InputStream

InputStream

java.io

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Java 1.0

closeable

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 .

Figure 9-25. java.io.InputStream

 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