Java Server Chat, Help Needed PLEASE!! - NullPointerException

Question

Hi i am having problem with my java chat. when i go to load it i get a NullPointerException i know what code is causeing the problem but im not quite sure what it does can u explain to me please. Ive been looking at this error trying to fix it for a few weeks now and its annoying. Thank you for any help. Here is the code that causes the NullPointerException
     public static final void j()
        try
            String as[] = {
                "ar", "aq", "ao"
            Class class1;
            Object obj = (class1 = Class.forName((new StringBuilder()).append(com/diginet/oldchat/server/g.getPackage().getName()).append(".an").toString())).getMethod(as[0], new Class[0]);
            if(q)
                obj = ((Method) (obj)).invoke(null, new Object[0]);
                Class aclass[];
                (aclass = new Class[1])[0] = java/lang/String;
                Object aobj[];
                (aobj = new Object[1])[0] = obj;
                for(int i1 = 1; i1 < as.length; i1++)
                    Method method;
                    (method = class1.getMethod(as[i1], aclass)).invoke(null, aobj);
                q = false;
            return;
        catch(Exception _ex)
            ChatServer.q_java_util_Vector_static_fld = new Vector();
        ChatServer.q_com_diginet_digichat_common_SerialInfo_static_fld = null;
    }If part of the program uses
com.diginet.oldchat.server.g.j();wich will load the code above it always gives NullPointerException and then wont continue loading what is wrong? Please help me
Oh and by the way this is my first post on this forum and i found it quite easy to use!
Please please please help me thnk youuu

Answer 1

Ok here is what u asked for. Oh and by the way im running this from CMD so wilse the Chat Server is loading i can do the Stack Trace just as its trying to do what it does after saying "Expires On:" (Wich after gives NullPointerException) once the errors come on the screen i cant get a stack trace anymore by useing {CTRL} + Break. but i still hope this can help u :)
*2009-05-07 22:23:30*
Full thread dump Java HotSpot(TM) Client VM (11.3-b02 mixed mode, sharing):
*"Low Memory Detector" daemon prio=6 tid=0x02a7e000 nid=0xbcc runnable [0x0000000*
*0..0x00000000]*
java.lang.Thread.State: RUNNABLE
*"CompilerThread0" daemon prio=10 tid=0x02a7b000 nid=0xd80 waiting on condition [*
*0x00000000..0x02d2f9c0]*
java.lang.Thread.State: RUNNABLE
*"Attach Listener" daemon prio=10 tid=0x02a79800 nid=0x270 runnable [0x00000000..*
*0x00000000]*
java.lang.Thread.State: RUNNABLE
*"Signal Dispatcher" daemon prio=10 tid=0x02a78400 nid=0x224 waiting on condition*
*[0x00000000..0x00000000]*
java.lang.Thread.State: RUNNABLE
*"Finalizer" daemon prio=8 tid=0x02a73400 nid=0xf60 in Object.wait() [0x02c3f000.*
*.0x02c3fa94]*
java.lang.Thread.State: WAITING (on object monitor)
at java.lang.Object.wait(Native Method)
- waiting on <0x22a80288> (a java.lang.ref.ReferenceQueue$Lock)
at java.lang.ref.ReferenceQueue.remove(Unknown Source)
- locked <0x22a80288> (a java.lang.ref.ReferenceQueue$Lock)
at java.lang.ref.ReferenceQueue.remove(Unknown Source)
at java.lang.ref.Finalizer$FinalizerThread.run(Unknown Source)
*"Reference Handler" daemon prio=10 tid=0x02a6ec00 nid=0xe2c in Object.wait() [0x*
*02bef000..0x02befb14]*
java.lang.Thread.State: WAITING (on object monitor)
at java.lang.Object.wait(Native Method)
- waiting on <0x22a80310> (a java.lang.ref.Reference$Lock)
at java.lang.Object.wait(Object.java:485)
at java.lang.ref.Reference$ReferenceHandler.run(Unknown Source)
- locked <0x22a80310> (a java.lang.ref.Reference$Lock)
*"main" prio=6 tid=0x002b6400 nid=0x6b0 runnable [0x0090f000..0x0090fe54]*
java.lang.Thread.State: RUNNABLE
at java.net.Inet4AddressImpl.lookupAllHostAddr(Native Method)
at java.net.InetAddress$1.lookupAllHostAddr(Unknown Source)
at java.net.InetAddress.getAddressFromNameService(Unknown Source)
at java.net.InetAddress.getAllByName0(Unknown Source)
at java.net.InetAddress.getAllByName(Unknown Source)
at java.net.InetAddress.getAllByName(Unknown Source)
at java.net.InetAddress.getByName(Unknown Source)
at java.net.InetSocketAddress.<init>(Unknown Source)
at sun.net.NetworkClient.doConnect(Unknown Source)
at sun.net.www.http.HttpClient.openServer(Unknown Source)
at sun.net.www.http.HttpClient.openServer(Unknown Source)
- locked <0x229fac68> (a sun.net.www.http.HttpClient)
at sun.net.www.http.HttpClient.<init>(Unknown Source)
at sun.net.www.http.HttpClient.New(Unknown Source)
at sun.net.www.http.HttpClient.New(Unknown Source)
at sun.net.www.protocol.http.HttpURLConnection.getNewHttpClient(Unknown
Source)
at sun.net.www.protocol.http.HttpURLConnection.plainConnect(Unknown Sour
ce)
at sun.net.www.protocol.http.HttpURLConnection.connect(Unknown Source)
at sun.net.www.protocol.http.HttpURLConnection.getInputStream(Unknown So
urce)
- locked <0x229f4118> (a sun.net.www.protocol.http.HttpURLConnection)
at java.net.URL.openStream(Unknown Source)
at com.diginet.oldchat.server.an.w(Unknown Source)
at com.diginet.oldchat.server.an.ar(Unknown Source)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at com.diginet.oldchat.server.g.j(Unknown Source)
at com.diginet.digichat.server.ChatServer.<init>(Unknown Source)
at com.diginet.digichat.server.ChatServer.main(Unknown Source)
*"VM Thread" prio=10 tid=0x02a6d000 nid=0xe38 runnable*
*"VM Periodic Task Thread" prio=10 tid=0x02a82c00 nid=0xa8 waiting on condition*
JNI global references: 814
Heap
def new generation   total 960K, used 505K [0x22990000, 0x22a90000, 0x22e70000)
eden space 896K,  49% used [0x22990000, 0x229fe4a0, 0x22a70000)
from space 64K, 100% used [0x22a80000, 0x22a90000, 0x22a90000)
to   space 64K,   0% used [0x22a70000, 0x22a70000, 0x22a80000)
tenured generation   total 4096K, used 139K [0x22e70000, 0x23270000, 0x26990000
the space 4096K,   3% used [0x22e70000, 0x22e92f88, 0x22e93000, 0x23270000)
compacting perm gen  total 12288K, used 466K [0x26990000, 0x27590000, 0x2a99000
*0)*
the space 12288K,   3% used [0x26990000, 0x26a04b00, 0x26a04c00, 0x27590000)
ro space 8192K,  63% used [0x2a990000, 0x2aea8810, 0x2aea8a00, 0x2b190000)
rw space 12288K,  53% used [0x2b190000, 0x2b7fd300, 0x2b7fd400, 0x2bd90000)
Thanks again an hope this helps.