Apex Programming Language Cheatsheet

If you’re venturing into the world of Salesforce development, you’ll likely encounter Apex, a powerful and proprietary programming language designed specifically for building applications on the Salesforce platform. Whether you’re a novice exploring the Salesforce ecosystem or an experienced developer seeking a quick reference, this Apex programming language cheatsheet will prove invaluable.

1. Hello World:

System.debug('Hello, World!');

2. Variables and Types:

Integer i = 42;
String name = 'Salesforce';
Decimal pi = 3.14;
Boolean isTrue = true;

3. Functions:

public Integer add(Integer x, Integer y) {
    return x + y;
}

4. Conditionals:

if (condition) {
    // code
} else if (anotherCondition) {
    // code
} else {
    // code
}

5. Loops:

for (Integer i = 0; i < 5; i++) {
    // code
}

while (condition) {
    // code
}

6. Collections:

List<Integer> numbers = new List<Integer>{1, 2, 3, 4, 5};
Set<String> names = new Set<String>{'John', 'Jane'};
Map<String, Integer> ageMap = new Map<String, Integer>{'John' => 30, 'Jane' => 28};

7. Objects and Classes:

public class MyClass {
    public String name;
    public Integer age;

    public MyClass(String n, Integer a) {
        name = n;
        age = a;
    }
}

8. Triggers:

trigger MyTrigger on Account (before insert) {
    for (Account a : Trigger.new) {
        // code
    }
}

9. Exception Handling:

try {
    // code
} catch (Exception e) {
    System.debug('An error occurred: ' + e.getMessage());
}

10. SOQL Queries:

List<Account> accounts = [SELECT Id, Name FROM Account WHERE Industry = 'Technology' LIMIT 10];

Conclusion

This Apex cheatsheet covers essential syntax and constructs, offering a quick reference for Salesforce developers. As you navigate the world of Apex programming, remember to leverage Salesforce documentation and community resources for deeper insights and best practices. Keep this cheatsheet close at hand to streamline your development process and ensure you’re crafting robust applications on the Salesforce platform.

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