How We Call the parentclass constructor in child class?.describe with Example

Question

hi we are facing a problem to call the parent class constructor in child class

Vulpes · Answer

Oops, just noticed that the question is about Java rather than C# ! In that case, Murali's example will become: import java.io.*; public class Parent { public Parent() { System.out.println("Parent Constructor called"); } public Parent (String message) { System.out.println(message); } public static void main(String[] args) { Child c = new Child(); Child c2 = new Child("Hello from Parent"); } } class Child extends Parent { public Child() { super(); // optional System.out.println("Child Constructor called"); } public Child(String message) { super(message); System.out.println("Child Constructor called"); } }

Vulpes · Answer

I'd just like to add that Child's parameterless constructor wll still call Parent's parameterless constructor even if you don't chain : base() to its definition. Murali has just included it for clarity.

Muralidharan Deenathayalan · Answer

public class Parent { public Parent() { Console .WriteLine( "Parent Constructor called" ); } public Parent ( string message) { Console .WriteLine(message); } public void Display() { } } public class Child : Parent { public Child() : base () { Console .WriteLine( "Child Constructor called" ); } public Child( string message) : base (message) { Console .WriteLine( "Child Constructor called" ); } }

How We Call the parentclass constructor in child class?.describe with Example

Answers (3)