Oracle JDBC initialization failed

General
1

error: Specified JDBC Driver: oracle.jdbc.driver.OracleDriver - initialization failed.

i am using Oracle 11g express,
downloaded ojdbc6.jar.
added the ojdbc6.jar in eclipse: Project → Properties → Libriares → Add external jars

code:
JDBCConnectionPool pool;
SQLContainer container = null;
try {
pool = new SimpleJDBCConnectionPool(
“oracle.jdbc.driver.OracleDriver”,
“jdbc:oracle:thin:@127.0.0.1:1521:XE”, “hr”, “abcd”
);

                TableQuery tq=new TableQuery("JOBS",pool);
                container=new SQLContainer(tq);
    } catch (SQLException e) {
        // TODO Auto-generated catch block
        e.printStackTrace();
    }
2

thinks for the forum, figured out from another post.

import the jodbc6.jar to WEB-INF/lib. it worked.

3

didn’t resolve. removed try-catch and let error displayed.

HTTP Status 500 - com.vaadin.server.ServiceException: java.lang.Error: Unresolved compilation problems:

type Exception report

message com.vaadin.server.ServiceException: java.lang.Error: Unresolved compilation problems:

description The server encountered an internal error that prevented it from fulfilling this request.

exceptionjavax.servlet.ServletException: com.vaadin.server.ServiceException: java.lang.Error: Unresolved compilation problems: Unhandled exception type SQLException Unhandled exception type SQLException com.vaadin.server.VaadinServlet.service(VaadinServlet.java:239) javax.servlet.http.HttpServlet.service(HttpServlet.java:728)root causecom.vaadin.server.ServiceException: java.lang.Error: Unresolved compilation problems: Unhandled exception type SQLException Unhandled exception type SQLException com.vaadin.server.VaadinService.handleExceptionDuringRequest(VaadinService.java:1463) com.vaadin.server.VaadinService.handleRequest(VaadinService.java:1417) com.vaadin.server.VaadinServlet.service(VaadinServlet.java:237) javax.servlet.http.HttpServlet.service(HttpServlet.java:728)root causejava.lang.Error: Unresolved compilation problems: Unhandled exception type SQLException Unhandled exception type SQLException com.example.zs.ZsUI.init(ZsUI.java:55) com.vaadin.ui.UI.doInit(UI.java:641) com.vaadin.server.communication.UIInitHandler.getBrowserDetailsUI(UIInitHandler.java:222) com.vaadin.server.communication.UIInitHandler.synchronizedHandleRequest(UIInitHandler.java:74) com.vaadin.server.SynchronizedRequestHandler.handleRequest(SynchronizedRequestHandler.java:41) com.vaadin.server.VaadinService.handleRequest(VaadinService.java:1405) com.vaadin.server.VaadinServlet.service(VaadinServlet.java:237) javax.servlet.http.HttpServlet.service(HttpServlet.java:728)note The full stack trace of the root cause is available in the Apache Tomcat/7.0.50 logs.

Any suggestion?