java - Best way to create a child object from its parent -

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• java: creating subclass object parent object 11 answers

which best way create child given parent data? ok have method parents values on child class as:

public class child extends person {   public child(parent p) {     this.setparentfield1(p.getparentfield1());     this.setparentfield2(p.getparentfield2());     this.setparentfield3(p.getparentfield3());     // other parent fields.   } } 

to copy parent data ti child object?

child child = new child(p); 

i recommend creating constructor in parent class accepts object of type parent.

public class child extends parent {   public child(parent p) {      super(p);   } }  public class parent {    public parent(parent p){       //set fields here    } }