Free DEX-450 Exam Braindumps
Programmatic Development using Apex and Visualforce in Lightning Experience Questions 171–175 (page: 36)

Updated On: 10-Feb-2026

What is a valid Apex statement?

  1. Map conMap = (SELECT Name FROM Contact);
  2. Account[] acctList = new List{new Account()}
  3. Integer w, x, y = 123, z = 'abc',
  4. Private static constant Double rate = 775;

Answer(s): B



A developer has a single custom controller class that works with a Visualforce Wizard to support creating and editing multiple sObjects.
The wizard accepts data from user inputs across multiple Visualforce pages and from a parameter on the initial URLWhich statement is unnecessary inside the unit test for the custom controller?

  1. Public ExtendedController (ApexPages.StandardController cntrl) { }
  2. ApexPages.currentPage().getParameters().put('input', 'TestValue')
  3. Test.setCurrentPage(pageRef),
  4. String nextPage = controller.save().getUrl();

Answer(s): A,D



A developer wants to display all of the available record types for a Case object. The developer also wants to display the picklist values for the Case.Status field. The Case object and the Case Status field are on a custom visualforce page.

Which action can the developer perform to get the record types and picklist values in the controller? Choose 2 answers

  1. Use Schema.PicklistEntry returned by Case Status getDescribe().getPicklistValues().
  2. Use Schema.RecordTypeinfo returned by Case.SObjectType getDescribe().getRecordTypelnfos()
  3. Use SOQL to query Case records in the org to get all the RecordType values available for Case.
  4. Use SOQL to query Case records in the org to get all value for the Status picklist field.

Answer(s): A,B



An sObject named Application_c has a lookup relationship to another sObject named Position_c. Both Application _c and Position_c have a picklist field named Status_c.When the Status_c field on Position_c is updated, the Status_c field on Application_c needs to be populated automatically with the same value, and execute a workflow rule on Application_c.

How can a developer accomplish this?

  1. By changing Application_c.Status_c into a roll -up summary field.
  2. By changing Application_c.Status_c into a formula field.
  3. By using an Apex trigger with a DML operation.
  4. By configuring a cross-object field update with a workflow.

Answer(s): C



A developer writes a before insert trigger.How can the developer access the incoming records in the trigger body?

  1. By accessing the Trigger.new context variable.
  2. By accessing the Trigger.newRecords context variable.
  3. By accessing the Trigger.newMap context variable.
  4. By accessing the Tripper.newList context variable.

Answer(s): A



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