s1monw1

fun trueOrFalse() = Random().nextBoolean()

s1monw1

public class Overloader {
    public static void main(String[] args) {
        Overloader o = new Overloader();
        o.testWithoutPrint(2);
        o.test(2);
    }

    public void test(int a, boolean printToConsole) {
        if (printToConsole) System.out.println("int a: " + a);
    }

s1monw1

fun test(a: Int, printToConsole: Boolean = true) {
    if (printToConsole) println("int a: " + a)
}
fun testWithoutPrint(a: Int) = test(a, false)
fun main(args: Array) {
    testWithoutPrint(2)
    test(2)
}

s1monw1

class Turtle {
    fun penDown()
    fun penUp()
    fun turn(degrees: Double)
    fun forward(pixels: Double)
}
with(Turtle()) {
    penDown()
    for(i in 1..4) {
        forward(100.0)

s1monw1

List list = people.stream().map(Person::getName).collect(Collectors.toList());

s1monw1

val list = people.map { it.name }

s1monw1

int total = employees.stream()
                      .collect(Collectors.summingInt(Employee::getSalary)));

s1monw1

val total = employees.sumBy { it.salary }

s1monw1

public class SingleExpFun {
    private BooleanSupplier trueOrFalse = new Random()::nextBoolean;
    private boolean getNext(){
        return trueOrFalse.getAsBoolean();
    }
}

s1monw1

buildscript {
    ext.kotlin_version = '1.1.60'
    repositories {
        mavenCentral()
    }
    dependencies {
        classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version"
    }
}