Apex Intermediate Progress | ( Lessons)

Lesson: 10 | Inner Classes

In Apex, you can define top-level classes (also called outer classes) as well as inner classes, that is, a class defined within another class. You can only have inner classes one level deep.

Apex Class

public class myOuterClass{
    public  class myInnerClass{
        public void show() {
            System.debug('Hello');
        }
    }
    
}

ApexCode

To call a method of your inner class, use the following code:

myOuterClass.myInnerClass innObj = new myOuterClass.myInnerClass();
innObj.show();

Consideration

Access modifiers:
- You must use one of the access modifiers (such as public or global) in the declaration of a top-level class.
- You do not have to use an access modifier in the declaration of an inner class.
Optional definition modifiers (such as virtual, abstract, and so on)
Required: The keyword class followed by the name of the class
Optional extensions and/or implementations

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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: 10 | Inner Classes

Apex Class

Apex Intermediate