convert image into byte

[sbs]

hi all of u ,

in my project i want to transfer an image from one moblie to another mobile using bluetooth. i have written a code but giving null pointer exception at
int length = in.read(buff);

my code is :

[code=java]
public void imageTransfer()
{
System.err.prin tln(" From image transfer ()");
String imgName = "/Sunset.png";
imgData = getImageData(im gName);
sendImageData(i mgData);

}

public byte[] getImageData(St ring imgName)
{


in = getClass().getR esourceAsStream (imgName);

buff = new byte[1024];
baos = new ByteArrayOutput Stream(1024);

try
{ System.err.prin tln(" From getImageData() try block : ");
int length = in.read(buff);
}
catch(Exception e)
{
e.printStackTra ce();
}



try
{

while(true)
{

if(length == -1)
{
break;
}

baos.write(buff ,0,length);
}
}
catch(Exception e)
{
e.printStackTra ce();
}
return baos.toByteArra y();

}

public void sendImageData(b yte[] imgData)
{

System.err.prin tln(" From sendImageData() ");
if(imgData == null)
{
return ;
}

OutputStream out = null;

try
{
System.err.prin tln(" From getImageData() try ");
out = i.openOutputStr eam();
out.write(imgDa ta);
out.flush();

}
catch(IOExcepti on e)
{
System.out.prin tln(""+e.getMes sage());
}

if (out != null)
{
try
{
out.close();
}
catch (IOException e)
{
}
}
}
[/code]

[epots9]

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**Moved from Programming Challenges

[JosAH]

hi all of u ,

in my project i want to transfer an image from one moblie to another mobile using bluetooth. i have written a code but giving null pointer exception at
int length = in.read(buff);

No need to look at the code any further: if you receive that exception on that
line of your code than 'in' equals null; no doubt about it.

kind regards,

Jos