soudmaijer

fun main() {
    val address1 = Address(postalCode = "1506TX", houseNumber = "4")
    val address2 = address1.copy()

    println("address1 == address2: ${address1 == address2}")

    val address3 = address1.copy()
    address3.street = "Hermitage 4"

    println("address1 == address3: ${address1 == address3}")

soudmaijer

class Product(val ean: String, val title: String)

class Book(val publisher: String, val author: String)

fun main() {
    val book = Book(
        ean = "9781617293290",
        title = "Kotlin in Action",
        publisher = "Manning",
        author = "Dmitry Jemerov, Svetlana Isakova"

soudmaijer

fun main() {
    val product = Product()
    val book1 = Book(ean = "9780671628314")
    val book2 = Book(ean = "9781617293290", title = "Kotlin in Action")
}

soudmaijer

fun main() {
    val students = listOf(
        Student("John", 19, "UK"),
        Student("Clair", 16, "US"),
        Student("Linda", 21, "NL"),
        Student("Jan", 14, "NL")
    )
}

soudmaijer

fun printLength(str: String?) {
    val length: Int = str.length
    print("$str length is $length")
}

soudmaijer

fun main() {
    val houseNumber = "121"
    val nextHouseNumber = houseNumber + 1
    println(nextHouseNumber) // should print 122
}

soudmaijer

import java.util.List;

public class Loops {
  public static void main(String[] args) {
    List<String> list = List.of("a", "b");
    
    for (String s : list) {
      System.out.println(s);
    }

soudmaijer

public class IfWhen {
  
  public static boolean yesNoToBoolean(String s) {
    if ("yes".equals(s)) return true;
    else if ("no".equals(s)) return false;
    else throw new RuntimeException("Unsupported value: " + s);
  }

  public static void main(String[] args) {
    System.out.println(yesNoToBoolean("yes"));

soudmaijer

fun main(args: Array<String>) {
    val name = "Kotlin"
    name = "John Doe"
    println("Hello, $name!")

    var answer = 21
    answer = "42"
    println("The answer to everything: $answer!")

    val groceries = listOf("Bread", "Butter", "Milk")

soudmaijer

public class Calculator {

  public int sum(int a, int b, int c) {
    return a + b + c;
  }

  public static void main(String[] args) {
    Calculator f = new Calculator();
    System.out.println(f.sum(0, 1, 2));
  }