Q: You are to complete the code needed to create a method within a class. Your method will NOT return information. Which will best complete this statement?
public __________ myMethodName
A.void
B.null
C.str
D.return
Correct Option: AExplanation:
Justification:
The void keyword is used before a method name to indicate that the given method does not return a value.
The null keyword is not used for specifying whether a method returns a value or not.
Placing the “str” keyword before the method name implies that it will be returning a value of type string.
Return is not a valid keyword to be used before a method.
Related Lesson: Create a Base Class
Q: Which type of class should be created in order to run a job?
A.A runnable class
B.A normal class
C.A static class
D.A public class
Correct Option: AExplanation:
Justification:
A runnable class is a class that can be used as a startup object in a project. It contains a static main method. The main method is the entry point of your job.
A normal class should not be used when testing random code samples
A static class is not a valid class
A public class implies that the methods from the class can be accessed anywhere. However, to test code, you should use a runnable class that contains a static main method.
Related Lesson: Methods
Q: You need to explicitly assign a text value from a table buffer variable to a string variable named “Make” in a method. Which will best complete this statement?
vehicleTable.dbMake ______ Make;
A.=
B.+=
C.==
D.=+
Correct Option: AExplanation:
Related Lesson: Create a Base Class
Q: Using the “Private” keyword for methods allows access to variables within those methods from within the current class or subclasses. TRUE or FALSE.
A.True
B.False
Correct Option: BExplanation:
Justification:
False: This statement is false. The Private keyword only allows access to variables within the scope of the current class. Subclasses cannot access these variables. The “Protected” keyword should be used to provide access to subclasses as well.
Related Lesson: Best Practices
Q: You want to update a record in your SampleTable table that contains the account number 1234 by using the update method. Before you call the update method, which clause is used at the beginning of this statement to locate the record sampleTable.AccountNum == “1234”?
A.where sampleTable.AccountNum == “1234”
B.locate sampleTable.AccountNum == “1234”
C.join sampleTable.AccountNum == “1234”
D.forUpdate sampleTable.AccountNum == “1234”
Correct Option: AExplanation:
A. Correct: A where clause is used to specify a condition that the update method will test as it processes each row of the SampleTable table.
B. Incorrect: The locate clause doesn’t exist in coding for finance and operations apps.
C. Incorrect: A join clause links two tables on a column that is shared by both tables. It doesn’t locate a specific record.
D. Incorrect: The forUpdate clause is used to specify the table, not a record that you'll be updating.
Q: What is the reserved word in a function that is used when the method does NOT return a value?
A.Static
B.Null
C.Void
D.Private
Correct Option: CExplanation:
Justification:
A static method is a method that does not require object instantiation, but this does not determine whether or not a value will be returned.
A method of type null is not a valid method in Dynamics AX.
Void is the keyword used to specify that nothing should be returned from this method.
The Private keyword determines the scope or accessibility of a method’s variables and does not determine what, if anything should be returned.
Related Lesson: Methods
Q: You are to complete the code needed to create methods in a class with inheritance. You would like your method accessible to any class in the system. Which will best complete this statement?
____ void getFromDialog()
{
~~~Body of code ~~~
super();
}
A.public
B.private
C.protected
D.void
Correct Option: AExplanation:
Justification:
The public keyword is used to make the given method accessible from any other class in the system.
The private keyword only allows access from within the scope of the given method. This prevents accidental or unintentional re-use.
The protected keyword allows access to any subclasses that may extend the class that the method resides in. However, it prevents access from all other outside object calls.
The void keyword is already explicitly stated in the code snippet, and should not be used twice. This indicates that the given method does not return a value. The void keyword is used in conjunction with the scoping keywords: private, public and protected.
Related Lesson: Best Practices
Q: What method is automatically added when you're creating a runnable class instead of a class?
A.A new method
B.A static method
C.A main method
D.A finalize method
Correct Option: CExplanation:
A. Incorrect: A new method is used to create an instance of the class and isn't automatically added to a runnable class.
B. Incorrect: A static method is used to work with data in a table and isn't automatically added to a runnable class.
C. Correct: A main method is automatically added to a runnable class. Therefore, you would add a runnable class instead of a class to your project.
D. Incorrect: A finalize method finalizes the instance of the class. It isn't automatically added to a runnable class.
Q: What is the command used to call the method named myMethod in the parent class from the child class?
Class myChildClass extends myParentBaseClass
{
Public void myMethod()
{
_____________();
~~~Body of new code here~~~
}
}
A.insert
B.return
C.void
D.super
Correct Option: DExplanation:
Justification:
Insert is not a keyword, but a method on tables. It is not used to call an override method, but to insert data into a table .
Return is not a valid keyword used in inheritance scenarios.
The void keyword is used before a method. This indicates that a given method does not return a value. The void keyword is already used before myMethod().
Super() is the correct call to ensure that the method of the same name, “myMethod” is called.
Module 1: Introduction to Visual Studio - Quiz 13 
Module 4: Base Enumerations - Quiz 11 
Module 12: X++ Overview - Quiz 13 
Module 13: Classes - Quiz