Answer:   There is no copy constructor in java. However, we can copy the values from one object to another like copy constructor in C++.
There are many ways to copy the values of one object into another in java. They are:
o By constructor
o By assigning the values of one object into another
o By clone() method of Object class
In this example, we are going to copy the values of one object into another using java constructor.
1. //Java program to initialize the values from one object to another
2. class Student6{
3. int id;
4. String name;
5. //constructor to initialize integer and string
6. Student6(int i,String n){
7. id = i;
8. name = n;
9. }
10. //constructor to initialize another object
11. Student6(Student6 s){
12. id = s.id;
13. name =s.name;
14. }
15. void display(){System.out.println(id+" "+name);}
16.
17. public static void main(String args[]){
18. Student6 s1 = new Student6(111,"Karan");
19. Student6 s2 = new Student6(s1);
20. s1.display();
21. s2.display();
22. }
23. }
Test it Now
Output:
111 Karan
111 Karan