Cara mengecek koneksi ODBC/JDBC

Sebelum melakukan insert update delete pada program buatan alangkah baiknya kita melakukan tes koneksi,supaya kita tahu apakah Driver ODBC-JDBC kita terkoneksi,ni source code nya :

/*
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 */
import java.sql.*;
import javax.swing.*;
/**
 *
 * @author matt
 */
public class teskoneksi
{
void conn()
    {
    try
    {
       String dbname="jdbc:odbc:database2";
       Class.forName("sun.jdbc.odbc.JdbcOdbcDriver");
        Connection con=DriverManager.getConnection(dbname,"matt","matt");//user & pasword
        JOptionPane.showMessageDialog(null,"connection succes","Insert data",JOptionPane.INFORMATION_MESSAGE);
        con.close();
}
    catch (Exception e)
    {
JOptionPane.showMessageDialog(null,"error:"+e,"gagal",JOptionPane.WARNING_MESSAGE);

    }
}
public static void main (String[]args)
    {
teskoneksi test = new teskoneksi();
test.conn();
System.exit(0);
}
}