'class'

src/class/Stu.kt

@@ -13,6 +13,26 @@ class Stu {
     }
 }
 
+class Student() {
+    private var name: String = ""
+    private var age: Int = 0
+
+    fun setName(name: String){
+        this.name = name
+    }
+
+    fun setAge(age: Int){
+        if (age <= 0){
+            println("年龄输入有误")
+        } else {
+            this.age = age
+        }
+    }
+    fun say(): Unit {
+        println("name = $name, age = $age")
+    }
+}
+
 fun main(args: Array<String>) {
     var stu = Stu()
     stu.sayHello()
@@ -21,4 +41,10 @@ fun main(args: Array<String>) {
     stu.name = "朵儿"
     stu.age = 14
     stu.sayHello()
+
+    var student = Student()
+    student.setAge(0)
+    student.setAge(15)
+    student.setName("朵")
+    student.say()
 }