Java | Functions | Question 9

Predict the output of the following program.

class Test
{

    public static void main(String[] args)
    {
        String obj1 = new String("geeks");
        String obj2 = new String("geeks");

        if(obj1.hashCode() == obj2.hashCode())
            System.out.println("hashCode of object1 is equal to object2");

        if(obj1 == obj2)
            System.out.println("memory address of object1 is same as object2");

        if(obj1.equals(obj2))
            System.out.println("value of object1 is equal to object2");
    }
}

(A)

hashCode of object1 is equal to object2
value of object1 is equal to object2

(B)

hashCode of object1 is equal to object2
memory address of object1 is same as object2
value of object1 is equal to object2

(C)

memory address of object1 is same as object2
value of object1 is equal to object2

Answer: (A)

Explanation:
obj.hashCode() function returns a 32-bit hash code value for the object ‘obj’.
obj1.equals(obj2) function returns true if value of obj1 is equal to obj2.
obj1 == obj2 returns true if obj1 refers to same memory address as obj2.


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