my answer

Solving the problem indicated by  @JB_Nizet I faced a new error about the validation.
(Note: The problem of the space was a myeclipse bug. I tried with a project and it was myeclipse which added that evil space.) I added the following line to hibernate.cfg.xml and the problem was partly solved. The new error was (%%%% Error Creating SessionFactory %%%%
org.hibernate.HibernateException: Error applying BeanValidation relational constraints)

    <property name="javax.persistence.validation.mode">none</property>

The new error was hibernate sql query error. The id should have been assigned so I changed Hitest.hbm.xml to

    <?xml version="1.0" encoding="utf-8"?>
    <!DOCTYPE hibernate-mapping PUBLIC "-//Hibernate/Hibernate Mapping DTD 3.0//EN"
    "http://www.hibernate.org/dtd/hibernate-mapping-3.0.dtd">
    <!--
        Mapping file autogenerated by MyEclipse Persistence Tools
    -->
    <hibernate-mapping>
        <class name="sor.hibernate.Hitest" table="hitest" catalog="test">
            <id name="id" type="java.lang.Integer">
                <column name="id" />
                <generator class="increment" />
            </id>
            <property name="greeting" type="java.lang.String">
                <column name="greeting" length="200" />
            </property>
            <property name="date" type="java.util.Date">
                <column name="date" length="10" />
            </property>
            <property name="ref" type="java.lang.Integer">
                <column name="ref" />
            </property>
        </class>
    </hibernate-mapping>