Writer's write() method? [resolved]

[Dillinger4]

Does FileWriter's write() method inherited for the Writer
abstract class have to be in a loop to execute properly?
or can it just be called once?

If i just call the write() method once i get no output.
fw.write(buffer);

But if i use a loop i get output to a file

for(int i = 0; i <= 50; ++i){
fw.write(buffer);
}

if i flush the FileWriter say like this:

finally{
fw.flush();
fw.close();
}

i still get no output? Any suggestions?