I am trying to use hibernate with DB2 8.1 database . I am facing problem while executing condtional query statement

the code is pasteed below
String testsql = " from RlaLic where LIC_NUMB_1500 = " + licno ;
RlaLic licd = (RlaLic) session.createQuery(testsql).uniqueResult();


the statement is working with condition hardcoded in statement

from RlaLic where LIC_NUMB_1500 = '0310012349'

but

from RlaLic where LIC_NUMB_1500 = " + licno is not working .

Even i tried with

("from RlaLic where LIC_NUMB_1500 = ? ").setString(0,licno).uniqueResult();

but its not working . i am getting null object .




what may be the problem ? any idea.