Book Image

Salesforce Platform Developer I Certification Guide

By : Jan Vandevelde, Gunther Roskams
Book Image

Salesforce Platform Developer I Certification Guide

By: Jan Vandevelde, Gunther Roskams

Overview of this book

Salesforce Lightning Platform, used to build enterprise apps, is being increasingly adopted by admins, business analysts, consultants, architects, and especially developers. With this Salesforce certification, you'll be able to enhance your development skills and become a valuable member of your organization. This certification guide is designed to be completely aligned with the official exam study guide for the latest Salesforce Certified Platform Developer I release and includes updates from Spring '19. Starting with Salesforce fundamentals and performing data modeling and management, you’ll progress to automating logic and processes and working on user interfaces with Salesforce components. Finally, you'll learn how to work with testing frameworks, perform debugging, and deploy metadata, and get to grips with useful tips and tricks. Each chapter concludes with sample questions that are commonly found in the exam, and the book wraps up with mock tests to help you prepare for the DEV501 certification exam. By the end of the book, you’ll be ready to take the exam and earn your Salesforce Certified Platform Developer I certification.
Table of Contents (15 chapters)
Free Chapter
1
Section 1: Fundamentals, Data Modeling, and Management
4
Section 2: Logic, Process Automation, and the User Interface
9
Section 3: Testing, Debugging, and Exercise
12
Mock Tests

What is a class and an instance?

To go over what we have just done and to explain the concept of a class and an instance a bit more clearly, let's take a look at the following screenshot and explanation:

A class acts as a blueprint to create objects from. In this example, we created a class called Car. This Car class acts as a blueprint to build instances of cars from. So, because it's a blueprint, we define what each car has in the class—these are called member variables (in our case, that's a model, a brand, and a color). We also define actions that a car can perform and what a car can do, and we call these methods! In our car example, we have defined that a car can start, stop, and also accelerate.

Note that there is one special member variable, the count variable, which we declared as static, which means that this is a class variable and not a member...