Apache Mina Exception

Question

i have followed this link for my example program using apache mina.

these are the lib files which i used with the code.

1. mina-core-2.0.7.jar
2. slf4j-api-1.7.5.jar
3. slf4j-jdk14-1.7.5.jar

i am getting the following error:

Exception in thread "main" java.lang.ClassCastException: org.slf4j.impl.JDK14LoggerAdapter cannot be cast to java.util.logging.Logger
    at minafiletrans.MinaServerHandler.<init>(MinaServerHandler.java:12)
    at minafiletrans.Minafiletrans.main(Minafiletrans.java:23)
Java Result: 1

here is my code:

    package minafiletrans;

import java.util.logging.Logger;
import org.apache.mina.core.service.IoHandlerAdapter;
import org.apache.mina.core.session.IdleStatus;
import org.apache.mina.core.session.IoSession;
import org.slf4j.LoggerFactory;

public class MinaServerHandler extends IoHandlerAdapter

{
    @SuppressWarnings("NonConstantLogger")
    private final Logger logger = (Logger) LoggerFactory.getLogger(getClass());
@Override
public void sessionOpened(IoSession session)
{
// set idle time to 10 seconds
session.getConfig().setIdleTime(IdleStatus.BOTH_IDLE, 10);
session.setAttribute("Values: ");
}
@Override
    @SuppressWarnings("LoggerStringConcat")
public void messageReceived(IoSession session, Object message)
{
logger.info("Message received in the server..");
logger.info("Message is: " + message.toString());
}
@Override
public void sessionIdle(IoSession session, IdleStatus status)
{
logger.info("Disconnecting the idle.");
// disconnect an idle client
session.close(true);
}
@Override
public void exceptionCaught(IoSession session, Throwable cause)
{
// close the connection on exceptional situation
session.close(true);
}

}

i have added all the required lib files. then why this error occurs for me. any suggestions to solve this error.

Answer 1

you should not : import java.util.logging.Logger; but import org.slf4j.Logger;