hibernate - hbm2ddl.auto is not working -

i have created 1 entity class emp, using hbm2ddl.auto create tables, below entity related table creating properly, before table in database more tables there, if use property hbm2ddl.auto create need drop total schema(total tables) , created entity related table freshly, old tables not deleted. tables there , new table created, not getting create functionality can please clarify doubt. used version 3.6.4.

emp.java

@entity  @table(name="employe")  public class emp {      @id      int empid;      string ename;      public int getempid() {          return empid;      }      public void setempid(int empid) {          this.empid = empid;      }      public string getename() {          return ename;      }      public void setename(string ename) {         this.ename = ename;      }  } 

configuration.cfg.xml

<property name="connection.driver_class">com.mysql.jdbc.driver</property> <property name="connection.url">jdbc:mysql://localhost:3306/sample</property> <property name="connection.username">root</property> <property name="connection.password">sun</property> <property name="connection.pool_size">1</property> <property name="dialect">org.hibernate.dialect.mysqldialect</property> <property name="cache.provider_class">org.hibernate.cache.nocacheprovider</property> <property name="show_sql">true</property> <property name="hbm2ddl.auto">create</property> <mapping class="in.hib.emp" /> 

my main program this

public class hibapplication {      public static void main(string[] args) {          emp e=new emp();          e.setempid(2);          e.setename("pavai");          configuration cfg=new configuration().configure();          sessionfactory sf=cfg.buildsessionfactory();          session session=sf.opensession();          session.begintransaction();          session.save(e);          session.gettransaction().commit();              }  } 

dear there 4 possible values can used hbm2ddl.auto 4 defined below

1. validate- checks table , columns existing in database or not if table not exist or column not exist exception thrown.

2. create - if value create hibernate drops table if exist , creates new table , executes operation, not used in real time old data lost database.

3. update - if values update hibernate uses existing table , if table not exist creates new table , executes operation. , used in real time , recommended.

4. create-drop - if value create-drop hibernate creates new table , after executing operation drops table, value used while testing hibernate code.

thanks njoy coding