public class BufferedInputStream
extends FilterInputStream
Constructors :
Important Methods :
class BufferedInputStreamDemo
{
public static void main(String arg[])
{
File f1 = new File("E:JavaPrograms\\FolderOne\\fileOne.txt");
//LINE A
BufferedInputStream bis = new BufferedInputStream(new FileInputStream(f1));
System.out.println("Available Bytes : " + bis.available()); //LINE B
System.out.println("MarkSuppoted : " + bis.markSupported()); //LINE C
// reading bytes from BufferedInputStream
System.out.print((char) bis.read());
System.out.print((char) bis.read());
// marking position
bis.mark(2); // LINE D
// reading bytes from BufferedInputStream
System.out.print((char) bis.read());
System.out.println((char) bis.read());
System.out.println("reset method invoked.");
bis.reset(); // LINE E
int c = 0;
while((c = bis.read()) != -1)
System.out.print((char) c);
bis.close();
}
}
OUTPUTAvailable Bytes : 12
MarkSuppoted : true
MERI
reset method invoked.
RIT CAMPUS
DESCRIPTIONAt LINE A
we created a BufferedInputStream object.
At LINE B
we checking for the available bytes. Available bytes will be zero if the file is empty.
At LINE C
we are checking whether the file is markSupported.
At LINE D
we are marking and the parameter 2 represents two positions to be remembered after mark postion.
At LINE E
we are invoking reset method which in turns resets the bytes to the mark position.
THINGS TO TRY
- Read more than two bytes before invoking reset method. The reset method will throw
IOException
. If the IOException
is not thrown the method resets the bytes to the mark position. Remember the IOException is not guaranteed.
- Comment
LINE D
and invoke reset
method to see an IOException
.
Rest Of Methods :