Lesson 14 of 18 · 10–15 min

Apex First Steps

A strong Apex foundation prevents small syntax lessons from turning into unsafe production patterns.

Learning sequence · data model first, security layers next

Your focus

Start Your Salesforce Career

FULL · Learn • Apply

Build and run the small example, then explain every line.

Learning objective

Explain and apply apex first steps in a small Salesforce scenario.

The concept

Apex is Salesforce's strongly typed server-side language. A class groups behavior, a method names an operation, and Execute Anonymous runs a temporary block for learning or administration; it is not a deployable application structure.

Worked example

Create a small class, call its method from Execute Anonymous, and inspect the debug log.

Read the requirement, identify the records and transaction, run the smallest example in a safe environment, inspect the result, and then add tests and bulk considerations before production use.

A class and method

apex

public class GreetingService {
    public static String greet(String name) {
        return 'Hello, ' + name;
    }
}

Execute Anonymous

apex

String message = GreetingService.greet('Asha');
System.debug(message);

Execute this only in a development or authorized admin context.

Common mistake

Copying a single-record example into automation without considering collections, limits, errors, or testability.

Interview angle

Explain the platform reason behind the syntax and state how the approach behaves for many records.

Pause and apply

What changes when this operation handles 200 records instead of one?

Official references

Salesforce Apex Developer Guide (opens in a new tab)

Reviewed 2026-09-23. Examples are illustrative; no code is executed here.

Key takeaways

Apex runs inside governed transactions.
Collections and bulk operations are the normal production shape.

Practice next

No linked assessment is available for this lesson. Use the pause-and-apply question to check your reasoning.

Reading these lessons does not yet save completion. Challenge results continue to provide assessment evidence.