exam101.java

java例子

import java.io.File;
import java.util.*;
public class Exam101{
public static void main(String[] args){
String fileName=args[0];
File f=new File(fileName);
if(!f.exists())
{System.out.println("can not find"+fileName);
 System.exit(0);}
 System.out.println("filename: "+fileName);
 System.out.println("length: "+f.length()+" bytes long.");
 long d=f.lastModified();
 //Date s=new Date(d);
 //System.out.println("modified time: "+s.toString());
 System.out.println("modified time: "+new Date(d));
 System.out.println("path: "+f.getAbsolutePath());
 System.out.println("can read? "+f.canRead());
 System.out.println("can write? "+f.canWrite());}}