Question

How to use class and object in Dart

Answer 1

class Car {  
    String name = "2023 BMW X6";  
     
    void Display() { 
        print(name); 
    } 
}
  
void main() {
    var obj = new Car();
      
    obj.Display();
}
  
  
  
  
/*
run:
  
2023 BMW X6
  
*/

 

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Answer 2

class Car {  
    String? name;
   
    Car(String name) {
      	this.name = name;
   	}
   
    void Display() { 
      print(name); 
    } 
}

void main() {
    var obj = new Car("2023 BMW X6");
    
    obj.Display();
}




/*
run:

2023 BMW X6

*/

 

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Answer 3

class Point {
    double? x; 
    double? y; 
    
     void Display() { 
        print([x, y]); 
    } 
}

void main() {
    var p = Point();
  
    p.x = 23; 
    p.y = 98; 
    
    p.Display();
}
 
 
 
 
/*
run:
 
[23.0, 98.0]
 
*/

 

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