Hibernate Exception Failed to load class "org.slf4j.impl.StaticLoggerBinder"

Question

I want to execute an update query in my oracle database. But I'm getting the following error:

SLF4J: Failed to load class "org.slf4j.impl.StaticLoggerBinder".
SLF4J: Defaulting to no-operation (NOP) logger implementation
SLF4J: See http://www.slf4j.org/codes.html#StaticLoggerBinder for further details.
WARNING: An illegal reflective access operation has occurred
WARNING: Illegal reflective access by org.dom4j.io.SAXContentHandler (file:/C:/hibernate/lib/required/dom4j-1.6.1.jar) to method com.sun.org.apache.xerces.internal.parsers.AbstractSAXParser$LocatorProxy.getEncoding()
WARNING: Please consider reporting this to the maintainers of org.dom4j.io.SAXContentHandler
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Hibernate: update ëmp1 set ename=?, esal=?, eaddr=? where eno=?
Employee updation failure
org.hibernate.exception.SQLGrammarException: Could not execute JDBC batch update
    at org.hibernate.exception.SQLStateConverter.convert(SQLStateConverter.java:92)
    at org.hibernate.exception.JDBCExceptionHelper.convert(JDBCExceptionHelper.java:66)
    at org.hibernate.jdbc.AbstractBatcher.executeBatch(AbstractBatcher.java:275)
    at org.hibernate.engine.ActionQueue.executeActions(ActionQueue.java:268)
    at org.hibernate.engine.ActionQueue.executeActions(ActionQueue.java:185)
    at org.hibernate.event.def.AbstractFlushingEventListener.performExecutions(AbstractFlushingEventListener.java:321)
    at org.hibernate.event.def.DefaultFlushEventListener.onFlush(DefaultFlushEventListener.java:51)
    at org.hibernate.impl.SessionImpl.flush(SessionImpl.java:1216)
    at org.hibernate.impl.SessionImpl.managedFlush(SessionImpl.java:383)
    at org.hibernate.transaction.JDBCTransaction.commit(JDBCTransaction.java:133)
    at com.durgasoft.test.Test.main(Test.java:33)
Caused by: java.sql.BatchUpdateException: ORA-00942: table or view does not exist

    at oracle.jdbc.driver.OraclePreparedStatement.executeBatch(OraclePreparedStatement.java:10296)
    at oracle.jdbc.driver.OracleStatementWrapper.executeBatch(OracleStatementWrapper.java:216)
    at org.hibernate.jdbc.BatchingBatcher.doExecuteBatch(BatchingBatcher.java:70)
    at org.hibernate.jdbc.AbstractBatcher.executeBatch(AbstractBatcher.java:268)
    ... 8 more

Files in the project:

Pojo class code Employee.java

package com.MyApp.pojo;

public class Employee {
    private int eno;
    private String ename;
    private float esal;
    private String eaddr;
    
    
    // getter and setters
}

Main method Test.java

package com.durgasoft.test;

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

import com.MyApp.pojo.Employee;

public class Test {

    public static void main(String[] args) {
        
        Configuration config=null;
        SessionFactory sessionFactory=null;
        Session session=null;
        Transaction tx=null;
        
        try 
        {
            config = new Configuration();
            config.configure();
            sessionFactory=config.buildSessionFactory();
            session=sessionFactory.openSession();
            tx=session.getTransaction();
            tx.begin();
            Employee emp=new Employee();
            emp.setEno(111);
            emp.setEname("XXX");
            emp.setEsal(1000);
            emp.setEaddr("ABCD");
            session.update(emp);
            tx.commit();
            System.out.println("Employee Updated Successfully");
            
            
        }
        catch(Exception e)
        {
            tx.rollback();
            System.out.println("Employee updation failure");
            e.printStackTrace();
            
        }
        finally 
        {
            
            session.close();
            sessionFactory.close();
        }

    }

}

Hibernate configuration file hibernate.cfg.xml

<?xml version="1.0" encoding="UTF-8"?>
 <!DOCTYPE hibernate-configuration PUBLIC
    "-//Hibernate/Hibernate Configuration DTD 3.0//EN"
    "http://www.hibernate.org/dtd/hibernate-configuration-3.0.dtd">
    <hibernate-configuration>
        <session-factory>
            <property name="org.hibernate.driver_Class">oracle.jdbc.OracleDriver</property>
            <property name="hibernate.connection.url">jdbc:oracle:thin:@localhost:1521:xe</property>
            <property name="hibernate.connection.username">username</property>
            <property name="hibernate.connection.password">password</property>
            <property name="hibernate.dialect">org.hibernate.dialect.OracleDialect</property>
            <property name="hibernate.show_sql">true</property>
            <mapping resource="Employee.hbm.xml"/>
            
        
        </session-factory>
    
    </hibernate-configuration>

Hibernate Mapping file Employee.hbm.xml

<?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">
    
    <hibernate-mapping>
    <class name="com.durgasoft.pojo.Employee" table="ëmp1">
    <id name="eno"/>
    <property name="ename"/>
    <property name="esal"/>
    <property name="eaddr"/>
    
    </class>
    
    </hibernate-mapping>

Answer 1

Not sure if you have created your table in your DB. Try these two options:

1. Add table emp1 in DB and re run your application.
2. Add below configuration in your hibernate config file.

<property name="hbm2ddl.auto">update</property>

You can refer this link for various values you can use.

https://stackoverflow.com/a/23678638/8148637

Edit:

You are using session.update(emp) to update a table that is empty.Instead, Use:

session.saveOrUpdate(emp)