Given four int variables that have been declared and given values, octet1, octet2, octet3, and octet4, write a String expression in Java whose value is the String equivalent of each of these variables joined by a single period (.) So if octet1, octet2, octet3, and octet4, had the values 129, 42, 26, and 212 the expressions value would be 129.42.26.212. Alternatively, if octet1, octet2, octet3, and octet4, had the values 192, 168, 1 and 44 the expressions value would be 192.168.1.44.