autoboxing

public class TestAutoBoxTrip {

public  static void main(String...args){
Integer a =1;
Integer b =2;
Integer c =3;
Integer d =3;
Integer e =321;
Integer f =321;
Long g =3L;

System.out.print("1:");System.out.println(c==d);
System.out.print("2:");System.out.println(e==f);
System.out.print("3:");System.out.println(c==(a+b));
System.out.print("4:");System.out.println(c.equals(a+b));
System.out.print("5:");System.out.println(g==(a+b));
System.out.print("6:");System.out.println(g.equals(a+b));
}
}