Java in a Nutshell, 5th Edition [Electronic resources]

This abstract class is the superclass of all input streams. It defines the basic input methods all input stream classes provide. read( ) reads a single byte or an array (or subarray) of bytes. It returns the bytes read, the number of bytes read, or -1 if the end-of-file has been reached. skip( ) skips a specified number of bytes of input. available( ) returns the number of bytes that can be read without blocking. close( ) closes the input stream and frees up any system resources associated with it. The stream should not be used after close( ) has been called.

If markSupported( ) returns TRue for a given InputStream, that stream supports mark( ) and reset( ) methods. mark( ) marks the current position in the input stream so that reset( ) can return to that position (as long as no more than the specified number of bytes have been read between the calls to mark( ) and reset( )). See also Reader.

public abstract class 
InputStream  implements Closeable {
// Public Constructors
public 
InputStream ( );  
// Public Instance Methods
public int 
available ( ) throws IOException;                       constant
public void 
close ( ) throws IOException;    Implements:Closeable empty
public void 
mark (int 
readlimit );                    synchronized empty
public boolean 
markSupported ( );                                  constant
public abstract int 
read ( ) throws IOException;  
public int 
read (byte[ ] 
b ) throws IOException;  
public int 
read (byte[ ] 
b , int 
off , int 
len ) throws IOException;  
public void 
reset ( ) throws IOException;                    synchronized
public long 
skip (long 
n ) throws IOException;  
// Methods Implementing Closeable
public void 
close ( ) throws IOException;                          empty
}

Subclasses

ByteArrayInputStream, FileInputStream, FilterInputStream, ObjectInputStream, PipedInputStream, SequenceInputStream, StringBufferInputStream

Passed To

Too many methods to list.

Returned By

Too many methods to list.

Type Of

FilterInputStream.in, System.in