Exception in thread "AWT-EventQueue-0" java.lang.ClassCastException - java

I'm trying to connect my java application with sql server 2012, but is giving me this error:
Exception in thread "AWT-EventQueue-0" java.lang.ClassCastException: com.microsoft.sqlserver.jdbc.SQLServerConnection cannot be cast to com.mysql.jdbc.Connection
Can anyone can help me please?
Thank you very much.
Code of connection:
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.SQLException;
public class CriaConexao {
public static Connection getConexao()throws SQLException{
try{
Class.forName("com.microsoft.sqlserver.jdbc.SQLServerDriver");
String dbURL = "jdbc:sqlserver://BRGDB:1433;database=DB_SQL;IntegratedSecurity=true";
Connection conexao = DriverManager.getConnection(dbURL);
return conexao;
}catch(Exception e) {
e.printStackTrace();
return null;
}
}
}
Error:
Exception in thread "AWT-EventQueue-0" java.lang.ClassCastException: com.microsoft.sqlserver.jdbc.SQLServerConnection cannot be cast to com.mysql.jdbc.Connection
at sensores.forms.jTLoginConsulta.<init>(jTLoginConsulta.java:71)
at sensores.forms.jTLoginConsulta$4.run(jTLoginConsulta.java:448)
at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:311)
at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:744)
at java.awt.EventQueue.access$400(EventQueue.java:97)
at java.awt.EventQueue$3.run(EventQueue.java:697)
at java.awt.EventQueue$3.run(EventQueue.java:691)
at java.security.AccessController.doPrivileged(Native Method)
at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:75)
at java.awt.EventQueue.dispatchEvent(EventQueue.java:714)
at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:201)
at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:116)
at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:105)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:101)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:93)
at java.awt.EventDispatchThread.run(EventDispatchThread.java:82)
jTLoginConsulta imports:
import com.mysql.jdbc.Connection;
import com.mysql.jdbc.PreparedStatement;
import java.awt.*;
import java.sql.ResultSet;
import java.sql.SQLException;
import javax.swing.*;
import org.openide.util.Exceptions;
import sensores.basedados.CriaConexao;
import sensores.forms.jTMainMenu;
import com.mysql.jdbc.PreparedStatement;
import java.awt.Color;
import java.awt.Toolkit;
import java.sql.DriverManager;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.Statement;
import javax.swing.JOptionPane;
import java.awt.*;
import java.sql.*;
import java.awt.event.WindowEvent;
import java.io.BufferedReader;
import java.io.File;
import java.io.FileReader;
import java.io.IOException;
import java.io.PrintWriter;
import java.text.DateFormat;
import java.text.SimpleDateFormat;
import java.util.StringTokenizer;
import java.util.TimerTask;
import javax.swing.*;
import sensores.basedados.CriaConexao;
import sensores.logica.Logins;
import java.util.Timer;
import java.util.TimerTask;
import java.util.*;
import java.util.List;
import sensores.logica.Alarmes;
import javax.mail.*;
import javax.mail.internet.*;
import javax.activation.*;
import javax.mail.Address;
import javax.mail.Message.RecipientType;
Line 71 where the error occurs:
68 public jTLoginConsulta() throws SQLException {
69 initComponents();
70 setIcon();
71 conexao=(Connection) CriaConexao.getConexao();
72
73 }


Check the import for this Connection object
Connection conexao = DriverManager.getConnection(dbURL);
it should be java.sql.Connection. It seems you have imported it wrongly com.mysql.jdbc.Connection
EDIT
as per edited question:
conexao=(Connection) CriaConexao.getConexao();
CriaConexo is returning the com.microsoft.sqlserver.jdbc.SQLServerConnection and you are casting it wrongly to com.mysql.jdbc.Connection. Just correct the import to java.sql.Connection and remove the cast as well.
Hope it helps.

