Impaqtive Java Developer Interview Questions and Answers

Sales cloud is for managing sales while service cloud is for managing customer service.

• Sales cloud is focused on managing the sales process, from lead generation to closing deals.

• Service cloud is focused on managing customer service, from support cases to service level agreements.

• Sales cloud includes features like lead and opportunity management, while service cloud includes features like case management and knowledge ...read more

Child records can be made read-only when parent record's field is updated using validation rules.

• Create a validation rule on child object

• Use ISCHANGED() function to check if parent field is updated

• Use PRIORVALUE() function to get the previous value of parent field

• Use ISBLANK() function to check if the previous value of parent field is blank

• Use ISNEW() function to allow creation of child records

• Use OR() function to comb...read more

To call a controller method from JavaScript in a Visualforce page, use the actionFunction tag.

• Create a controller method in the Apex class.

• Add an actionFunction tag in the Visualforce page.

• Call the actionFunction from JavaScript using its name.

• Pass parameters to the controller method using the actionFunction tag.

• Use the rerender attribute to update the page after the controller method is called.

Collection variables are used to store multiple values of the same data type in Apex.

• Collection variables include Lists, Sets, and Maps.

• Lists are ordered collections of elements that can contain duplicates.

• Sets are unordered collections of unique elements.

• Maps are collections of key-value pairs.

• Collection variables are useful for iterating over multiple values and performing operations on them.

• Example: List names = new...read more

Use data loader's parent-child functionality to load both parent and child records at once.

• Create a CSV file with both parent and child records

• Use the data loader's parent-child functionality to map the relationship between the two

• Ensure that the parent records are loaded before the child records

• Use the data loader's insert or upsert operation to load the data

Batch class and future method syntax in Salesforce development.

• Batch class syntax: Implements Database.Batchable interface, has start(), execute() and finish() methods.

• Future method syntax: Has @future annotation, returns void, takes parameters.

• Example batch class syntax: public class MyBatch implements Database.Batchable { ... }

• Example future method syntax: @future public static void myFutureMethod(String param) { ...

Explaining the difference between Roles & Profiles, Workflow-ProcessBuilder-Flow, types of Workflow, and Trigger context variables.

• Roles define the level of access a user has to records in an organization, while profiles define the level of access a user has to objects and fields.

• Workflow, Process Builder, and Flow are automation tools used to automate business processes in Salesforce.

• Workflow rules are used to automat...read more

Batch class is used to process large data sets in chunks. Stateful interface maintains state between batches.

• Batch class implements Database.Batchable interface

• It has three methods: start(), execute() and finish()

• Stateful interface is used to maintain state between batches

• Stateful variables can be declared outside of the execute() method

• Example: Batch class to update all accounts with a specific field value

Best practices for Apex class and Test class

• Use meaningful class and method names

• Write clear and concise code

• Use comments to explain complex logic

• Write test classes to cover all scenarios

• Use System.assert() to validate expected results

• Avoid hardcoding values

• Use try-catch blocks to handle exceptions

• Avoid SOQL queries and DML statements in loops

• Use @isTest annotation for test classes

• Use Test.startTest() and Test.stopTest

Components under a Lightning Aura Bundle

• A Lightning Aura Bundle can contain multiple components

• These components can be of different types such as Lightning Component, Apex Class, etc.

• The components can communicate with each other using events

• The bundle can also contain design resources like CSS and images