Constructor works in one place but not another

Question

This is a program related to the game medal of honor. The constructor:
Rcon status = new Rcon("say test", "superman3","213.221.175.132", "29961");
Works from the main class, but where it's positioned in the class below, it doesn't - I'd love to know why!
import java.util.StringTokenizer;
import java.util.Vector;
import java.util.HashMap;
public class Token     {
     String test;
public Token(String a)     {
          String toke = a;
          String s3 = "";
          HashMap hash = new HashMap();
          StringTokenizer tokenizer = new StringTokenizer(toke, "\n");
          while(tokenizer.hasMoreTokens())     {
                         String newString = tokenizer.nextToken();
                         if(newString.startsWith("map:") || newString.startsWith("num") || newString.startsWith("---") || newString.startsWith("print", 5)) {
                              } else     {                         
                         String s1 = newString;
          String num = s1.substring(0,4).trim();
          String score = s1.substring(4,9).trim();
          String ping = s1.substring(9,15).trim();
          String name = s1.substring(15,31).trim();
          String lastmsg = s1.substring(31,39).trim();
          String address = s1.substring(39,61).trim();
          String portno = "";
          String qport = s1.substring(61,67).trim();
          String rate = s1.substring(67,72).trim();
          try     {
          test = s1.substring(72,73).trim();
                    if(test != null)     {
               System.out.println(name + " your name is too long.\nPlease abbreviate it to less than 15 characters.");
               Rcon status = new Rcon("say test", "superman3","213.221.175.132", "29961");
               status.start();
     }     catch (StringIndexOutOfBoundsException e)     {
          if(test == null)     {
          Vector vector = new Vector();
          StringTokenizer tokens = new StringTokenizer(address,":");
          if(tokens.hasMoreTokens())     {
          address = tokens.nextToken();
          if(tokens.hasMoreTokens())     {
               portno = tokens.nextToken();
          vector.add(num);
          vector.add(score);
          vector.add(ping);
          vector.add(name);
          vector.add(lastmsg);
          vector.add(address);
          vector.add(portno);
          vector.add(qport);
          vector.add(rate);
          hash.put(address,vector);
          System.out.println(hash);

Answer 1

Thanks for the reply.
It doesn't produce an error (probably due to my poor coding!) It's part of one thread and the other one works fine, so the program doesn't exit or anything. There's no GUI at present, it just lets the other thread carry on and this one just stops when it gets to the constructor.
Here's the class if it helps:
import java.io.InputStream;
import java.io.IOException;
import java.net.DatagramPacket;
import java.net.DatagramSocket;
import java.net.InetAddress;
class Rcon {
public int q3que (String msg,byte [] data,String server,Integer port) {
     DatagramSocket ds;
     DatagramPacket dp;
     InetAddress ia;
try {
     ds = new DatagramSocket();
} catch ( java.net.SocketException e) {
System.out.print ("OK, we caught a java.net.SocketException. :'p\n");
     return -1;
try {
     ia = InetAddress.getByName(server);
} catch ( java.net.UnknownHostException e) {
System.out.print ("OK, we caught a java.net.UnknownHostException. :'p\n");
     return -1;
String out = "xxxxx" + msg;
byte [] buff = out.getBytes();
buff[0] = (byte)0xff;
buff[1] = (byte)0xff;
buff[2] = (byte)0xff;
buff[3] = (byte)0xff;
buff[4] = (byte)0x02;
dp = new DatagramPacket(buff, buff.length, ia, port.intValue());
try {
     ds.send(dp);
} catch ( java.io.IOException e) {
System.out.print ("OK, we caught a java.net.java.io.IOException. :'p\n");
     return -1;
return dp.getLength();
public Rcon(String a, String b, String c, String d)     {
     int length;
byte [] buff = new byte[65507];
     String rcon = a;
     String passwd = b;
     String host = c;
     Integer port = new Integer(d);
     length=q3que ("rcon\r" + passwd + "\r" + rcon +"\0",buff,host,port);
     if (length < 0) return;
return;