import java.io.*;
class TestFilesNum {
public static void main(String[] args){
int count = 0 ;
File f = new File("c:\\javatemp");
if (f.isFile()){
System.out.println("This is a file not a dir");
}else{
File[] ff = f.listFiles();
System.out.println("The dir's files is " + ff.length);
}