take a type as a parameter. They are particularly useful for collection classes.

src/main/scala/ScalaAdvance/Generic1/demo1.scala

@@ -0,0 +1,20 @@
+package ScalaAdvance.Generic1
+
+// https://www.bilibili.com/video/BV12N411R726?p=272
+
+object demo1 extends App {
+  // run
+  val int_msg = new IntMessage[Int](10)
+  println("int_msg = " + int_msg)
+
+  val str_msg = new StrMessage[String]("hola")
+  println("str_msg = " + str_msg)
+}
+
+abstract class Message[T](s:T){
+  // method
+  def get() = s
+}
+
+class IntMessage[Int](v:Int) extends Message(v)
+class StrMessage[String](v:String) extends Message(v)

src/main/scala/ScalaAdvance/Generic1/demo2.scala

@@ -0,0 +1,25 @@
+package ScalaAdvance.Generic1
+
+// https://www.bilibili.com/video/BV12N411R726?p=272
+
+import ScalaAdvance.Generic1.SeasonEnum
+
+object demo2 {
+  def main(args: Array[String]): Unit = {
+    // run
+    // TODO : fix below
+    //val class01 = new EnglishClass[SeasonEnum, String, String](SeasonEnum.spring, "0001","intro")
+
+    //val class02 = new EnglishClass[SeasonEnum, String, String](SeasonEnum.summer, "002","advanced")
+  }
+}
+
+// val classSeason:A -> will make the input arg as READ ONLY arg
+class EnglishClass[A,B,C](val classSeason:A, val className:B, val classType:C)
+
+// season is an enumerate class
+// https://github.com/yennanliu/utility_Scala/blob/master/src/main/scala/ScalaBasic/EnumerationDemo.scala
+class SeasonEnum extends Enumeration {
+  type seasonEnum = Value
+  val spring, autumn, summer, winter = Value
+}