Sql server 2005 connection

i tried make jdbc connection like followig & import jtds driver also.

import java.sql.*;

public class testConnection
{




public static Connection getConn(){
try{
Connection con=null;
Class.forName("net.sourceforge.jtds.jdbc.Driver").newInstance();
con=DriverManager.getConnection("jdbc:jtds:sqlserver://localhost:1433/master", "test", "123");
System.out.println("connected");
return con;
}
catch (Exception e){
System.out.println("DB Connection ERROR");
e.printStackTrace();}
return null;
}
public static void main(String[] args)
{
testConnection.getConn();
}
}


but it getting folowing errors..

run:
DB Connection ERROR
java.sql.SQLException: Network error IOException: Connection refused: connect
at net.sourceforge.jtds.jdbc.ConnectionJDBC2.<init>(ConnectionJDBC2.java:385)
at net.sourceforge.jtds.jdbc.ConnectionJDBC3.<init>(ConnectionJDBC3.java:50)
at net.sourceforge.jtds.jdbc.Driver.connect(Driver.ja va:182)
at java.sql.DriverManager.getConnection(DriverManager .java:582)
at java.sql.DriverManager.getConnection(DriverManager .java:185)
at sample.testConnection.getConn(testConnection.java: 15)
at sample.testConnection.main(testConnection.java:26)
Caused by: java.net.ConnectException: Connection refused: connect
at java.net.PlainSocketImpl.socketConnect(Native Method)
at java.net.PlainSocketImpl.doConnect(PlainSocketImpl .java:333)
at java.net.PlainSocketImpl.connectToAddress(PlainSoc ketImpl.java:195)
at java.net.PlainSocketImpl.connect(PlainSocketImpl.j ava:182)
at java.net.SocksSocketImpl.connect(SocksSocketImpl.j ava:366)
at java.net.Socket.connect(Socket.java:519)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Nativ e Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Native MethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(De legatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at net.sourceforge.jtds.jdbc.SharedSocket.createSocke tForJDBC3(SharedSocket.java:304)
at net.sourceforge.jtds.jdbc.SharedSocket.<init>(SharedSocket.java:255)
at net.sourceforge.jtds.jdbc.ConnectionJDBC2.<init>(ConnectionJDBC2.java:310)
... 6 more
BUILD SUCCESSFUL (total time: 1 second)



please correct for me..
tks