javax.naming.directory.SchemaViolationException：[LDAP：错误代码65 - 对象类违规];

Here in this code, I am not able to add one user to group. Here uid is user. Here cn=citizens,cn=doit,o=evault is group Full DN and also instead of member I tried with memberOf. But still it is showing same Exception.Here in this code, I am not able to add one use