filedir.java.bak

java课件及例程有一些PPT及一些例程

import java.io.*;
public class FileDir{
    public static void main(String args[]){
        File f1 = new File("d:\\myjava\\dir1");
        File f2 = new File(f1,"2.txt");
        String s[] = new String[10];
        int i=0;
        System.out.println(f1.isDirectory());
        System.out.println(f1.mkdirs());
        System.out.println(f1.isDirectory());
        System.out.println("f2是否存在？"+f2.exists()); 
        s = f1.list();
        System.out.println(s.length); 
        while(i<s.length){
            System.out.println(s[i++]); 
            
            
        }
              
    }
}