Question Given a string, return a new string made of 3 copies of the last 2 chars of the original string. The string's length will be at least 2. Answer public class X121 { public static void main(String[] args) { String str = ""; str = "Hello"; System.out.printf("[str = %s]\n", str); System.out.println(extraEnd(str)); str = "Hi"; System.out.printf("[str = %s]\n", str); System.out.println(extraE..
