regarding constructors

i was developing the below code....

class P {
     //public P(){}
     public P(int i) {
 
     }
 }
 
 class D extends P {
     public D(){ // default constructor must be defined in super class
 
     }
 }
 
 public class agf {      
     public static void main(String[] args) {
 
     }
 }
 

Now in class p explicit parametrized constructor is defined and in class D default constructor is defined but it is still showing the compile time error ,please explain

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