Probleminha de Java - alguém?

Arquivo ChatClient.java:

import java.net.*;
.
.
.
try
{
MySocket sConnection = new MySocket("7.0.8.75", 5432, "Felipe");
.
.
.

Arquivo MySocket.java:

import java.net.*;
public class MySocket extends Socket
{
private String userName;

public MySocket(InetAddress address, int port, String userName) throws Exception
{
super(address, port);
this.userName = userName;
}

public String getUserName()
{
return (this.userName);
}
}


e não consigo resolver o maldito erro a seguir:


ChatClient.java:74: cannot find symbol
symbol : constructor MySocket(java.lang.String,int,java.lang.String)
location: class MySocket
sConnection = new MySocket("7.0.8.75", 5432, "Felipe");
^
1 error


Alguém?