/*
* SetterFileAttribute.java
*
* Created on 2006年8月22日, 下午3:51
*
* 测试和设置文件属性
*/
package study.iostudy;
import java.io.*;
public class SetterFileAttribute
{
/*
* File类中提供的有关文件属性测试方面的方法有以下几种：
* boolean exists(); 测试当前文件对象指示的文件是否存在。
* boolean isFile(); 测试当前文件对象是不是文件。
* boolean isDirectory(); 测试当前文件对象是不是目录。
* boolean canRead(); 测试当前文件对象是否可读。
* boolean canWrite(); 测试当前文件对象是否可写。
* boolean setReadOnly(); 将当前文件对象设置为只读。
* long length(); 获得当前文件对象的长度。
*/
public static void main
(String[] args
) {
File fileObject
= new File("d:\\mydir\\firstFile.txt"); try
{
dirObject.mkdir();
fileObject.createNewFile();
{
e.printStackTrace();
}
System.
out.
println("* * * * * * * * * * * * * * * * * * * * * * * * "); System.
out.
println("there are some information about property of file object:"); System.
out.
println("file object : " + fileObject
); System.
out.
println("file exist? " + fileObject.
exists()); System.
out.
println("Is a file? " + fileObject.
isFile()); System.
out.
println("Is a directory?" + fileObject.
isDirectory()); System.
out.
println("Can read this file? " + fileObject.
canRead()); System.
out.
println("Can write this fie? " + fileObject.
canWrite()); long fileLen = fileObject.length();
System.
out.
println("file length: " +fileLen
); boolean fileRead = fileObject.setReadOnly();
System.
out.
println("Can read this file? " + fileObject.
canRead()); System.
out.
println("Can write this fie? " + fileObject.
canWrite()); System.
out.
println("* * * * * * * * * * * * * * * * * * * * * * * * "); }
}