the UserAccount.java file was just flat out riddled with errors, I tried to correct some but ulitmately you need to learn to take more time with the java syntax
here are some corrections that should hopefully get you on your way:
Follows these steps in order on file UserAccount.java
1.) Remove the curly brace "}" on line 13 and move it to line 103
2.) change line 15 from "userAccount()" to "UserAccount()"
3.) change line 68 from "word,append" to "word.append"
4.) add a "+" to the end of line 97 and 98
5.) change getUserNameV1Mirror()"\n" to getUserNameV1Mirror()+"\n"
6.) remove the asterick (*) from line 100 and change it to a +
7.) change line 44 "Stringbuffer" to "StringBuffer"
8.) change line 61 from "lastname" to "lastName"
I am not going to go any further on this as there were still plenty of errors