write to file from stack

write to file from stack

folks. I'm trying to write to a file from a stack. The stack was created
by reading from another file. I'm using the stack so that I can reverse
the file I read in. The file names to read and write to are from the
command line. This is how I have my stack implemented:
while(read.hasNext()) {
stack.push(read.next());}
The code for my other file that the stack is supposed to write to:
FileWriter w = null;
try {
w = new FileWriter(new File(args[1]));
} catch (IOException e) {
e.printStackTrace();
}
if (!stack.isEmpty()) { //this was a while statement
try {
w.write(stack.pop());
} catch (IOException e) {
e.printStackTrace();
}
} else {
System.out.println("Didn't make it.");
}
The problem that I'm having is when I run my program, the file I want to
write to is created, but nothing gets written to the file. I originally
thought that my stack didn't have anything in it (that's why I changed my
while statement to an if; it's temporary). The "Didn't make it." didn't
print so I now know it's not that. What am I doing wrong here? Any help is
appreciated.