file_ex.java

刘艺编著的java教程的课本习题加例题代码 很有用哦！

import java.io.*;
import java.util.*;
public class File_ex{ 
  void FileInformation(File f){
   System.out.println(f.getName());
   System.out.println(f.getAbsolutePath());
   System.out.println(f.getParent());
   System.out.println(f.length());
   System.out.println(new Date(f.lastModified()));
  }
  void DirectoryInformation(File d){
   System.out.println(d.getName());
   System.out.println(d.getParent());
   String lt[]=new String[10];
   int i=0;
   lt=d.list();
   while(i<lt.length){
    System.out.println(lt[i]);
    i++;
   }
  }
  public static void main(String args[]){
   File f=new File("d:\\datafile","file1.txt");
   File d=new File("d:\\data2");
   File d1=new File("d:\\data2\\data3");
   File_ex fe=new File_ex();
   fe.FileInformation(f);
   fe.DirectoryInformation(d);
   d1.mkdir();
 
 }
}