Intermediate Dart
  • Welcome to the Course
  • Course Overview
  • Resources
  • Dart Fundamentals-2
    • Section Overview
    • Basic Concepts
      • Class
      • Object/Instance
      • Instance /Field Variables
      • Methods
      • "this" keyword-1
    • Constructor
      • Default Constructor
      • Parameterised Constructor
        • Basic Parameterised Constructor & "this" keyword -2
        • Parameterised Constructor with Syntactic sugar
        • Optional Arguments in Parameterised Constructor
      • Named Constructor
    • Getters & Setters and Encapsulation
      • Access Modifiers and _ symbol
      • Implicit / Default Getters & Setters
      • Custom Getters and Setters
      • Encapsulation
    • Inheritance
      • Inheritance, Types of Inheritance , Terminology
      • Method Overriding
      • @override annotation
      • super Keyword -1
      • super Keyword -2
    • Polymorphism
    • Static Variables and Methods
    • Abstract Class and Abstract Methods
    • Interface
    • Miscellaneous concepts
      • Untitled
      • Object Class
      • Mixin
      • Immutable Instances
      • Cascade notation
  • Dart Fundamentals -3
    • Section Overview
    • Asynchronous Programming
      • Basic Concept of Asynchronous programming
      • async , await , then
      • Exception Handling in asynchronous code
    • Functional Programming
      • Anonymous functions
      • High Level Iterators
    • Advanced Asynchronous Programming
      • Isolates
      • Streams
      • Generators
      • Microtask and Zones
    • Method & Constructor Overloading
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  1. Dart Fundamentals-2
  2. Basic Concepts

Object/Instance

PreviousClassNextInstance /Field Variables

Last updated 4 years ago

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Object/Instance is created from a Class which you can think as a blueprint or template for creating that object/instance.

Creating an object/instance in dart

void main() {
  
  // Object or Instance 
  
  var employee1 = new Employee();
  
    print(employee1);

}



class Employee{
  
  
  int id;
  
  String name;
  
  String position;
  
  String companyname;
  
  
}


void main() {
  
  // Object or Instance 
  
  var employee1 = Employee(); // The new keyword is optional 
  print(employee1);

}


class Employee{
    
  int id;
  
  String name;
  
  String position;
  
  String companyname;
  
  
}
 

  void main() {
  
  // Object or Instance 
  
  Employee employee1 = Employee();
  
  print(employee1);

}


class Employee{
    
  int id;
  
  String name;
  
  String position;
  
  String companyname;
  
  
}

Creating an object is sometimes called "instantiation"

The "new" keyword is optional

Null Safety in Dart 2.9