Tomcat error 500 on page load - servlets

Question

I am getting the following error on Tomcat.
The code is given below
message Servlet execution threw an exception
description The server encountered an internal error that prevented it from fulfilling this request.
exception
javax.servlet.ServletException: Servlet execution threw an exception
org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
root cause
java.lang.NoClassDefFoundError: net/sf/ezmorph/Morpher
DBChart.doGet(DBChart.java:68)
javax.servlet.http.HttpServlet.service(HttpServlet.java:621)
javax.servlet.http.HttpServlet.service(HttpServlet.java:728)
org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
root cause
java.lang.ClassNotFoundException: net.sf.ezmorph.Morpher
org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1702)
org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1547)
DBChart.doGet(DBChart.java:68)
javax.servlet.http.HttpServlet.service(HttpServlet.java:621)
javax.servlet.http.HttpServlet.service(HttpServlet.java:728)
org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
Below is my Java file
//imported all the required packages here
class DBChart extends HttpServlet
{
Connection c = null;
Statement st = null;
ResultSet rs = null;
String query = null;
JSONObject obj = null;
JSONObject resobj = null;
PreparedStatement pst = null;
DatabaseMetaData dbmd = null;
String dbURL = "jdbc:sqlserver://localhost:1433; databaseName = EMPLOYEE";
String user = "username";
String password = "mypassword";
public void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException
{
try
{
List<JSONObject> Details = new LinkedList<JSONObject>();
PrintWriter out = response.getWriter();
Class.forName("com.microsoft.sqlserver.jdbc.SQLServerDriver");
c = DriverManager.getConnection(dbURL, user, password);
query = " select DeptName, NumberOfEmployess from Departments";
pst = c.prepareStatement(query);
rs = pst.executeQuery();
while (rs.next())
{
String dept = rs.getString(1);
int empnumber = rs.getInt(2);
obj = new JSONObject();
obj.put("DepartmentName", dept);
obj.put("EmployeesinNumbers", empnumber);
Details.add(obj);
}
resobj.put("RelativeDetails", Details);
out.write(resobj.toString());
}
catch (Exception e)
{
System.out.println("Exception " + e);
}
}
public void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException
{
doGet(request, response);
}
}
I made sure that I have mentioned the correct name in XMl file and using the url as follows:
http://localhost:8080/DBCHART/db

Answer 1

Your class needs to be public:
public class DBChart extends HttpServlet