Can overridden methods differ in return type?

Question

Can overridden methods have different return types?

Answer 1

yes It is possible.. returns type can be different only if parent class method return type is
a super type of child class method return type..
means

class ParentClass {
    public Circle() method1() {
        return new Cirlce();
    }
}

class ChildClass extends ParentClass {
    public Square method1() {
        return new Square();
    }
}

Class Circle {

}

class Square extends Circle {

}

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If this is the then different return type can be allowed...