Apex, trigger & lwc apex practice problems

Apex, lwc code examples

We've developed beginner-friendly Apex code examples to help you get started with the basics of Salesforce development.

If you're an absolute beginner, we recommend starting with Apex data types, including strings and dates, to build a solid foundation. Once you're familiar with these, move on to Apex collections, such as lists, sets, and maps, to enhance your understanding.

Mastering Apex data types and collections is essential for solving real-world business requirements using Apex controllers, triggers, batch classes, and more.

Practice apex triggers

Triggers enable developers to incorporate dynamic business rules when records are inserted, updated, or deleted from the database. Salesforce offers a comprehensive set of database events, allowing customization and record updates based on specific business requirements.

Though apex provides greater flexibility in custom business rules on data manipulation, the knowledge in writing a proper trigger code is necessary for all enterprises. Practice apex trigger scenarios with us to get your hands experienced with writing triggers.

Here are some sample trigger scenarios:

• Set the case priority based on account rating
• Log tasks automatically when a case is created
• Apex trigger to create task when cases exceed a threshold
• Apex trigger to update the account rating based on open cases

LWC Practice Examples

Lightning Web Components (LWC) is a modern framework for building UI elements on the Salesforce platform. With LWC, developers can create reusable UI elements using standard web technologies like HTML, CSS, and JavaScript. These components are lightweight, fast, and highly customizable, enabling developers to build rich, interactive user interfaces for their Salesforce applications.

With Decodeforce, you can practice creating lighning web components from our web interface without needing to set up and install visual studio code on your machine. The components will be deployed to your developer org and we will run test cases on your components to validate if you have satisfied all requirements.

Here are some examples:

• Data binding in lwc
• Read values from an input field in LWC
• Conditionally display fields on LWC components
• Wire method to get account record data

Conditional statements and loops

Conditional statements enable developers to execute business logic based on specific conditions. They guide the program's flow, helping it make decisions. Learn to use if, else, and switch statements to make your code responsive and steer it in the right direction for different scenarios.

Loops, such as for and while, iterate over collections or conditions. Imagine loops in Apex like playing your favorite song on repeat. With for and while loops, your code can keep doing tasks over and over.

Here are some sample scenarios:

• Convert picklist to a list of strings
• Replace html characters from account description

Practice with standard objects

Did you know that there are over 300 standard objects in salesforce?

Standard objects in Salesforce are pre-built, fundamental entities like Account, Contact, and Opportunity. They provide essential functionalities for managing data and supporting core Salesforce features.

Solve our programming examples to familiarize yourself with standard objects and enhance Salesforce org capabilities through Apex code.

Exception handling

Exception handling in Salesforce Apex involves using try-catch blocks to manage errors gracefully, preventing disruptions.

Handling exceptions in Apex is vital for gracefully managing unexpected errors, preventing code crashes, and ensuring robust, fault-tolerant Salesforce applications that provide a seamless user experience.

Learning to debug apex code is essential for identifying and fixing errors, ensuring smooth code execution, and enhancing your troubleshooting skills in Salesforce development.