SHMIL

package factory;//Main.java//=========public class Main{    public static void main(String[] args)     {        Select factory = new Select();        Writer w = factory.getWriter();        w.write("hello","guy");    }}// Select.java// ===========public class Select {    public Writer getWriter()    {        Math math = new Math();        if(math.write(math._msg1,math._msg2) == true)        {            return new Math();        }                else         {            return new Text();        }    }}// Writer <Interface>// ==================package factory;public interface Writer {    public boolean write(String msg1, String msg2);}// Math.java// =========package factory;public class Math implements Writer{     protected String _msg1;     protected String _msg2;          public boolean write(String msg1, String msg2)    {        _msg1 = msg1;        _msg2 = msg2;                 try          {              Integer.parseInt(_msg1);            Integer.parseInt(_msg2);            return true;        }                 catch (NumberFormatException ex)        {            return false;        }    }}    // Text.java// =========package factory;public class Text implements Writer{    public boolean write(String msg1, String msg2)    {        return false;    }}