When an object instance is created from a class, Access VBA calls a special parameter-less sub named Class_Initialize. Since you cannot specify parameters for this sub, you also cannot overload it.

When a class is destroyed, Access VBA calls a special sub called Class_Terminate.

When an object instance is created from a class, ASP calls a special parameter-less sub named Class_Initialize. Since you cannot specify parameters for this sub, you also cannot overload it.

When a class is destroyed, ASP calls a special sub called Class_Terminate.

Class Cyborg
  Public CyborgName
 
  Public Sub Class_Initialize
   Response.Write "<br>Class created"
   CyborgName = "Cameron"
  End Sub 

End Class

 ASP Classic Constructors (Class_Initialize)  

In C#, a constructor is called whenever a class or struct is created. A constructor is a method with the same name as the class with no return value and you can overload the constructor.

If you do not create a constructor, C# will create an implicit constructor that initializes all member fields to their default values.

Constructors can execute at two different times. Static constructors are executed by the CLR before any objects are instantiated. Regular constructors are executed when you create an object.

public class Cyborg
{
  public string CyborgName;

  //Constructor.

  public Cyborg(string pName)
  {
    CyborgName = pName;
  }
}

 C# Constructors (Use class name)  

A member function with the same name as the class.

Syntax Example:   class X { public: X(); // constructor for class X };

In Delphi, use the constructor keyword to signify which method or methods are constructors for a class. It is traditional but not required to use a procedure called Create.

In addition to having multiple named constructors, you can overload constructors.

//Interface section.

TCyborg = class(TObject)
public
  constructor Create;
end; 

constructor TCyborg.Create;
begin
  inherited;  //Call the parent Create method

end;

 Delphi Constructors (constructor)  

In Prism, a constructor is called whenever a class or struct is created. You use the constructor keyword with an unnamed method. You can overload the constructor simply by adding two or more unnamed methods with various parameters.

Prism also supports a Create constructor method for backward compatibility with Delphi for Win32.

If you do not create a constructor, Prism will create an implicit constructor that initializes all member fields to their default values.

Constructors can execute at two different times. Static constructors are executed by the CLR before any objects are instantiated. Regular constructors are executed when you create an object.

Cyborg = public class
public
  constructor();
  constructor(pName: String);
end;

 Delphi Prism Constructors (constructor + class name)  

A method with the same name as the class.

Syntax Example:   public class Cyborg{ //Constructors have the same name as the class. public Cyborg() { } }

When an object instance is created from a class, VB6 calls a special parameter-less sub named Class_Initialize. Since you cannot specify parameters for this sub, you also cannot overload it.

When a class is destroyed, VB6 calls a special sub called Class_Terminate.