public static void main(String[] args) {
Integer i1 = 100;
Integer i2 = 100;
if (i1 == i2)
System.out.println("i1 == i2");
else
System.out.println("i1 != i2");
Integer i3 = 200;
Integer i4 = 200;
if (i3 == i4)
System.out.println("i1 == i2");
else
System.out.println("i1 != i2");
}
}