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New method - Creates an instance of the class by using the new keyword. The default constructor is new(). The following is an example of declaring a variable and creating an instance of an object by calling the new method:

Syntax

Sample mySample; //this declares a variable to refer to a sample object

mySample = new Sample(); //this creates an instance of a sample object

Inheritance - Constructor Overridden - X++ Code

In this section you will learn how to override constructor in x++ programming language. We override constructor is to initialize values in parent class.

Parent Class

class VehicleClass{ 

// Instance fields.    
real height;    
real width;     
 
// Constructor to initialize fields height and width.   
void new(real _height, real _width)    {
    height = _height;       
    width = _width;    
}      

void run(){ 
    info("Running");    
   }
 
 }

Child Class

class CarClass extends VehicleClass{
    // Additional instance field numberOfPassengers. Fields height and width are inherited.   
 
int numberOfPassengers;     

 // Constructor is overridden to initialize.    
void new(real _height, real _width, int _numberOfPassengers)    
{        
    // Initialize the fields.       
    super(_height, _width);        
    numberOfPassengers = _numberOfPassengers;    
}  
 
public static void main(Args arg)    {        
    CarClass obj = new CarClass(12.0, 12.0, 3);        
    obj.run();        info(strFmt("Height %1", obj.height));        
    info(strFmt("Width %1", obj.width));        
    info(strFmt("number Of Passengers %1", obj.numberOfPassengers));   
     } 

 }

Output

number Of Passengers 3
Width 12.00
Height 12.00 
Running

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