Can the overridden methods in case of inheritance have different return type ?

  • 4

    Answer : By default we tend to say NO , overridden method in sub class should have same signature as that of in base class.

    But this is half correct , Correct answer is : Overridden method can have different return type only in case if they are returning the sub-type.

    Example :

    public class base {

    base show(){

    System.out.println("base class");

    return new base();


    public class sub extends base{

    sub show(){

    System.out.println("sub class");
    return new sub();


    public class Test{

    public static void main(String []args) {

        sub obj=new sub();

    In above example show() method return instance of that class , still its an overridden method.

  • 1

    Yes that is correct. An overriding method can also return a subtype of the type returned by the overridden method. This subtype is called a covariant return type.

  • 0

    When return type of a method in child class is not same as the base class method return type, then it is no more a overriding and compiler will complain it as a wrong. When compiler allows the subtype as return type then it is following SOLID principle.

Log in to reply

Looks like your connection to LeetCode Discuss was lost, please wait while we try to reconnect.