default constructor and arguments

class Parent {
	//Parent(){}
	Parent(){}
    Parent(int number) {
    }
}
 
class Child extends Parent {
    Child(int a, int b) {
    }
}

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for above code do not i need to give  constructor as below with two arguments?


      Parent(int a, int b){}
//if i give constructor like above does it still called default constructor?

what is the meaning of below sentence?

4. The default constructor is only generated by the compiler:
If we explicitly write a constructor that looks exactly the same as the default constructor, it is NOT called the default constructor.

https://www.codejava.net/java-core/the-java-language/9-rules-about-constructors-in-java
Please advise