Newbie got stuck in Hibernate "Hello World"

[Tirthankar Mukherjee]

Dept.java

 
package hello;

public class Dept {
	String dept_id;
	String dept_name;
	String dept_job;

	public String getDept_id() {
		return dept_id;
	}

	public void setDept_id(String dept_id) {
		this.dept_id = dept_id;
	}

	public String getDept_name() {
		return dept_name;
	}

	public void setDept_name(String dept_name) {
		this.dept_name = dept_name;
	}

	public String getDept_job() {
		return dept_job;
	}

	public void setDept_job(String dept_job) {
		this.dept_job = dept_job;
	}

}

FirstExample.java

  
package hello;

import org.hibernate.Session;
import org.hibernate.SessionFactory;
import org.hibernate.cfg.Configuration;

public class FirstExample {
	
	public static void main(String[] args) {
  Session session = null ;
		try {
			
			SessionFactory sessionFactory = new Configuration().configure().buildSessionFactory();
			//SessionFactory sessionFactory = HibernateUtil.getSessionFactory();
			session = sessionFactory.openSession();
			System.out.println("Inserting Record");
			Dept dept  = new Dept();
		    dept.setDept_id("5");
		    dept.setDept_name("Accounts");
		    dept.setDept_job("Taking care of all accounts");
		    session.save(dept);
			System.out.println("Done");
		} catch (Exception e) {
			System.out.println("Error");
			System.out.println(e.getMessage());
		} finally {
			// Actual contact insertion will happen at this step
			session.flush();
			session.close();

		}

	}
}
 

hibernate.cfg.xml

   
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE hibernate-configuration PUBLIC
		"-//Hibernate/Hibernate Configuration DTD 3.0//EN"
		"http://hibernate.sourceforge.net/hibernate-configuration-3.0.dtd">
<hibernate-configuration>
    <session-factory>
        <property name="hibernate.connection.driver_class">oracle.jdbc.driver.OracleDriver</property>
        <property name="hibernate.connection.password">tiger</property>
        <property name="hibernate.connection.url">jdbc:oracle:thin:@localhost:1521:xe</property>
        <property name="hibernate.connection.username">scott</property>
        <property name="hibernate.default_schema">scott</property>
        <property name="hibernate.dialect">org.hibernate.dialect.Oracle10gDialect</property>
        <property name="show_sql">true</property>
        <property name="format_sql">true</property>
        <mapping resource="hello/Dept.hbm.xml"/>
    </session-factory>
</hibernate-configuration>

 

Dept.hbm.xml

  
<?xml version="1.0"?>
<!DOCTYPE hibernate-mapping PUBLIC
	"-//Hibernate/Hibernate Mapping DTD 3.0//EN"
	"http://hibernate.sourceforge.net/hibernate-mapping-3.0.dtd">
<hibernate-mapping package="hello">
	<class name="hello.Dept" table="dept">
		<id name="dept_id" type="string" column="dept_id">
			<generator class="assigned" />
		</id>
		<property name="dept_name">
			<column name="dept_name" />
		</property>
		<property name="dept_job">
			<column name="dept_job" />
		</property>
	</class>
</hibernate-mapping>

