©FYNDLAY 2024/2025 ALL RIGHTS RESERVED.
Salesforce Certified Platform Developer I
Exam Questions And Answers 100% Verified
And Updated.
Describe differences between Apex and traditional Programming Languages like Java. -
Answer✔1.) Traditional Programming Languages are fully flexible, and allow you to tell the
system to do just about anything. Apex is governed, and can only do what the system allows.
2.) Apex is case-insensitive
3.) Apex is on-demand, and is compiled and executed in the Cloud (i.e. on the server)
4.) Apex requires unit testing for deployment into a Production environment
5.) Apex is not a general-purpose Programming Language. It can only be used on the Force.com
platform.
What are the two primary components of Apex code? - Answer✔Apex Classes and Apex
Triggers
What is an Apex Class? - Answer✔An Apex Class is a template or a blueprint from which Apex
objects are created.
What is an Apex Trigger? - Answer✔A procedure that automatically executes during a DML
operation.
What are the three types of FOR() loops that Apex code supports? - Answer✔1.) Traditional
FOR() loops
2.) List Iteration FOR() loops
3.) SOQL FOR() loops
What are the three types of Collection data types in Apex code? - Answer✔1.) Lists
2.) Maps
3.) Sets
What are Collections used for in Apex code? - Answer✔Collections are used to store groups of
elements, such as primitive data types, or sObjects.
1|Page
, ©FYNDLAY 2024/2025 ALL RIGHTS RESERVED.
Where are the three areas where you can develop Apex code? - Answer✔1.) The Force.com IDE
2.) The Developer Console
3.) The Setup menu
What conditional statements does Apex support? - Answer✔if-else
What conditional statements are not supported by Apex? - Answer✔1.) case
2.) switch
What is the sObject data type? - Answer✔The sObject data type is a generic data type that is the
parent class for all standard and custom objects in Apex.
What are two data types that are unique to Apex? - Answer✔1.) sObject
2.) ID
What is a List? - Answer✔A List is an ordered collection of elements of a single data type.
Elements added to a List are assigned an implicit index, and therefore, Lists can contain non-
unique values (i.e. elements can be duplicated within a List).
What is a Set? - Answer✔A Set is an unordered collection of unique elements. There are no
indexes assigned to elements in a Set, and therefore, elements in a Set much be unique.
What is a Map? - Answer✔A Map is a collection of key-value pairs. Keys must be unique, but
Values can be repeated. With Maps, we supply the index, unlike Lists, where the index is
automatically applied when an element is added.
What is a common use case for Lists? - Answer✔Lists are commonly used to hold the results of
a SOQL query.
What is a common use case for Sets? - Answer✔Sets are commonly used to store values used to
filter data queried by SOQL.
What is a common use case for Maps? - Answer✔Maps are commonly used as a cache of
records that can be accessed by key/ID.
Are Apex Arrays the same as Java Arrays? Why or why not? - Answer✔While Apex Array
notation seems the same as Java Array notation, they are internally different. Apex Arrays can be
dynamically resized, while Java Arrays cannot be dynamically resized.
//Array notation
Account[] accounts = new Account[] {acc1,acc2,acc3};
//List notation
2|Page
, ©FYNDLAY 2024/2025 ALL RIGHTS RESERVED.
List<Account> accounts = new List<Accounts>;
accounts.add(acc1);
accounts.add(acc2);
accounts.add(acc3);
Are Lists also Arrays? - Answer✔No. Lists are not Arrays, but they can be syntactically
referenced as Arrays.
How can you iterate over a Map? - Answer✔First retrieve the key set by using the Map.keySet()
method. Then, use a FOR() loop to iterate through the key set to access and work with each value
in the Map.
What do classes consist of? - Answer✔Methods and Attributes
What is an inner class? - Answer✔A class within another class
Does the name of a class need to begin with a capital letter? - Answer✔No. But, it is
recommended that this be done. More specifically, it is recommended that the Java notation be
followed.
What are some ways that Apex classes are different from Java classes? - Answer✔In Apex:
1.) Inner classes can only be nested one level deep
2.) Static methods and attributes can only be declared in a top-level class definition (i.e. an "outer
class").
3.) The system-defined "Exception" class must be extended in order to create new exception
classes.
What are two ways that an Apex class can be created from the UI - Answer✔Under Setup >
Develop > Apex Classes...
1.) Click the "New" button to enter the code manually.
2.) Click the "Generate from WSDL" button and upload a WSDL file.
What are the three access modifiers for an Apex class? - Answer✔1.) Public
2.) Private
3.) Global
What are some optional definition modifiers for an Apex class? - Answer✔1.) with sharing
2.) without sharing
3.) virtual
3|Page
Salesforce Certified Platform Developer I
Exam Questions And Answers 100% Verified
And Updated.
