kotlin 類和對象

In the below program, we are creating a student class to input and print the student data like name, age. It is a simple example of creating class in Kotlin.

在下面的程序中，我們將創建一個學生班級，以輸入和打印學生數據，例如姓名，年齡。 這是在Kotlin中創建類的簡單示例。

Note:

注意：

• The compiler creates a default constructor if we do not declare a constructor.

  如果我們不聲明構造函數，則編譯器將創建默認構造函數。

• Class properties must be initialized.

  類屬性必須初始化。

Kotlin學生課程 (Program for student class in Kotlin)

package com.includehelp// Class declaration, class Student{//member variables of classprivate var name: String=""private var age: Int=0//Member functions of class to set student namefun setStudentName(name:String){this.name=name}//Member functions of class to set student agefun setStudentAge(age:Int){this.age=age}//Member functions of class to return student detailsfun getStudentDetails():String{return "Name : $name, Age : $age"} }//Main function, Entry Point of Program fun main(args:Array<String>){//Create Object of Student Classval student1 = Student() // There is no 'new' keyword// set Student age and name to call member functions of classstudent1.setStudentName("Mike")student1.setStudentAge(30)//print Student details bt ccall getStudentDetails members functionsprintln("Student : ${student1.getStudentDetails()}")//Create Second object of student classval student2 = Student()student2.setStudentName("Irina")student2.setStudentAge(23)println("Student : ${student2.getStudentDetails()}") }

Output:

輸出：

Student : Name : Mike, Age : 30 Student : Name : Irina, Age : 23

翻譯自: https://www.includehelp.com/kotlin/example-of-class-and-object-with-student-data.aspx

kotlin 類和對象

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