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import java.io.IOException;
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import java.io.DataOutput;
import java.io.EOFException;
import java.io.IOException;
import java.net.Socket;
import java.util.HashMap;
import java.util.HashSet;
import java.util.Map;
import java.util.Set;
import org.apache.hadoop.conf.Configured;
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import java.io.BufferedReader;
import java.util.*;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.FileReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.ObjectInputStream;
import java.io.ObjectOutputStream;
import java.io.OutputStream;
import java.util.Iterator;
import hadoop.DENCLUE;
//import javafx.scene.text.Text;
import sun.security.krb5.Config;
import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.fs.FileSystem;
import org.apache.hadoop.fs.Path;
import org.apache.hadoop.fs.viewfs.Constants;
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import org.apache.hadoop.mapred.FileOutputFormat;
import org.apache.hadoop.mapred.JobClient;
import org.apache.hadoop.mapred.JobConf;
import org.apache.hadoop.mapred.MapReduceBase;
import org.apache.hadoop.mapred.Mapper;
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import org.apache.hadoop.mapred.Reducer;
import org.apache.hadoop.mapred.Reporter;
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import org.apache.hadoop.mapred.TextOutputFormat;
//import org.apache.hadoop.mapred.jobcontrol.Job;
import org.apache.hadoop.util.Tool;
import org.apache.hadoop.util.ToolRunner;
import org.omg.CORBA.PUBLIC_MEMBER;
import com.sun.org.apache.bcel.internal.generic.NEW;
import org.apache.hadoop.conf.*;
import org.apache.hadoop.fs.*;
import org.apache.hadoop.io.*;
import org.apache.hadoop.mapreduce.Job;
import org.apache.hadoop.mapreduce.lib.input.*;
import org.apache.hadoop.mapreduce.lib.output.*;
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import org.apache.hadoop.mapreduce.task.JobContextImpl;
import org.apache.hadoop.mapreduce.lib.input.*;
import org.apache.hadoop.mapreduce.lib.output.*;
import org.apache.hadoop.util.*;
import java.io.DataOutput;
import java.io.DataInput;
import java.io.IOException;
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#SuppressWarnings("rawtypes")
Context con ;
#SuppressWarnings("unchecked")
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output, Reporter reporter) throws IOException {
String line = value.toString();
String[] words=line.split(",");
for(String word: words )
{
Text outputKey = new Text(word.toUpperCase().trim());
try {
con.write(outputKey, words);
} catch (InterruptedException e) {
e.printStackTrace();
}
}
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Configuration c=new Configuration();
String[] files=new GenericOptionsParser(c,args).getRemainingArgs();
Path input=new Path(files[0]);
Path output=new Path(files[1]);
Job j=new Job(c,"wnt");
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j.setMapperClass(Mapn.class);
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j.setOutputValueClass(Text.class);
FileInputFormat.addInputPaths(j, input);
FileOutputFormat.setOutputPath(j, output);
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Exception in thread "main" java.lang.RuntimeException: class hadoop.projectmr$Mapn not org.apache.hadoop.mapreduce.Mapper
at org.apache.hadoop.conf.Configuration.setClass(Configuration.java:1969)
at org.apache.hadoop.mapreduce.Job.setMapperClass(Job.java:891)
at hadoop.projectmr.main(projectmr.java:191)

This is the old, Hadoop 1 API
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You should be importing from classes within
org.apache.hadoop.mapreduce.*;
As the error says
not org.apache.hadoop.mapreduce.Mapper
So, basically, you don't need MapReduceBase, and Mapper is a class now, not an interface
So, you now would have
public static class MyMapper extends Mapper<Kin, Vin, Kout, Vout>
Look at the WordCount code

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at xxxx.yyyyyy.sftpFileTransfer.main(sftpFileTransfer.java:17)
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at java.net.URLClassLoader$1.run(URLClassLoader.java:355)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:354)
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at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:308)
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... 1 more
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import java.io.IOException;
import java.io.BufferedInputStream;
import java.io.IOException;
import org.apache.hadoop.conf.Configuration;
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import org.apache.hadoop.fs.FileSystem;
import org.apache.hadoop.fs.Path;
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import com.jcraft.jsch.ChannelSftp;
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import com.jcraft.jsch.JSch;
import com.jcraft.jsch.JSchException;
import com.jcraft.jsch.Session;
import com.jcraft.jsch.SftpATTRS;
import com.jcraft.jsch.SftpException;
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import java.util.List;
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import org.apache.hadoop.fs.FileSystem;
import org.apache.hadoop.fs.Path;
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<artifactId>mule-core</artifactId>
<version>3.4.0</version>
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<groupId>org.mule.transports</groupId>
<artifactId>mule-transport-sftp</artifactId>
<version>3.4.0</version>
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</dependencies>
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