Describe differences between Apex and traditional Programming Languages like Java. -
Answer✔1.) Traditional Programming Languages are fully flexible, and allow you to tell the
system to do just about anything. Apex is governed, and can only do what the system allows.
2.) Apex is case-insensitive
3.) Apex is on-demand, and is compiled and executed in the Cloud (i.e. on the server)
4.) Apex requires unit testing for deployment into a Production environment
5.) Apex is not a general-purpose Programming Language. It can only be used on the Force.com
platform.
What are the two primary components of Apex code? - Answer✔Apex Classes and Apex
Triggers
What is an Apex Class? - Answer✔An Apex Class is a template or a blueprint from which Apex
objects are created.
What is an Apex Trigger? - Answer✔A procedure that automatically executes during a DML
operation.
What are the three types of FOR() loops that Apex code supports? - Answer✔1.) Traditional
FOR() loops
2.) List Iteration FOR() loops
3.) SOQL FOR() loops
What are the three types of Collection data types in Apex code? - Answer✔1.) Lists
2.) Maps
3.) Sets
What are Collections used for in Apex code? - Answer✔Collections are used to store groups of
elements, such as primitive data types, or sObjects.
1|Page
, ©FYNDLAY 2024/2025 ALL RIGHTS RESERVED.
Where are the three areas where you can develop Apex code? - Answer✔1.) The Force.com IDE
2.) The Developer Console
3.) The Setup menu
What conditional statements does Apex support? - Answer✔if-else
What conditional statements are not supported by Apex? - Answer✔1.) case
2.) switch
What is the sObject data type? - Answer✔The sObject data type is a generic data type that is the
parent class for all standard and custom objects in Apex.
What are two data types that are unique to Apex? - Answer✔1.) sObject
2.) ID
What is a List? - Answer✔A List is an ordered collection of elements of a single data type.
Elements added to a List are assigned an implicit index, and therefore, Lists can contain non-
unique values (i.e. elements can be duplicated within a List).
What is a Set? - Answer✔A Set is an unordered collection of unique elements. There are no
indexes assigned to elements in a Set, and therefore, elements in a Set much be unique.
What is a Map? - Answer✔A Map is a collection of key-value pairs. Keys must be unique, but
Values can be repeated. With Maps, we supply the index, unlike Lists, where the index is
automatically applied when an element is added.
What is a common use case for Lists? - Answer✔Lists are commonly used to hold the results of
a SOQL query.
What is a common use case for Sets? - Answer✔Sets are commonly used to store values used to
filter data queried by SOQL.
What is a common use case for Maps? - Answer✔Maps are commonly used as a cache of
records that can be accessed by key/ID.
Are Apex Arrays the same as Java Arrays? Why or why not? - Answer✔While Apex Array
notation seems the same as Java Array notation, they are internally different. Apex Arrays can be
dynamically resized, while Java Arrays cannot be dynamically resized.
//Array notation
Account[] accounts = new Account[] {acc1,acc2,acc3};
//List notation
2|Page
, ©FYNDLAY 2024/2025 ALL RIGHTS RESERVED.
List<Account> accounts = new List<Accounts>;
accounts.add(acc1);
accounts.add(acc2);
accounts.add(acc3);
Are Lists also Arrays? - Answer✔No. Lists are not Arrays, but they can be syntactically
referenced as Arrays.
How can you iterate over a Map? - Answer✔First retrieve the key set by using the Map.keySet()
method. Then, use a FOR() loop to iterate through the key set to access and work with each value
in the Map.
What do classes consist of? - Answer✔Methods and Attributes
What is an inner class? - Answer✔A class within another class
Does the name of a class need to begin with a capital letter? - Answer✔No. But, it is
recommended that this be done. More specifically, it is recommended that the Java notation be
followed.
What are some ways that Apex classes are different from Java classes? - Answer✔In Apex:
1.) Inner classes can only be nested one level deep
2.) Static methods and attributes can only be declared in a top-level class definition (i.e. an "outer
class").
3.) The system-defined "Exception" class must be extended in order to create new exception
classes.
What are two ways that an Apex class can be created from the UI - Answer✔Under Setup >
Develop > Apex Classes...
1.) Click the "New" button to enter the code manually.
2.) Click the "Generate from WSDL" button and upload a WSDL file.
What are the three access modifiers for an Apex class? - Answer✔1.) Public
2.) Private
3.) Global
What are some optional definition modifiers for an Apex class? - Answer✔1.) with sharing
2.) without sharing
3.) virtual
3|Page