Eclipse console output

 
Jan 28, 2010 4:54:00 PM org.hibernate.cfg.Environment <clinit>
INFO: Hibernate 3.2.5
Jan 28, 2010 4:54:00 PM org.hibernate.cfg.Environment <clinit>
INFO: hibernate.properties not found
Jan 28, 2010 4:54:00 PM org.hibernate.cfg.Environment buildBytecodeProvider
INFO: Bytecode provider name : cglib
Jan 28, 2010 4:54:00 PM org.hibernate.cfg.Environment <clinit>
INFO: using JDK 1.4 java.sql.Timestamp handling
Jan 28, 2010 4:54:00 PM org.hibernate.cfg.Configuration configure
INFO: configuring from resource: /hibernate.cfg.xml
Jan 28, 2010 4:54:00 PM org.hibernate.cfg.Configuration getConfigurationInputStream
INFO: Configuration resource: /hibernate.cfg.xml
Jan 28, 2010 4:54:00 PM org.hibernate.cfg.Configuration addResource
INFO: Reading mappings from resource : hello/Dept.hbm.xml
Jan 28, 2010 4:54:00 PM org.hibernate.cfg.HbmBinder bindRootPersistentClassCommonValues
INFO: Mapping class: hello.Dept -> dept
Jan 28, 2010 4:54:00 PM org.hibernate.cfg.Configuration doConfigure
INFO: Configured SessionFactory: null
Jan 28, 2010 4:54:00 PM org.hibernate.connection.DriverManagerConnectionProvider configure
INFO: Using Hibernate built-in connection pool (not for production use!)
Jan 28, 2010 4:54:00 PM org.hibernate.connection.DriverManagerConnectionProvider configure
INFO: Hibernate connection pool size: 20
Jan 28, 2010 4:54:00 PM org.hibernate.connection.DriverManagerConnectionProvider configure
INFO: autocommit mode: false
Jan 28, 2010 4:54:00 PM org.hibernate.connection.DriverManagerConnectionProvider configure
INFO: using driver: oracle.jdbc.driver.OracleDriver at URL: jdbc:oracle:thin:@localhost:1521:xe
Jan 28, 2010 4:54:00 PM org.hibernate.connection.DriverManagerConnectionProvider configure
INFO: connection properties: {user=scott, password=****}
Jan 28, 2010 4:54:00 PM org.hibernate.cfg.SettingsFactory buildSettings
INFO: RDBMS: Oracle, version: Oracle Database 10g Express Edition Release 10.2.0.1.0 - Production
Jan 28, 2010 4:54:00 PM org.hibernate.cfg.SettingsFactory buildSettings
INFO: JDBC driver: Oracle JDBC driver, version: 10.2.0.1.0XE
Jan 28, 2010 4:54:00 PM org.hibernate.dialect.Dialect <init>
INFO: Using dialect: org.hibernate.dialect.Oracle10gDialect
Jan 28, 2010 4:54:00 PM org.hibernate.transaction.TransactionFactoryFactory buildTransactionFactory
INFO: Using default transaction strategy (direct JDBC transactions)
Jan 28, 2010 4:54:00 PM org.hibernate.transaction.TransactionManagerLookupFactory getTransactionManagerLookup
INFO: No TransactionManagerLookup configured (in JTA environment, use of read-write or transactional second-level cache is not recommended)
Jan 28, 2010 4:54:00 PM org.hibernate.cfg.SettingsFactory buildSettings
INFO: Automatic flush during beforeCompletion(): disabled
Jan 28, 2010 4:54:00 PM org.hibernate.cfg.SettingsFactory buildSettings
INFO: Automatic session close at end of transaction: disabled
Jan 28, 2010 4:54:00 PM org.hibernate.cfg.SettingsFactory buildSettings
INFO: JDBC batch size: 15
Jan 28, 2010 4:54:00 PM org.hibernate.cfg.SettingsFactory buildSettings
INFO: JDBC batch updates for versioned data: disabled
Jan 28, 2010 4:54:00 PM org.hibernate.cfg.SettingsFactory buildSettings
INFO: Scrollable result sets: enabled
Jan 28, 2010 4:54:00 PM org.hibernate.cfg.SettingsFactory buildSettings
INFO: JDBC3 getGeneratedKeys(): disabled
Jan 28, 2010 4:54:00 PM org.hibernate.cfg.SettingsFactory buildSettings
INFO: Connection release mode: auto
Jan 28, 2010 4:54:00 PM org.hibernate.cfg.SettingsFactory buildSettings
INFO: Default schema: scott
Jan 28, 2010 4:54:00 PM org.hibernate.cfg.SettingsFactory buildSettings
INFO: Default batch fetch size: 1
Jan 28, 2010 4:54:00 PM org.hibernate.cfg.SettingsFactory buildSettings
INFO: Generate SQL with comments: disabled
Jan 28, 2010 4:54:00 PM org.hibernate.cfg.SettingsFactory buildSettings
INFO: Order SQL updates by primary key: disabled
Jan 28, 2010 4:54:00 PM org.hibernate.cfg.SettingsFactory buildSettings
INFO: Order SQL inserts for batching: disabled
Jan 28, 2010 4:54:00 PM org.hibernate.cfg.SettingsFactory createQueryTranslatorFactory
INFO: Query translator: org.hibernate.hql.ast.ASTQueryTranslatorFactory
Jan 28, 2010 4:54:00 PM org.hibernate.hql.ast.ASTQueryTranslatorFactory <init>
INFO: Using ASTQueryTranslatorFactory
Jan 28, 2010 4:54:00 PM org.hibernate.cfg.SettingsFactory buildSettings
INFO: Query language substitutions: {}
Jan 28, 2010 4:54:00 PM org.hibernate.cfg.SettingsFactory buildSettings
INFO: JPA-QL strict compliance: disabled
Jan 28, 2010 4:54:00 PM org.hibernate.cfg.SettingsFactory buildSettings
INFO: Second-level cache: enabled
Jan 28, 2010 4:54:00 PM org.hibernate.cfg.SettingsFactory buildSettings
INFO: Query cache: disabled
Jan 28, 2010 4:54:00 PM org.hibernate.cfg.SettingsFactory createCacheProvider
INFO: Cache provider: org.hibernate.cache.NoCacheProvider
Jan 28, 2010 4:54:00 PM org.hibernate.cfg.SettingsFactory buildSettings
INFO: Optimize cache for minimal puts: disabled
Jan 28, 2010 4:54:00 PM org.hibernate.cfg.SettingsFactory buildSettings
INFO: Structured second-level cache entries: disabled
Jan 28, 2010 4:54:00 PM org.hibernate.cfg.SettingsFactory buildSettings
INFO: Echoing all SQL to stdout
Jan 28, 2010 4:54:00 PM org.hibernate.cfg.SettingsFactory buildSettings
INFO: Statistics: disabled
Jan 28, 2010 4:54:00 PM org.hibernate.cfg.SettingsFactory buildSettings
INFO: Deleted entity synthetic identifier rollback: disabled
Jan 28, 2010 4:54:00 PM org.hibernate.cfg.SettingsFactory buildSettings
INFO: Default entity-mode: pojo
Jan 28, 2010 4:54:00 PM org.hibernate.cfg.SettingsFactory buildSettings
INFO: Named query checking : enabled
Jan 28, 2010 4:54:00 PM org.hibernate.impl.SessionFactoryImpl <init>
INFO: building session factory
Exception in thread "main" java.lang.NullPointerException
	at hello.FirstExample.main(FirstExample.java:28)

Detp table

   
create table dept(
dept_id varchar2(20) primary key,
dept_name varchar2(20) not null unique,
dept_job varchar2(20)
);
 

I cant get this code working. Please Help. Thanks in Advance

[Tirthankar Mukherjee]

nway solved it ...

replaced cglib-2.2.jar with cglib-2.1.3.jar and it worked ...

If any one knows why .. please let me know ...