Why MarshalException occurs

Question

hai
i have implemented Externalization interface instead of serialization for an object that i am passing it as argument. it was working well before i implement Externalization. but now i get following error.
java.rmi.MarshalException: error marshalling arguments; nested exception is:
     java.net.SocketException: Software caused connection abort: socket write error
     at sun.rmi.server.UnicastRef.invoke(Unknown Source)
     at ServerRecvT_Stub.CreateLargeFile(Unknown Source)
     at sendlargefile.run(ClientSendT.java:346)
Caused by: java.net.SocketException: Software caused connection abort: socket write error
     at java.net.SocketOutputStream.socketWrite0(Native Method)
     at java.net.SocketOutputStream.socketWrite(Unknown Source)
     at java.net.SocketOutputStream.write(Unknown Source)
     at java.io.BufferedOutputStream.flushBuffer(Unknown Source)
     at java.io.BufferedOutputStream.write(Unknown Source)
     at java.io.ObjectOutputStream$BlockDataOutputStream.drain(Unknown Source)
     at java.io.ObjectOutputStream$BlockDataOutputStream.setBlockDataMode(Unknown Source)
     at java.io.ObjectOutputStream.writeFatalException(Unknown Source)
     at java.io.ObjectOutputStream.writeObject(Unknown Source)
     at sun.rmi.server.UnicastRef.marshalValue(Unknown Source)
     ... 3 more[\b]
why does it occur
public class packet implements Externalizable
     private int count;//packet number
     private String filename;//file name
     private String sourcefile;
     private boolean end;//indicates last packet     
     private long crc;//stores crc value
     private byte data[];//actual data
     public packet(){}
     public packet(int count,String sourcefile,String filename,boolean end,long crc,byte data[])
          this.count = count;
          this.sourcefile = sourcefile;
          this.filename = filename;
          this.end = end;
          this.crc = crc;          
          this.data = new byte[data.length];
          this.data = data;
     public String getFileName()
          return filename;
     public void setFileName(String filename)
          this.filename = filename;
     public String getSourceFileName()
          return sourcefile;
     public void setData(byte data[])
          this.data = new byte[data.length];
          this.data = data;
     public byte[] getData()
          return this.data;
     public void setEnd(boolean end)
          this.end = end;          
     public boolean isEnd()
          return end;
     public long getCRC()
          return crc;
     public int getPacketId()
          return count;
     public void readExternal(ObjectInput arg0) throws IOException, ClassNotFoundException {
          count = arg0.readInt();
          filename = "" + arg0.readObject();          
          sourcefile = "" + arg0.readObject();
          end = arg0.readBoolean();
          crc = arg0.readLong();
          arg0.read(data);
     public void writeExternal(ObjectOutput arg0) throws IOException {
          arg0.writeInt(count);
          arg0.writeObject(filename);
          arg0.writeObject(sourcefile);
          arg0.writeBoolean(end);
          arg0.writeLong(crc);
          arg0.write(data);
}[\code]
plz give me solutions it's urgent
Thanks in advance                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           

Answer 1

Sorry the previous message not clear so i had send it again
i have implemented Externalization interface instead of serialization for an object that i am passing it as argument. it was working well before i implement Externalization. but now i get following error.
java.rmi.MarshalException: error marshalling arguments; nested exception is: java.net.SocketException: Software caused connection abort: socket write error at sun.rmi.server.UnicastRef.invoke(Unknown Source) at ServerRecvT_Stub.CreateLargeFile(Unknown Source) at sendlargefile.run(ClientSendT.java:346) Caused by: java.net.SocketException: Software caused connection abort: socket write error at java.net.SocketOutputStream.socketWrite0(Native Method) at java.net.SocketOutputStream.socketWrite(Unknown Source) at java.net.SocketOutputStream.write(Unknown Source) at java.io.BufferedOutputStream.flushBuffer(Unknown Source) at java.io.BufferedOutputStream.write(Unknown Source) at java.io.ObjectOutputStream$BlockDataOutputStream.drain(Unknown Source) at java.io.ObjectOutputStream$BlockDataOutputStream.setBlockDataMode(Unknown Source) at java.io.ObjectOutputStream.writeFatalException(Unknown Source) at java.io.ObjectOutputStream.writeObject(Unknown Source) at sun.rmi.server.UnicastRef.marshalValue(Unknown Source) ... 3 more
why does it occur
public class packet implements Externalizable
private int count;//packet number
private String filename;//file name
private String sourcefile;
private boolean end;//indicates last packet
private long crc;//stores crc value
private byte data[];//actual data
public packet(){}
public packet(int count,String sourcefile,String filename,boolean end,long crc,byte data[])
this.count = count;
this.sourcefile = sourcefile;
this.filename = filename;
this.end = end;
this.crc = crc;
this.data = new byte[data.length];
this.data = data;
public String getFileName()
return filename;
public void setFileName(String filename)
this.filename = filename;
public String getSourceFileName()
return sourcefile;
public void setData(byte data[])
this.data = new byte[data.length];
this.data = data;
public byte[] getData()
return this.data;
public void setEnd(boolean end)
this.end = end;
public boolean isEnd()
return end;
public long getCRC()
return crc;
public int getPacketId()
return count;
public void readExternal(ObjectInput arg0) throws IOException, ClassNotFoundException {
count = arg0.readInt();
filename = "" + arg0.readObject();
sourcefile = "" + arg0.readObject();
end = arg0.readBoolean();
crc = arg0.readLong();
arg0.read(data);
public void writeExternal(ObjectOutput arg0) throws IOException {
arg0.writeInt(count);
arg0.writeObject(filename);
arg0.writeObject(sourcefile);
arg0.writeBoolean(end);
arg0.writeLong(crc);
arg0.write(data);
}plz give me solutions it's urgent
Thanks in advance