tryfile2.java

Java Classic Examples是我买的两本书：《JAVA经典实例》和《java入门经典源代码》里边附送光盘里带的源码

import java.io.*;                            // For input & output classes
import java.util.Date;                       // For the Date class

public class TryFile2
{
  public static void main(String[] args)
  {
    // Create an object that is a directory
    File myDir = new File("C:/jdk1.2/src/java/io");
    System.out.println(myDir.getAbsolutePath()
                 + (myDir.isDirectory()?" is ":" is not ") + "a directory");
    System.out.println("The parent of " + myDir.getName()
                         + " is " + myDir.getParent());

    // Get the contents of the directory
    File[] contents = myDir.listFiles();

    // List the contents of the directory
    if(contents!=null)
    {
      System.out.println("\nThe " + contents.length 
                  + " items in the directory " + myDir.getName() + " are:");
      for(int i = 0; i < contents.length; i++)
        System.out.println(contents[i] + " is a " +
                         (contents[i].isDirectory() ? "directory":"file") 
              + " last modified " + new Date(contents[i].lastModified()));
    }
    else
      System.out.println(myDir.getName() + " is not a directory");

    return;
  }
}