Hello,
I am a complete beginner at Java and I'm having a problem with something I don't understand at all.
I'm trying to complete some homework in which I need to finnish off writing a small program which reads a text file and checks brackets in the file. Basically, it creates a stack, reads some file, and whenever it encounters an opening bracket "{", "(" or "[" it pushes it to the stack. Whenever it encounters a closing bracket it checks the top of the stack to see whether the opening bracket on top matches the closing bracket.
Whilst I believe I have the code to do that working, I'm getting an error each time I attempt to run it:
Error, args.length == 0
I guess the teacher was expecting this to happen as he wrote a piece of code in the main method to display it:
public class BracketChecker
{
public static void main (String[] args)
{
if (args.length == 0) {
System.out.println("Error, args.length == 0");
}
// use System.out to display an error message
else
{
BracketCheck bc = new BracketCheck(args[0]);
System.out.println (bc.check());
}
} // end main
} // end classI won't put the whole code for the actual bracket checking as it's rather long (although if you need to see it I will).
So would anyone be able to help me out? I have a basic idea of what "args" is but I'm not sure how to fix this. I suspect it has something to do with needing to provide a file for it to read but I'm not sure, again, I'm a total beginner.
Sorry for the lengthy question, but I've been trying to figure it out for hours now.
Thanks in advance.