String.format - returns a formatted String value. ex) String.format("The answer is %d", 3) returns "The answer is 3" - can be used with System.out.println ex) System.out.println(String.formate("The answer is %d", 3)) String.split("delimiter") - splits the String value using delimiter and returns a String type array. String hi = "Hi Hello"; String[] prac = hi.split("H"); //prac = ["", "i ", "ello..