java authentication via lhc.jar

I am following the instructions on Page 68 of "IOS Application Program Interfaces".  I

re-created the java program and now I am trying to compile...I set my classpath to include
lhc.jar and commons-httpclient-3.0.1.jar. 

The compiler returns the error:

lawsonLogin.java:18: cannot resolve symbol
symbol  : method doLogin (java.lang.String,java.lang.String,char)
location: class com.lawson.lawsec.authen.httpconnection.LawsonHttpConnection
                        String result = lhc.doLogin(vUrl, vUserName, vPassword);
                                           ^
1 error

Line 18 Looks like this:
String result = lhc.doLogin(vUrl, vUserName, vPassword);

Am I missing a jar file?
Is this a bug in Lawson?
Is the documentation wrong?