Checks if directory exists and readable

DirectoryChecker.java

import java.io.File;

public class DirectoryChecker
{
	public static boolean isWindows()
	{
		String os = System.getProperty("os.name").toLowerCase();
		return os.indexOf("windows") != -1;
	}
	
	public static boolean canRead(File directory)
	{
		if (!isWindows()) 
			return directory.canRead();

		File testFolder = new File(directory, "TestFolder");

		return testFolder.mkdir() && testFolder.delete();
	}
	
	public static void main(String[] args) 
	{		
		String dirName = args.length == 0 ? "." : args[0];
		File directory = new File(dirName);
		System.out.println(dirName + " exists: " + directory.exists());
		System.out.println(dirName + " is directory: " + directory.isDirectory());
		System.out.println(dirName + " can be read: " + canRead(directory));
	}
}

Compile:
javac DirectoryChecker.java

Run:
java DirectoryChecker "\\ipaddress\path\to\your\dir\"
or
java DirectoryChecker "c:\test"