2 Errors in Java debugging Assignment, please help :-)?

Hi everyone

This program is not running due to 2 errors could someone please assist me? Thanks :-)

Code: import java.io.BufferedReader;

import java.io.IOException;

import java.io.InputStreamReader;

public class UserList

{

public static void main(String[] args) throws Exception

{

String str1, str2 = "username";

int index;

int initialCapacity = 10;

BufferedReader dataIn = new BufferedReader(new InputStreamReader(System.in));

ArrayList(String) users = new ArrayList(String)();

System.out.print("Enter a user name: ");

str1 = dataIn.readLine();

while(str1.length() > 0)

{

if(str1 == str2);

System.out.println("That user name is NOT allowed!");

else

{

if(users.size() == initialCapacity)

{

System.out.println("List is full!");

System.out.println("Last entry is "+users.get(initialCapacity));

}

else

if(!users.contains(str1))

{

users.add(str1);

System.out.println("User \""+str1+"\" added to user list.");

}

else

System.out.println("User \""+str1+"\" already in user list.");

}

System.out.print("\nEnter a user name: ");

str1 = dataIn.readLine();

}

System.out.println("Program complete.");

}

}

Errors: C:\Course Technology\85985-0d\Chapter09\v4.1\UserList.java:22: ';' expected

ArrayList(String) users = new ArrayList(String)();

^

C:\Course Technology\85985-0d\Chapter09\v4.1\UserList.java:31: 'else' without 'if'

else

^

2 errors

Thank You :-)