Exception while running the insert service to add country

//Databse.java for database connection with the mysql
public class Database {


	public Connection Get_Connection() throws Exception
	{
	try
	{
	String connectionURL = "jdbc:mysql://localhost:3306/atm";
	Connection connection = null;
	Class.forName("com.mysql.jdbc.Driver").newInstance();
	connection = DriverManager.getConnection(connectionURL, "root", "admin");
	return connection;
	}
	catch (SQLException e)
	{
	throw e;
	}
	catch (Exception e)
	{
	throw e;
	}
	}


}
/***************************************************************************************************/


//AlertDao.java to insert data into the country table having country_id and country_name as 2 fields

public class AlertDao {
public static boolean setCountry(Connection connection, String countryName) {

		PreparedStatement ps;
		boolean insertStatus = false;

		try {
			ps = connection.prepareStatement("SELECT COUNTRY_ID FROM COUNTRY WHERE COUNTRY_NAME = ?");
			ps.setString(1, countryName);
			ResultSet rs = ps.executeQuery();
			if (!rs.next()) {
				rs.close();
				ps.close();
				ps = connection.prepareStatement("INSERT INTO COUNTRY (COUNTRY_NAME) VALUES (?) ");
				ps.setString(1, countryName);
				int records = ps.executeUpdate();
				if (records > 0) {
	                insertStatus = true;
	            }

			}

			ps.close();
			connection.commit();
			connection.close();

		} catch (Exception e) {
			System.out.println(e);
		}

		return insertStatus;

	}

}

/***************************************************************************************************/

// AlertManager.java for caaling the method of AlertDao.java

public class AlertManager {
public static boolean setCountry(String countryName){

		boolean countryInsertStatus = false;

		try {
			Database database = new Database();
			Connection connection = database.Get_Connection();
			AlertDao project = new AlertDao();
			countryInsertStatus = project.setCountry(connection, countryName);
			} catch (Exception e) {
			System.out.println(e);
		}
		return countryInsertStatus;

	}

}

/**************************************************************************************************/

//AtmService.java for calling the service through URL

@Path("/WebService")
public class AtmService {
@GET
	@Path("/setCountry")
	@Produces("application/json")
	public String country(String countryName) {
		boolean countryInsert = false;
		String feeds = null;

		try {
			AlertManager alertManager = new AlertManager();
			countryInsert = alertManager.setCountry(countryName);
			Gson gson = new Gson();
			System.out.println(gson.toJson(countryInsert));
			feeds = gson.toJson(countryInsert);
		}

		catch (Exception e) {
			System.out.println("Exception Error"); // Console
		}
		return feeds;
	}

}


/***********************************************************************************************/

// url which I am running to run this service is
http://localhost:8080/DemoJavaAngular/REST/WebService/setCountry?countryName=nupur


but I am getting exception as

type Exception report

message Servlet.init() for servlet ServletAdaptor threw exception

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

exception

javax.servlet.ServletException: Servlet.init() for servlet ServletAdaptor threw exception
	org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:502)
	org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:79)
	org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:616)
	org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:518)
	org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1091)
	org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:673)
	org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1500)
	org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.run(NioEndpoint.java:1456)
	java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
	java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
	org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
	java.lang.Thread.run(Unknown Source)
root cause

com.sun.jersey.api.container.ContainerException: Fatal issues found at class webService.AtmService. See logs for more details.
	com.sun.jersey.server.impl.application.WebApplicationImpl.newResourceClass(WebApplicationImpl.java:346)
	com.sun.jersey.server.impl.application.WebApplicationImpl.getResourceClass(WebApplicationImpl.java:321)
	com.sun.jersey.server.impl.application.WebApplicationImpl.processRootResources(WebApplicationImpl.java:807)
	com.sun.jersey.server.impl.application.WebApplicationImpl.initiate(WebApplicationImpl.java:590)
	com.sun.jersey.server.impl.application.WebApplicationImpl.initiate(WebApplicationImpl.java:383)
	com.sun.jersey.spi.container.servlet.ServletContainer.initiate(ServletContainer.java:377)
	com.sun.jersey.spi.container.servlet.ServletContainer$InternalWebComponent.initiate(ServletContainer.java:242)
	com.sun.jersey.spi.container.servlet.WebComponent.load(WebComponent.java:449)
	com.sun.jersey.spi.container.servlet.WebComponent.init(WebComponent.java:169)
	com.sun.jersey.spi.container.servlet.ServletContainer.init(ServletContainer.java:281)
	com.sun.jersey.spi.container.servlet.ServletContainer.init(ServletContainer.java:442)
	javax.servlet.GenericServlet.init(GenericServlet.java:158)
	org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:502)
	org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:79)
	org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:616)
	org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:518)
	org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1091)
	org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:673)
	org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1500)
	org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.run(NioEndpoint.java:1456)
	java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
	java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
	org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
	java.lang.Thread.run(Unknown Source)
note The full stack trace of the root cause is available in the Apache Tomcat/8.0.27 logs.