Apex Intermediate Progress | ( Lessons)

Lesson: 12 | Final Keyword

Apex Class

public class ApexClass {

   public static final Integer x=19; 

   static {
       x = 12;
   }
    
    public static void ApexMethod(){
        
        System.debug(x);
    }
}

Apex Code

ApexClass.ApexMethod();

Considerations

Final variables can only be assigned a value once, either when you declare a variable or inside a constructor. You must assign a value to it in one of these two places.
Static final variables can be changed in static initialization code or where defined.
Member final variables can be changed in initialization code blocks, constructors, or with other variable declarations.
To define a constant, mark a variable as both static and final.
Non-final static variables are used to communicate state at the class level (such as state between triggers). However, they are not shared across requests.
Methods and classes are final by default. You cannot use the final keyword in the declaration of a class or method. This means they cannot be overridden. Use the virtual keyword if you need to override a method or class.

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Apex Intermediate

A. Apex DML Operations (8 lessons)

B. Apex Classes (17 lessons)

C. Apex Triggers (9 lessons)

D. Apex Exceptions (11 lessons)

E. Asynchronous Apex (6 lessons)

F. SOSL (10 lessons)

G. Testing Apex (9 lessons)

H. Apex Fast Recap (142 lessons)

I. Build Apex Coding Skills (64 lessons)

J. Miscellaneous (17 lessons)

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Lesson: 12 | Final Keyword

Apex Class

Apex Code

Execution Log

Considerations

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Apex Intermediate

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Lesson: 12 | Final Keyword

Apex Class

Apex Intermediate