import javax.persistence.Entity;
import javax.persistence.Table;
import javax.persistence.Id;
import javax.persistence.Column;
import javax.persistence.Version;

@Entity
@Table(name = "COURSE", schema ="RUM")



public class Course {


	@Id
	@Column(name="NUMBER")
	protected int number;
	@Column(name="DEPARTMENT")
	protected String dept;
	@Column(name="SESSION")
	protected String session;
	@Column(name="COURSE_YEAR")
	protected int year;
	@Column(name="STATUS")
	protected boolean status = true;
	@Version
	@Column(name="VERSION")
	protected int version;


	public Course(){
		super();
	}
	public Course(String dept_, int number_,String session_,int year_){

		dept = dept_;
		number = number_;
		session = session_;
		year = year_;
	}

	public int getVersion() {
		return version;
	}
	public void setVersion(int version) {
		this.version = version;
	}
	public void setStatus(boolean status_){
		status = status_;
	}
	public int getNumber() {
		return number;
	}

	public String getDept() {
		return dept;
	}

	public String toString(){
		return(this.dept + this.number + " " + this.year + " " + this.session );
	}



}




[EL Info]: 2010-10-23 04:06:54.158--ServerSession(6829563)--EclipseLink, version: Eclipse Persistence Services - 2.1.0.v20100614-r7608
[EL Severe]: 2010-10-23 04:06:54.159--ServerSession(6829563)--java.lang.NullPointerException
	at java.util.ResourceBundle.getBundle(Unknown Source)
	at org.eclipse.persistence.exceptions.i18n.ExceptionMessageGenerator.buildMessage(ExceptionMessageGenerator.java:47)
	at org.eclipse.persistence.exceptions.DatabaseException.unableToAcquireConnectionFromDriverException(DatabaseException.java:376)
	at org.eclipse.persistence.sessions.DefaultConnector.connect(DefaultConnector.java:91)
	at org.eclipse.persistence.sessions.DatasourceLogin.connectToDatasource(DatasourceLogin.java:162)
	at org.eclipse.persistence.internal.sessions.DatabaseSessionImpl.loginAndDetectDatasource(DatabaseSessionImpl.java:579)
	at org.eclipse.persistence.internal.jpa.EntityManagerFactoryProvider.login(EntityManagerFactoryProvider.java:228)
	at org.eclipse.persistence.internal.jpa.EntityManagerSetupImpl.deploy(EntityManagerSetupImpl.java:380)
	at org.eclipse.persistence.internal.jpa.EntityManagerFactoryImpl.getServerSession(EntityManagerFactoryImpl.java:157)
	at org.eclipse.persistence.internal.jpa.EntityManagerFactoryImpl.createEntityManagerImpl(EntityManagerFactoryImpl.java:214)
	at org.eclipse.persistence.internal.jpa.EntityManagerFactoryImpl.createEntityManager(EntityManagerFactoryImpl.java:202)
	at rUM.Driver.loadCourses(Driver.java:171)
	at rUM.AdministratorSession.doGet(AdministratorSession.java:45)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:617)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
	at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233)
	at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191)
	at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127)
	at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
	at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
	at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:298)
	at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:857)
	at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:588)
	at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:489)
	at java.lang.Thread.run(Unknown Source)