import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.ResultSet;
import java.sql.Statement;
import java.sql.SQLException;

// User: USER
// Datetime: Thu Oct 20 15:19:38 IST 2011
// File name: Document [1].java
/**
 * This class is generated from template.
 * To change the template go to Window -> Preferences -> Document Template.
 * @author Apex Text
 */
public class A{
private A(){

    }

public static void main(String args[]) throws Exception{
    Connection connection=getConnection();
    Statement st=null;
    ResultSet rs=null;
    try {
        st=connection.createStatement();
        rs=st.executeQuery("select count(*) from employee");
        rs.next();
        int employeeCount=rs.getInt(1);
        System.out.println("Employee count: "+employeeCount);
    }finally{
        if(st!=null){
            st.close();
        }
        if(rs!=null){
            rs.close();
        }   
        if(connection!=null){           
        }
    }
}       
public static Connection getConnection() {
    Connection con = null;
    try {
        Class.forName("com.mysql.jdbc.Driver");
        con = DriverManager.getConnection("jdbc:mysql://localhost:3306/abhi","psuggest",""); 
} catch (SQLException ex){
    ex.printStackTrace();
} catch (ClassNotFoundException ex) {
    ex.printStackTrace();
    }
    return con;
}
}

"is the program with database created and compilation is sucessful
but when we run application i have an error message like this..."

(""""""Java Tools >> Run Application' tool executing...

java.lang.NoClassDefFoundError: A

Caused by: java.lang.ClassNotFoundException: A

    at java.net.URLClassLoader$1.run(Unknown Source)

    at java.security.AccessController.doPrivileged(Native Method)

    at java.net.URLClassLoader.findClass(Unknown Source)

    at java.lang.ClassLoader.loadClass(Unknown Source)

    at sun.misc.Launcher$AppClassLoader.loadClass(Unknown Source)

    at java.lang.ClassLoader.loadClass(Unknown Source)

Could not find the main class: A.  Program will exit.

Exception in thread "main" 

'Java Tools >> Run Application' tool execution finished."""""")

what may the problem?