orhanavan

// Shared Preferences Oluşturmak
SharedPreferences sp = getSharedPreferences("KisiselBilgiler", MODE_PRIVATE);
SharedPreferences.Editor editor = sp.edit();

editor.putString("isim", "Ahmet");
editor.putInt("yas", 18);

Set<String> arkadasListesi = new HashSet<>();
arkadasListesi.add("Zeynep");
arkadasListesi.add("Kadir");

orhanavan

// Bununla birlikte tabiki birden fazla Secondary Constructor kullanılabilir
class Person(var firstName: String, var lastName:String) {
    var age: Int? = null
    var phoneNumber :String? = null

    constructor(firstName: String, lastName: String, age: Int): this(firstName, lastName) {
        this.age = if(age > 0) age else throw IllegalArgumentException("Yaş 0'dan büyük olmalıdır")
    }

    constructor(firstName: String, lastName: String, age: Int, phoneNumber: String): this(firstName, lastName, age) {

orhanavan

// Primary Constructor ve Secondary Constructor beraber
class Person(var firstName: String, var lastName: String) {
    var age: Int? = null

    constructor(firstName: String, lastName: String, age: Int): this(firstName, lastName) {
        this.age = if(age > 0) age else throw IllegalArgumentException("Yaş 0'dan büyük olmalıdır")
    }
}

orhanavan

// Secondary Consructor
class Person {
    var firstName: String
    var lastName: String

    constructor(firstName: String, lastName: String) {
        this.firstName = firstName
        this.lastName = lastName
    }
}

orhanavan

// Primary Constructor
class Person(var firstName: String = "Orhan", var lastName: String = "Avan"){
    init {
        println("Selam Çukulatam")
        println("$firstName $lastName")
    }
}

orhanavan

fun main(args: Array<String>) {
    println("Hello World")
    val p1 = Person("Orhan", "Avan")
    val p2 = Person("Orhan", "Avan", 24)
    val p3 = Person("Orhan", "Avan", 24, "05XX-XXX-XX-XX")
}

orhanavan

data class Person(@get:JvmName(isMale) var male: Boolean)

orhanavan

class Person {
	private Boolean male;

	public Person (Boolean male) {
		this.male = male
	}

	public Boolean isMale() {
		return male;
	}

orhanavan

val person = Person("John")
println(person.name) // getter
person.name = "Casey"// setter

orhanavan

data class Person(val name: String)