Q.server get terminated after sleep time completion so further process stop. provide solution or any alternative of thread for following problem.

//Item_Server.java

import java.sql.*;
import java.util.*;
import java.util.*;
import java.net.*;
import java.io.*;
import java.lang.*;

public class Item_Server
{

public static void main(String[] args)
    {

    ServerSocket s1;
    try
            {
            s1=new ServerSocket(8189);
            Socket mys=s1.accept();
            System.out.println("Server Started");
            OutputStream out=mys.getOutputStream();
                try
                    {
                    PrintWriter pw=new PrintWriter(out,true);


                    //int choice;
        //Load driver
                    Class.forName("sun.jdbc.odbc.JdbcOdbcDriver");
        //Defining connection URL
                    String conurl="jdbc:odbc:ItemDsn";
        //Establishing connection
                    Connection conn=DriverManager.getConnection(conurl);
        //Creating statement
        //Statement st=conn.createStatement();
                    Statement st=conn.createStatement();
                    String selectstr="select * from Items";
                    ResultSet rs;
                    rs=st.executeQuery(selectstr);

                    while(rs.next())
                    {
                        //System.out.println(rs.getString(2)+"\t"+rs.getInt(3)+"\t"+rs.getInt(4));
                        pw.println(rs.getInt(1)+"."+rs.getString(2)+"\t"+rs.getDouble(3));
                    }
                    out.close();
                    System.out.println("before sleep");
                    Thread.sleep(15000);
                    System.out.println("awake");
                    Scanner sc=new Scanner(mys.getInputStream());
                    while(sc.hasNext())
                    {
                        System.out.println(sc.nextLine());
                    }
                    }
                    catch(Exception ex)
                    {
                    System.out.println(ex);
                    }
                finally
                {
                System.out.println("Server shut down");
                s1.close();
                //out.close();
                }
            }
    catch(Exception ex)
            {
            System.out.println(ex);
            }
    }

}

//Item_Client.java

import java.util.*;
import java.net.*;
import java.io.*;

public class Item_Client
{
    public static void main(String[] args)
    {

InputStream in;
    OutputStream out;

    Socket mys;
    int itemno,qty;
    Scanner sc,sc1;
    PrintWriter pw;
    int choice,i=100;
    try
    {
        mys=new Socket("localhost",8189);
        in=mys.getInputStream();
        out=mys.getOutputStream();
        sc=new Scanner(in);
        sc1=new Scanner(System.in);

        System.out.println("\nItem Catalog\n---------------\n");
        System.out.println("-------------------------\n\tItemName\tPrice\n-------------------------\n");
        while(sc.hasNext())
        {
            i++;
            System.out.println(sc.nextLine());
        }
        i++;
        System.out.println(i+".End shopping");
        in.close();
        System.out.println("\nEnter Item No and Quantity to your shopping cart\n");
        System.out.println("(Enter Item no  to quit)");
        pw=new PrintWriter(out,true);
        do
        {
        System.out.print("Enter ITEM NO:");
        itemno=Integer.parseInt(sc1.nextLine());
        pw.println(itemno);
            if(itemno!=108)
            {
            System.out.print("Enter QTY:");
            qty=Integer.parseInt(sc1.nextLine());
            pw.println(qty);
            }
        }while(itemno!=i);
    }
    catch(Exception ex)
    {
    System.out.println(ex);
    }
    }
}