JDBC Error - Unknown Source

Question

guys,
plz.........can anyone tell me what this crazy unknown source error is.....
came in try block 1
sql error occured
java.sql.SQLException: Failed to start database 'c:/Java DB/javadb/demo/databases/slicr', see the next exception for details.
     at org.apache.derby.impl.jdbc.SQLExceptionFactory.getSQLException(Unknown Source)
     at org.apache.derby.impl.jdbc.Util.newEmbedSQLException(Unknown Source)
     at org.apache.derby.impl.jdbc.Util.newEmbedSQLException(Unknown Source)
     at org.apache.derby.impl.jdbc.Util.generateCsSQLException(Unknown Source)
     at org.apache.derby.impl.jdbc.EmbedConnection.newSQLException(Unknown Source)
     at org.apache.derby.impl.jdbc.EmbedConnection.bootDatabase(Unknown Source)
     at org.apache.derby.impl.jdbc.EmbedConnection.<init>(Unknown Source)
     at org.apache.derby.impl.jdbc.EmbedConnection30.<init>(Unknown Source)
     at org.apache.derby.jdbc.Driver30.getNewEmbedConnection(Unknown Source)
     at org.apache.derby.jdbc.InternalDriver.connect(Unknown Source)
     at org.apache.derby.jdbc.AutoloadedDriver.connect(Unknown Source)
     at java.sql.DriverManager.getConnection(Unknown Source)
     at java.sql.DriverManager.getConnection(Unknown Source)
     at com.ibm.examples.server.ToppingServiceImpl.getAllToppings(ToppingServiceImpl.java:30)
     at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
     at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
     at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
     at java.lang.reflect.Method.invoke(Unknown Source)
     at com.google.gwt.user.server.rpc.RemoteServiceServlet.processCall(RemoteServiceServlet.java:281)
     at com.google.gwt.user.server.rpc.RemoteServiceServlet.doPost(RemoteServiceServlet.java:167)
     at javax.servlet.http.HttpServlet.service(HttpServlet.java:709)
     at javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
     at com.google.gwt.dev.shell.GWTShellServlet.service(GWTShellServlet.java:248)
     at javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
     at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:237)
     at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:157)
     at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:214)
     at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:104)
     at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:520)
     at org.apache.catalina.core.StandardContextValve.invokeInternal(StandardContextValve.java:198)
     at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:152)
     at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:104)
     at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:520)
     at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:137)
     at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:104)
     at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:118)
     at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:102)
     at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:520)
     at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
     at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:104)
     at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:520)
     at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:929)
     at org.apache.coyote.tomcat5.CoyoteAdapter.service(CoyoteAdapter.java:160)
     at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:799)
     at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.processConnection(Http11Protocol.java:705)
     at org.apache.tomcat.util.net.TcpWorkerThread.runIt(PoolTcpEndpoint.java:577)
     at org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:683)
     at java.lang.Thread.run(Unknown Source)
thankyou in advance

Answer 1

this is the only exception it keeps throwing......below is my code for connecting to Derby DB
package com.ibm.examples.server;
import java.sql.*;
import java.util.ArrayList;
import java.util.List;
import com.google.gwt.user.server.rpc.RemoteServiceServlet;
import com.ibm.examples.client.Topping;
import com.ibm.examples.client.ToppingService;
public class ToppingServiceImpl extends RemoteServiceServlet
implements ToppingService {
     public static final String DRIVER ="org.apache.derby.jdbc.EmbeddedDriver";
     public static final String PROTOCOL = "jdbc:derby:c:/Java DB/javadb/demo/databases/slicr";
     public List getAllToppings() {
          try {
               System.out.println("came in try block 1");
               Class.forName(DRIVER).newInstance();
               Connection con = DriverManager.getConnection(PROTOCOL);
               System.out.println("came in try block 2");
               Statement s = con.createStatement();
               ResultSet rs = s.executeQuery("SELECT * FROM app.toppings ORDER BY name");
               System.out.println(rs);
               return ObjectFactory.convertToObjects(rs, Topping.class);
          } catch (Exception e) {
               e.printStackTrace();
               return new ArrayList();
          } finally {
     try {
     DriverManager.getConnection("jdbc:derby:;shutdown=true");
     } catch (SQLException ignore) {}
}