Why are they false and true?

Question

public class Equivalence
{
public static void main(String[] args) {
Integer n1 = new Integer (47);
Integer n2 = new Integer (47);
System.out.println(n1 == n2);
System.out.println(n1 != n2);
}
}

Answer 1

n1 and n2 store the reference code of different Integer class object like
n1= @123Integer
n2=@124Integer
Than
n1 ==n2 //is false
and
n1!=n2 //is true