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NEW QUESTION 28
A developer must create a ShippingCalculator class that cannot be instantiated and must include a working default implementation of a calculate method, that sub-classes can override. What is the correct implementation of the ShippingCalculator class?
- A. Public abstract class ShippingCalculator {
public override calculate() { /*implementation*/ }
} - B. Public abstract class ShippingCalculator {
public virtual void calculate() { /*implementation*/ }
} - C. Public abstract class ShippingCalculator {
public void calculate() { /*implementation*/ }
} - D. Public abstract class ShippingCalculator {
public abstract calculate() { /*implementation*/ }
}
Answer: B
Explanation:
the extending class can override the existing virtual methods by using the override keyword in the method definition. Overriding a virtual method allows you to provide a different implementation for an existing method https://developer.salesforce.com/docs/atlas.en-us.apexcode.meta/apexcode/apex_classes_extending.htm
NEW QUESTION 29
The Review__c object has a lookup relationship up to the Job_Application__c object. The Job_Application__c object has a master-detail relationship up the Position__c object. The relationship field names are based on the auto-populated defaults. What is the recommended way to display field data from the related Review__c records on a Visualforce page for a single Position__c record?
- A. Utilize the Standard Controller for position__c and expression syntax in the page to display related Review__c data through the job_Application__c object
- B. Utilize the Standard Controller for Position__c and cross-object Formula fields on the Review__c object to display Review__c data.
- C. Utilize the Standard Controller for position__c and a Controller Extension to query for Review__c data.
- D. Utilize the Standard Controller for Position__c and cross-object Formula fields on the job_Application__c object to display Review__c data.
Answer: C
NEW QUESTION 30
Which code should be used to update an existing Visualforce page that uses standard Visualforce components so that the page matches the look and feel of Lightning Experience?
- A. <apex:page lightningStyleSheets="true">
- B. <apex:styleSheet value="({$URLFOR($Resource.slds,'assets/slds.css')}">
- C. <apex:slds/>
- D. <apex:includeLightning/>
Answer: A
NEW QUESTION 31
A developer must implement a CheckPaymentProcessor class that provides check processing payment capabilities that adhere to what defined for payments in the PaymentProcessor interface. public interface PaymentProcessor { void pay(Decimal amount); } Which is the correct implementation to use the PaymentProcessor interface class?
- A. Public class CheckPaymentProcessor extends PaymentProcessor {
public void pay(Decimal amount);
} - B. Public class CheckPaymentProcessor implements PaymentProcessor {
public void pay(Decimal amount);
} - C. Public class CheckPaymentProcessor implements PaymentProcessor {
public void pay(Decimal amount) {}
} - D. Public class CheckPaymentProcessor extends PaymentProcessor {
public void pay(Decimal amount) {}
}
Answer: C
NEW QUESTION 32
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