Create 34_1_enum_class

enum class in kotlin

Author: smartherd

src/34_1_enum_class

@@ -0,0 +1,42 @@
+
+interface ICardCashBack {
+    fun getCashbackValue(): Float
+}
+
+enum class CreditCardType(val color: String, val maxLimit: Int = 1000000): ICardCashBack {
+    SILVER("gray", 50000) {
+        override fun getCashbackValue(): Float = 0.02f
+    },
+    GOLD("gold"){
+        override fun getCashbackValue(): Float = 0.04f
+    },
+    PLATINUM("black"){
+        override fun getCashbackValue(): Float = 0.06f
+    }
+}
+
+
+fun main() {
+
+    /* Access properties and methods */
+    println(CreditCardType.SILVER.color)    // gray
+    println(CreditCardType.SILVER.getCashbackValue())   // 0.02
+
+    /* Enum constants are objects of enum class type. */
+    val peterCardType: CreditCardType = CreditCardType.GOLD
+
+    /* Each enum object has two properties: ordinal and name */
+    println(CreditCardType.GOLD.ordinal)
+    println(CreditCardType.GOLD)    // OR CreditCardType.GOLD.name
+
+    /* Each enum object has two methods: values() and valueOf() */
+    val myConstants: Array<CreditCardType> = CreditCardType.values()
+    myConstants.forEach { println(it) }
+
+    /* Using in 'when' statement */
+    when(peterCardType) {
+        CreditCardType.SILVER -> println("Peter has silver card")
+        CreditCardType.GOLD -> println("Peter has gold card")
+        CreditCardType.PLATINUM -> println("Peter has platinum card")
+    }
+}