Creating an instance of the KerberosSSOValidator in PeopleCode

How do I load the KerberosSSOValidator class in peoplecode? Everytime I try the supplied code from your Kerberos post, the peoplecode stops executing as soon as I call getInstance().

&validator = GetJavaClass("com.peoplesoft.pt.desktopsso.kerberos.KerberosSSOValidator").getInstance();

I've also tried:

&validator = GetJavaClass("com.peoplesoft.pt.desktopsso.kerberos.KerberosSSOValidator");

If &traceFile.Isopen Then

     &traceFile.Writeline("Validator:");

     &traceFile.Writeline(&validator);

End-If;

           

&validator = &validator.getInstance();

If &traceFile.Isopen Then

     &traceFile.Writeline("Test");

End-If;

I get past the first trace statement but don't get the second one.