develodroid

name?.let{ println(it)  }

develodroid

if (name != null) {
  System.out.println(name)
}

develodroid

data class Person (val id : String, val name : String, val surName : String,
                  val address : String, val zipCode : Int, val phone : Int)

develodroid

public class Person {

    private String id;
    private String name;
    private String surName;
    private String address;
    private int zipCode;
    private int phone;

    public Person(String id, String name, String surName, String address, int zipCode, int phone) {

develodroid

// Read only variables, assign just once

val name : String = "develodroid"
val name2 = "develodroid" // Type inference
val name3 : String  // Type is required when no initialization
name4 = "develodroid" //

// Mutable variables

var name5 : String = "develodroid"

develodroid

fun main(args: Array<String>) {
    println("Hello World!")
}

develodroid

public class App {
    public static void main(String[] args) {
        System.out.println("Hello World!");
    }
}

develodroid

package com.develodroid.kotlinsample

import android.os.Bundle
import android.support.design.widget.FloatingActionButton
import android.support.design.widget.Snackbar
import android.support.v7.app.AppCompatActivity
import android.support.v7.widget.Toolbar
import android.view.View
import android.view.Menu
import android.view.MenuItem

develodroid

apply plugin: 'com.android.application'
apply plugin: 'kotlin-android'

android {
    compileSdkVersion 23
    buildToolsVersion "23.0.3"

    defaultConfig {
        applicationId "com.develodroid.kotlinsample"
        minSdkVersion 21

develodroid

//In order to extract a peer certificate:

File certificate = new File(certificateUri);
String peerCertificate = PeerCertificateExtractor.extract(certificate);

//Retrieved peer certificates format:
sha256/u4QJrwx7aSejc080BBQKGyTaoJovFBg4SbQ9nhoohb8=

//Enabling okhttp certificate pinning is now made the following way: