Lesson: 08 | Objects (Instance)

An object is an instance of a class.

In Apex, You will need to create objects for non-static methods.

Here is the syntax of an object:

Class_Name Object_Name = new Class_Name ();

You can call the method with the object name:

Object_Name .Method_Name();

Example:

Apex Class

public class Calculator {    
    public Decimal surfaceArea(Decimal a, Decimal b, Decimal c){        
        Decimal sArea = 2*(a*b+b*c+a*c);        
        return sArea;        
    }
}

Anonymous Window

Calculator objA = new Calculator();
System.debug('Surface Area: '+ objA.surfaceArea(3,7,8));

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Apex Intermediate

A. Apex DML Operations (8 lessons)

B. Apex Classes (17 lessons)

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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)

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Lesson: 08 | Objects (Instance)

Example:

Apex Class

Anonymous Window

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Apex Intermediate

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Lesson: 08 | Objects (Instance)

Example:

Apex Class

Apex Intermediate