Multiple markers at this line - Syntax error on token ")", ; expected - void is an invalid type for the variable main - Syntax error on token "(", ; expected

package imooc;

import javax.ejb.Stateless;

/**

 * Session Bean implementation class IMOOC

 */

@Stateless

public class IMOOC implements IMOOCLocal {

/**

     * Default constructor. 

     */

    public IMOOC(){ 

    public static void main(String[] args)

    {

    String hoyyb="慕课网";

    System.out.println(hoyyb);

    }

    }

}