Unhandled Exception Type IOException - Why?

[rockies1]

With the following code I get an error that prevents compiling on the line that reads:

vecReturns = fileList("C:\\");

Any idea what's up?

import java.io.*;
import java.util.*;//For the vectors

public class Test
{
	public static Vector fileList(String directoryName) throws IOException
	{
		Vector vecReturns = new Vector();
		File dir = new File(directoryName);
		if(dir.exists() && dir.isDirectory())
		{
			File [] list = dir.listFiles();
			for (int i = 0;i<list.length;i++)
			{
				if(list[i].isFile())
				{
					StringBuffer name = new StringBuffer(list[i].toString());
					StringBuffer result = new StringBuffer(name.length());
					for(int x = 0;x<name.length();x++)
					{
						if(name.charAt(x)=='\\')
						{
							result.append("\\\\");
						}
						else
						{
							result.append(name.charAt(x));
						}
					}
					//vecReturns.add(result.tostring());
					vecReturns.add(result);
					System.out.println(result);
				}
			}
			return vecReturns;
		}
		else
		{
			throw new IOException(directoryName + " is not a directory.");
		}
	}//End fileList
	
	public static void main(String[] args)
	{
		Vector vecReturns = new Vector();
		vecReturns = fileList("C:\\");
		
	}//End main
	
}//End Test