/*
 
* Copyright (c) 1994, 2004, Oracle and/or its affiliates. All rights reserved.
 
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 
*
 
* This code is free software; you can redistribute it and/or modify it
 
* under the terms of the GNU General Public License version 2 only, as
 
* published by the Free Software Foundation.
  
Oracle designates this
 
* particular file as subject to the "Classpath" exception as provided
 
* by Oracle in the LICENSE file that accompanied this code.
 
*
 
* This code is distributed in the hope that it will be useful, but WITHOUT
 
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 
* FITNESS FOR A PARTICULAR PURPOSE.
  
See the GNU General Public License
 
* version 2 for more details (a copy is included in the LICENSE file that
 
* accompanied this code).
 
*
 
* You should have received a copy of the GNU General Public License version
 
* 2 along with this work; if not, write to the Free Software Foundation,
 
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
 
*
 
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
 
* or visit www.oracle.com if you need additional information or have any
 
* questions.
 
*/

package java.io;

/**
 
* This abstract class is the superclass of all classes representing
 
* an output stream of bytes. An output stream accepts output bytes
 
* and sends them to some sink.
 
* <p>
 
* Applications that need to define a subclass of
 
* <code>OutputStream</code> must always provide at least a method
 
* that writes one byte of output.
 
*
 
* @author
  
Arthur van Hoff
 
* @see
     
java.io.BufferedOutputStream
 
* @see
     
java.io.ByteArrayOutputStream
 
* @see
     
java.io.DataOutputStream
 
* @see
     
java.io.FilterOutputStream
 
* @see
     
java.io.InputStream
 
* @see
     
java.io.OutputStream#write(int)
 
* @since
   
JDK1.0
 
*/

public abstract class OutputStream implements Closeable, Flushable {
    
/**
     
* Writes the specified byte to this output stream. The general
     
* contract for <code>write</code> is that one byte is written
     
* to the output stream. The byte to be written is the eight
     
* low-order bits of the argument <code>b</code>. The 24
     
* high-order bits of <code>b</code> are ignored.
     
* <p>
     
* Subclasses of <code>OutputStream</code> must provide an
     
* implementation for this method.
     
*
     
* @param
      
b
   
the <code>byte</code>.
     
* @exception
  
IOExceptionif an I/O error occurs. In particular,
     
*
             
an <code>IOException</code> may be thrown if the
     
*
             
output stream has been closed.
     
*/

    
public abstract void write(int b) throws IOException;

    
/**
     
* Writes <code>b.length</code> bytes from the specified byte array
     
* to this output stream. The general contract for <code>write(b)</code>
     
* is that it should have exactly the same effect as the call
     
* <code>write(b, 0, b.length)</code>.
     
*
     
* @param
      
b
   
the data.
     
* @exception
  
IOExceptionif an I/O error occurs.
     
* @see
        
java.io.OutputStream#write(byte[], int, int)
     
*/

    
public void write(byte b[]) throws IOException {
        
write(b, 0, b.length);
    
}

    
/**
     
* Writes <code>len</code> bytes from the specified byte array
     
* starting at offset <code>off</code> to this output stream.
     
* The general contract for <code>write(b, off, len)</code> is that
     
* some of the bytes in the array <code>b</code> are written to the
     
* output stream in order; element <code>b[off]</code> is the first
     
* byte written and <code>b[off+len-1]</code> is the last byte written
     
* by this operation.
     
* <p>
     
* The <code>write</code> method of <code>OutputStream</code> calls
     
* the write method of one argument on each of the bytes to be
     
* written out. Subclasses are encouraged to override this method and
     
* provide a more efficient implementation.
     
* <p>
     
* If <code>b</code> is <code>null</code>, a
     
* <code>NullPointerException</code> is thrown.
     
* <p>
     
* If <code>off</code> is negative, or <code>len</code> is negative, or
     
* <code>off+len</code> is greater than the length of the array
     
* <code>b</code>, then an <tt>IndexOutOfBoundsException</tt> is thrown.
     
*
     
* @param
      
bthe data.
     
* @param
      
off
   
the start offset in the data.
     
* @param
      
len
   
the number of bytes to write.
     
* @exception
  
IOExceptionif an I/O error occurs. In particular,
     
*
             
an <code>IOException</code> is thrown if the output
     
*
             
stream is closed.
     
*/

    
public void write(byte b[], int off, int len) throws IOException {
        
if (b == null) {
            
throw new NullPointerException();
        
} else if ((off < 0) || (off > b.length) || (len < 0) ||
                   
((off + len) > b.length) || ((off + len) < 0)) {
            
throw new IndexOutOfBoundsException();
        
} else if (len == 0) {
            
return;
        
}
        
for (int i = 0 ; i < len ; i++) {
            
write(b[off + i]);
        
}
    
}

    
/**
     
* Flushes this output stream and forces any buffered output bytes
     
* to be written out. The general contract of <code>flush</code> is
     
* that calling it is an indication that, if any bytes previously
     
* written have been buffered by the implementation of the output
     
* stream, such bytes should immediately be written to their
     
* intended destination.
     
* <p>
     
* If the intended destination of this stream is an abstraction provided by
     
* the underlying operating system, for example a file, then flushing the
     
* stream guarantees only that bytes previously written to the stream are
     
* passed to the operating system for writing; it does not guarantee that
     
* they are actually written to a physical device such as a disk drive.
     
* <p>
     
* The <code>flush</code> method of <code>OutputStream</code> does nothing.
     
*
     
* @exception
  
IOExceptionif an I/O error occurs.
     
*/

    
public void flush() throws IOException {
    
}

    
/**
     
* Closes this output stream and releases any system resources
     
* associated with this stream. The general contract of <code>close</code>
     
* is that it closes the output stream. A closed stream cannot perform
     
* output operations and cannot be reopened.
     
* <p>
     
* The <code>close</code> method of <code>OutputStream</code> does nothing.
     
*
     
* @exception
  
IOExceptionif an I/O error occurs.
     
*/

    
public void close() throws IOException {
    
}

}