Hello Everyone!
I am getting this exception in my java and hibernate code. Please share some ideas how to handle this.

org.hibernate.exception.JDBCConnectionException: Error calling Driver#connect
at org.hibernate.exception.internal.SQLStateConversionDelegate.convert(SQLStateConversionDelegate.java:132)
at org.hibernate.engine.jdbc.connections.internal.BasicConnectionCreator$1$1.convert(BasicConnectionCreator.java:118)
at org.hibernate.engine.jdbc.connections.internal.BasicConnectionCreator.convertSqlException(BasicConnectionCreator.java:140)
at org.hibernate.engine.jdbc.connections.internal.DriverConnectionCreator.makeConnection(DriverConnectionCreator.java:58)
at org.hibernate.engine.jdbc.connections.internal.BasicConnectionCreator.createConnection(BasicConnectionCreator.java:75)
at org.hibernate.engine.jdbc.connections.internal.DriverManagerConnectionProviderImpl.configure(DriverManagerConnectionProviderImpl.java:106)
at org.hibernate.boot.registry.internal.StandardServiceRegistryImpl.configureService(StandardServiceRegistryImpl.java:111)
at org.hibernate.service.internal.AbstractServiceRegistryImpl.initializeService(AbstractServiceRegistryImpl.java:234)
at org.hibernate.service.internal.AbstractServiceRegistryImpl.getService(AbstractServiceRegistryImpl.java:206)
at org.hibernate.engine.jdbc.internal.JdbcServicesImpl.buildJdbcConnectionAccess(JdbcServicesImpl.java:260)
at org.hibernate.engine.jdbc.internal.JdbcServicesImpl.configure(JdbcServicesImpl.java:94)
at org.hibernate.boot.registry.internal.StandardServiceRegistryImpl.configureService(StandardServiceRegistryImpl.java:111)
at org.hibernate.service.internal.AbstractServiceRegistryImpl.initializeService(AbstractServiceRegistryImpl.java:234)

Here is my code!

try {

int number = 0;


System.out.println("-------starting while loop------");
while (clientSocket.isConnected()) {

System.out.println("====in the while loop====");
InputStream is = clientSocket.getInputStream();
InputStreamReader isr = new InputStreamReader(is);
BufferedReader bfr = new BufferedReader(isr);



String n = bfr.readLine();


System.out.println("Read Line============================= " +n);



char[] charArray = n.toCharArray();


for(int i=0;i<charArray.length;i++){
if((charArray[i]=='M')){

i=i+1;
while (!(charArray[i]=='K')) {

meter_no=((int)charArray[i])-47;
System.out.println(i+"=====k==values====="+charArray[i]);
i=i+1;
}
if(charArray[i]=='K'){


ArrayList<Integer> reading = new ArrayList<Integer>();
//int k=0;
i=i+1;
while (!(charArray[i]=='C')) {

reading.add((int)charArray[i]);

i=i+1;
}


CalculateBill cb = new CalculateBill();
System.out.println(2);
meter_current_eading = cb.calculate(reading);

Date date = new Date();
SimpleDateFormat sdf = new SimpleDateFormat(
"yyyy/MM/dd HH:mm:ss");
readDate = sdf.format(date);



Map map = new HashMap();
map.put("meter_id", meter_no);

System.out.println("Meeeteer no. " +meter_no);

//sessionFac = new AnnotationConfiguration().configure().buildSessionFactory();
SessionFactory sessionFac = new AnnotationConfiguration().configure().buildSessionFactory();
Session session = sessionFac.openSession();
Transaction tran = session.beginTransaction();


m.setMru_id(mruID);
m.setMeter_id(meter_no);
m.setMeter_reading(meter_current_eading);
m.setReading_date(readDate);



session.save(m);
if (!tran.wasCommitted())

tran.commit();
session.flush();
session.close();
sessionFac.close();

}


}
}



do {


number = bfr.read();
((MruToDB) currentThread()).kill();

} while (number == -1);
System.out.println("===========comig down==========");


}



} catch (Exception e) {
/*session.close();
sessionFac.close();*/
e.printStackTrace();
System.out.println("CLIENT THREAD:Client thread ended");
}