Delete file or
directory when virtual machine terminates
import java.io.*;
public class
DeleteFileWhenVMTerminates
{
public static void
main(String[] args)
{
File file = new
File("C://FileIO//DeleteDemo.txt");
file.deleteOnExit();
}
}
Determine File or
Directory
import java.io.*;
public class
DetermineDirOrFile
{
public static void
main(String[] args)
{
File file = new
File("C://FileIO");
boolean isFile = file.isFile();
if(isFile)
System.out.println(file.getPath()
+ " is a file.");
else
System.out.println(file.getPath()
+ " is not a file.");
boolean isDirectory =
file.isDirectory();
if(isDirectory)
System.out.println(file.getPath()
+ " is a directory.");
else
System.out.println(file.getPath()
+ " is not a directory.");
}
}
Determine if File
or Directory is hidden
import java.io.*;
public class
DetermineHiddenFileOrDirectory
{
public static void
main(String[] args)
{
File file = new File("C://FileIO//HiddenDemo.txt");
boolean blnHidden =
file.isHidden();
System.out.println("Is
" + file.getPath() + " hidden ?: " + blnHidden);
}
}
Determine if a
file can be read
import java.io.*;
public class
DetermineReadFile
{
public static
void main(String[] args)
{
String filePath =
"C:/FileIO/ReadText.txt";
File file = new
File(filePath);
if(file.canRead())
{
System.out.println("File
" + file.getPath() +" can be read");
}
else
{
System.out.println("File
" + file.getPath() +" can not be read");
}
}
}
Determine if a
file can be written
import
java.io.*;
public class DetermineWriteFile
{
public static void
main(String[] args)
{
String filePath =
"C:/FileIO/ReadText.txt";
File file = new
File(filePath);
if(file.canWrite())
{
System.out.println("File
" + file.getPath() +" can be written");
}
else
{
System.out.println("File
" + file.getPath() +" can not be written");
}
}
}
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