File(文件类)

imain

//Demonstrate File.
import java.io.File;
class FileDemo{
 static void p(String s){
  System.out.println(s);
 }
 public static void main(String[] args)
 {
  File f1 = new File("c:/boot.ini");
  p("File Name: " + f1.getName());
  p("Path: " + f1.getPath());
  p("ABS Path: " + f1.getAbsolutePath());
  p(f1.exists() ? "exists":"does not exist");
  p(f1.canWrite() ? "is writeable":"is not writeable");
  p(f1.canRead() ? "is readable":"is not readable");
  p("is " + (f1.isDirectory() ? "":"not" + "a directory"));
  p(f1.isFile() ? "is normal file":"might be a named pipe");
  p(f1.isAbsolute() ? "is absolute":"is not absolute");
  p("File last modified: " + f1.lastModified());
  p("File Size: " + f1.length() + " Bytes");
 p("File Hidden: " + f1.isHidden() );
 }
}