The super keyword is another important one. This is a reference variable that is used to call the immediate parent class. This keyword is expensive when we talk about Inheritance and Polymorphism. There are three uses of the super keyword.
- super with variables
super with constructorssuper
Super with variables
- If you use super with instance variables, it will refer to the variables of the immediate parent class.
- Look at the following example.
Super with constructors
- We can use the super keyword to invoke the constructor of the immediate parent class
- Once you instantiate a class, the compiler calls the default constructor of that class.
Super with method overriding
- If you want to call methods in the parent class, you can use super keyword.
- In overriding, it will call the child class method instead of the parent class.
- Look at the following example.
Use of super keyword in Java
Reviewed by Ravi Yasas
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Reviewed by Ravi Yasas
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