Dart - Super and This keyword Last Updated : 02 Apr, 2025 Summarize Comments Improve Suggest changes Share Like Article Like Report Super Keyword in DartIn Dart, the super keyword is used to refer immediate parent class object. It is used to call properties and methods of the superclass. It does not call the method, whereas when we create an instance of subclass than that of the parent class is created implicitly so super keyword calls that instance. Advantages of super keywordIt can be used to access the data members of parent class when both parent and child have member with same name.It is used to prevent overriding the parent method.It can be used to call the parameterized constructor of the parent class.Syntax:// To access parent class variablessuper.variable_name;// To access parent class methodsuper.method_name();Showing the flow of object creation in inheritanceExample : Dart // Defining the parent class class SuperGeek { // Parent class constructor, executed when an // instance of SuperGeek or its subclass is created SuperGeek() { print("You are inside the Parent constructor!!"); } } // Defining the child class that // inherits from SuperGeek class SubGeek extends SuperGeek { // Child class constructor, executed after the parent // constructor when an instance of SubGeek is created SubGeek() { print("You are inside the Child constructor!!"); } } void main() { // Creating an instance of SubGeek // This will first call the parent class // constructor and then the child class constructor SubGeek geek = SubGeek(); } Output:You are inside the Parent constructor!!You are inside the Child constructor!!Accessing parent class variablesExample : Dart // Defining the parent class class SuperGeek { // Declaring an instance variable // in the parent class String geek = "Geeks for Geeks"; } // Defining the child class that // inherits from SuperGeek class SubGeek extends SuperGeek { // Method to access and print // the parent class variable void printInfo() { // 'super' keyword is used to // access the parent class variable print(super.geek); } } void main() { // Creating an instance of // the child class SubGeek geek = SubGeek(); // Calling the child class method // to print the parent class variable geek.printInfo(); } Output:Geeks for GeeksAccessing parent class methodsExample : Dart // Defining the parent class class SuperGeek { // Method in the parent class void printInfo() { print("Welcome to Gfg!!\nYou are inside the parent class."); } } // Defining the child class that // inherits from SuperGeek class SubGeek extends SuperGeek { // Method in the child class void info() { print("You are calling a method of the parent class."); // Calling the parent class // method using 'super' super.printInfo(); } } void main() { // Creating an instance of the child class SubGeek geek = SubGeek(); // Calling the method in the child class // that invokes the parent class method geek.info(); } Output:You are calling method of parent class.Welcome to Gfg!!You are inside parent class.this Keyword in Dart While super keyword is used to call parent class, this keyword is used to call the class itself. Advantages of this keywordIt can be used to call instance, the current class.It can be used to set the values of the instance variable.It can be used to return the current class instance.Using this keyword in DartExample : Dart // Defining a class class Geek { // Declaring an instance variable String geek_info = ""; // Defining a parameterized constructor Geek(String info) { // Assigning the parameter value to the // instance variable using 'this' keyword this.geek_info = info; } // Method to print the information void printInfo() { print("Welcome to $geek_info"); } } void main() { // Creating an instance of the Geek class // and passing a value to the constructor Geek geek = Geek("Geeks for Geeks"); // Calling the method to print the information geek.printInfo(); } Output:Welcome to Geeks for GeeksTo know more about this keyword refer this article: Dart - this keyword.ConclusionUse the keyword super to access variables, methods, and constructors from the parent class.Use this to refer to the instance variables and methods of the current class.Both keywords contribute to better structuring and understanding of class relationships in Dart. 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