Java constructor inheritance?

Question

I always thought that constructors aren\'t inherited, but look at this code:

class Parent {
    Parent() {
        S         


        

Answer 1

public class HelloWorld{

    private static class A {
        A(String x) {
            System.out.println(x);
        }
    }
    
    private static class B extends A {
        
    }

    public static void main(String []args){
        B b =  new B();
        System.out.println("Hello World");
    }
}

Output:

/*
error: constructor A in class A cannot be applied to given types;
    private static class B extends A {
                   ^
  required: String
  found: no arguments
  reason: actual and formal argument lists differ in length
1 error
*/

So what it means is constructors are never inherited

Hence, what happens here is class B's argument less constructor tries to call class A's argument less contructor, But it didn't find that hence gives it gives error.

If we add argument less constructor in class A, then this program will work properly.