getting Null Pointer Exception......
Hi...i am uploading a file as FormFile (using Struts...)object and converting it to BufferedReader by using getInputStream() on file and casting InputStreamReader to BufferedReader. I now pass this BufferedReader object (say o1)to a function which reades the file header. Then i pass this object o1, to another function to read whole file.
In this process, i get Null pointer exception....... not able to find out WHY ? when the same object o1 worked for 1st function.Is this to do something with Struts?
Please advise.
[540 byte] By [
Mayank_03a] at [2007-11-27 11:17:19]
Impossible to tell without code, please post the relevant one.
And please, do use code tags, see:
http://forum.java.sun.com/help.jspa?sec=formatting
dwga at 2007-7-29 14:24:14 >
This is what I am trying to dopublic void Start(BufferedReader fileReader)throws Exception{
tempCol=rc.HeaderCols(templateReader);
HeaderCols() makes a new BufferedReader object and logic works fine..
BufferedReader in=new BufferedReader(reader);
String [][] csvHeader = new String [5][200];
String strHeader = in.readLine();
I Again pass the BufferedReader fileReader argument of Start() to another method where I makes a new BufferedReader object and it gives Null PointerException.
public HashMap readFile(BufferedReader reader1) throws IOException{
BufferedReader inData=new BufferedReader(reader1);
String str;
Tokenize mt=new Tokenize();
while ((str = inData.readLine()) != null) {
.. logic goes here
What on earth makes you think we can work out what your problem is from that? You're the lucky one, you've got a stack trace in front of you. Interpet that, or if you can't, post it here. But don't just say "it doesn't work" and expect help. We're not mind readers!
