伴生对象

src/class/Companion/Rain.kt

@@ -0,0 +1,14 @@
+package `class`.Companion
+
+class Rain {
+    companion object Timemail {
+        fun say() {
+            println("伴生对象")
+        }
+    }
+}
+
+fun main(args: Array<String>) {
+    Rain.say()
+    Rain.Timemail.say()
+}

src/class/Single/Singleton.kt

@@ -0,0 +1,13 @@
+package `class`.Single
+
+object Singleton {
+    var name = "单例模式"
+    fun say(){
+        println("Hello $name !")
+    }
+}
+
+fun main(args: Array<String>) {
+    Singleton.name = "World"
+    Singleton.say()
+}